5 Changes between 1.0.2 and 1.0.2a [xx XXX xxxx]
9 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
13 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
14 sends a carefully crafted handshake message, to cause OpenSSL to fail
15 to free up to 64k of memory causing a memory leak. This could be
16 exploited in a Denial Of Service attack. This issue affects OpenSSL
17 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
18 whether SRTP is used or configured. Implementations of OpenSSL that
19 have been compiled with OPENSSL_NO_SRTP defined are not affected.
21 The fix was developed by the OpenSSL team.
25 *) Session Ticket Memory Leak.
27 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
28 integrity of that ticket is first verified. In the event of a session
29 ticket integrity check failing, OpenSSL will fail to free memory
30 causing a memory leak. By sending a large number of invalid session
31 tickets an attacker could exploit this issue in a Denial Of Service
36 *) Build option no-ssl3 is incomplete.
38 When OpenSSL is configured with "no-ssl3" as a build option, servers
39 could accept and complete a SSL 3.0 handshake, and clients could be
40 configured to send them.
42 [Akamai and the OpenSSL team]
44 *) Add support for TLS_FALLBACK_SCSV.
45 Client applications doing fallback retries should call
46 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
48 [Adam Langley, Bodo Moeller]
50 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
51 ARMv5 through ARMv8, as opposite to "locking" it to single one.
52 So far those who have to target multiple plaforms would compromise
53 and argue that binary targeting say ARMv5 would still execute on
54 ARMv8. "Universal" build resolves this compromise by providing
55 near-optimal performance even on newer platforms.
58 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
59 (other platforms pending).
60 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
62 *) Add support for the SignedCertificateTimestampList certificate and
63 OCSP response extensions from RFC6962.
66 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
67 for corner cases. (Certain input points at infinity could lead to
68 bogus results, with non-infinity inputs mapped to infinity too.)
71 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
72 This covers AES, SHA256/512 and GHASH. "Initial" means that most
73 common cases are optimized and there still is room for further
74 improvements. Vector Permutation AES for Altivec is also added.
77 *) Add support for little-endian ppc64 Linux target.
80 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
81 SHA1, SHA256 and GHASH. "Initial" means that most common cases
82 are optimized and there still is room for further improvements.
83 Both 32- and 64-bit modes are supported.
84 [Andy Polyakov, Ard Biesheuvel (Linaro)]
86 *) Improved ARMv7 NEON support.
89 *) Support for SPARC Architecture 2011 crypto extensions, first
90 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
91 SHA256/512, MD5, GHASH and modular exponentiation.
92 [Andy Polyakov, David Miller]
94 *) Accelerated modular exponentiation for Intel processors, a.k.a.
96 [Shay Gueron & Vlad Krasnov (Intel Corp)]
98 *) Support for new and upcoming Intel processors, including AVX2,
99 BMI and SHA ISA extensions. This includes additional "stitched"
100 implementations, AESNI-SHA256 and GCM, and multi-buffer support
103 This work was sponsored by Intel Corp.
106 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
107 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
108 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
111 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
112 this fixes a limiation in previous versions of OpenSSL.
115 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
116 MGF1 digest and OAEP label.
119 *) Add EVP support for key wrapping algorithms, to avoid problems with
120 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
121 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
122 algorithms and include tests cases.
125 *) Add functions to allocate and set the fields of an ECDSA_METHOD
127 [Douglas E. Engert, Steve Henson]
129 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
130 difference in days and seconds between two tm or ASN1_TIME structures.
133 *) Add -rev test option to s_server to just reverse order of characters
134 received by client and send back to server. Also prints an abbreviated
135 summary of the connection parameters.
138 *) New option -brief for s_client and s_server to print out a brief summary
139 of connection parameters.
142 *) Add callbacks for arbitrary TLS extensions.
143 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
145 *) New option -crl_download in several openssl utilities to download CRLs
146 from CRLDP extension in certificates.
149 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
152 *) New function X509_CRL_diff to generate a delta CRL from the difference
153 of two full CRLs. Add support to "crl" utility.
156 *) New functions to set lookup_crls function and to retrieve
157 X509_STORE from X509_STORE_CTX.
160 *) Print out deprecated issuer and subject unique ID fields in
164 *) Extend OCSP I/O functions so they can be used for simple general purpose
165 HTTP as well as OCSP. New wrapper function which can be used to download
166 CRLs using the OCSP API.
169 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
172 *) SSL_CONF* functions. These provide a common framework for application
173 configuration using configuration files or command lines.
176 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
177 message callback and prints the results. Needs compile time option
178 "enable-ssl-trace". New options to s_client and s_server to enable
182 *) New ctrl and macro to retrieve supported points extensions.
183 Print out extension in s_server and s_client.
186 *) New functions to retrieve certificate signature and signature
190 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
194 *) New Suite B modes for TLS code. These use and enforce the requirements
195 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
196 only use Suite B curves. The Suite B modes can be set by using the
197 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
200 *) New chain verification flags for Suite B levels of security. Check
201 algorithms are acceptable when flags are set in X509_verify_cert.
204 *) Make tls1_check_chain return a set of flags indicating checks passed
205 by a certificate chain. Add additional tests to handle client
206 certificates: checks for matching certificate type and issuer name
210 *) If an attempt is made to use a signature algorithm not in the peer
211 preference list abort the handshake. If client has no suitable
212 signature algorithms in response to a certificate request do not
216 *) If server EC tmp key is not in client preference list abort handshake.
219 *) Add support for certificate stores in CERT structure. This makes it
220 possible to have different stores per SSL structure or one store in
221 the parent SSL_CTX. Include distint stores for certificate chain
222 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
223 to build and store a certificate chain in CERT structure: returing
224 an error if the chain cannot be built: this will allow applications
225 to test if a chain is correctly configured.
227 Note: if the CERT based stores are not set then the parent SSL_CTX
228 store is used to retain compatibility with existing behaviour.
232 *) New function ssl_set_client_disabled to set a ciphersuite disabled
233 mask based on the current session, check mask when sending client
234 hello and checking the requested ciphersuite.
237 *) New ctrls to retrieve and set certificate types in a certificate
238 request message. Print out received values in s_client. If certificate
239 types is not set with custom values set sensible values based on
240 supported signature algorithms.
243 *) Support for distinct client and server supported signature algorithms.
246 *) Add certificate callback. If set this is called whenever a certificate
247 is required by client or server. An application can decide which
248 certificate chain to present based on arbitrary criteria: for example
249 supported signature algorithms. Add very simple example to s_server.
250 This fixes many of the problems and restrictions of the existing client
251 certificate callback: for example you can now clear an existing
252 certificate and specify the whole chain.
255 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
256 the certificate can be used for (if anything). Set valid_flags field
257 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
258 to have similar checks in it.
260 Add new "cert_flags" field to CERT structure and include a "strict mode".
261 This enforces some TLS certificate requirements (such as only permitting
262 certificate signature algorithms contained in the supported algorithms
263 extension) which some implementations ignore: this option should be used
264 with caution as it could cause interoperability issues.
267 *) Update and tidy signature algorithm extension processing. Work out
268 shared signature algorithms based on preferences and peer algorithms
269 and print them out in s_client and s_server. Abort handshake if no
270 shared signature algorithms.
273 *) Add new functions to allow customised supported signature algorithms
274 for SSL and SSL_CTX structures. Add options to s_client and s_server
278 *) New function SSL_certs_clear() to delete all references to certificates
279 from an SSL structure. Before this once a certificate had been added
280 it couldn't be removed.
283 *) Integrate hostname, email address and IP address checking with certificate
284 verification. New verify options supporting checking in opensl utility.
287 *) Fixes and wildcard matching support to hostname and email checking
288 functions. Add manual page.
289 [Florian Weimer (Red Hat Product Security Team)]
291 *) New functions to check a hostname email or IP address against a
292 certificate. Add options x509 utility to print results of checks against
296 *) Fix OCSP checking.
297 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
299 *) Initial experimental support for explicitly trusted non-root CAs.
300 OpenSSL still tries to build a complete chain to a root but if an
301 intermediate CA has a trust setting included that is used. The first
302 setting is used: whether to trust (e.g., -addtrust option to the x509
306 *) Add -trusted_first option which attempts to find certificates in the
307 trusted store even if an untrusted chain is also supplied.
310 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
311 platform support for Linux and Android.
314 *) Support for linux-x32, ILP32 environment in x86_64 framework.
317 *) Experimental multi-implementation support for FIPS capable OpenSSL.
318 When in FIPS mode the approved implementations are used as normal,
319 when not in FIPS mode the internal unapproved versions are used instead.
320 This means that the FIPS capable OpenSSL isn't forced to use the
321 (often lower perfomance) FIPS implementations outside FIPS mode.
324 *) Transparently support X9.42 DH parameters when calling
325 PEM_read_bio_DHparameters. This means existing applications can handle
326 the new parameter format automatically.
329 *) Initial experimental support for X9.42 DH parameter format: mainly
330 to support use of 'q' parameter for RFC5114 parameters.
333 *) Add DH parameters from RFC5114 including test data to dhtest.
336 *) Support for automatic EC temporary key parameter selection. If enabled
337 the most preferred EC parameters are automatically used instead of
338 hardcoded fixed parameters. Now a server just has to call:
339 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
340 support ECDH and use the most appropriate parameters.
343 *) Enhance and tidy EC curve and point format TLS extension code. Use
344 static structures instead of allocation if default values are used.
345 New ctrls to set curves we wish to support and to retrieve shared curves.
346 Print out shared curves in s_server. New options to s_server and s_client
347 to set list of supported curves.
350 *) New ctrls to retrieve supported signature algorithms and
351 supported curve values as an array of NIDs. Extend openssl utility
352 to print out received values.
355 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
356 between NIDs and the more common NIST names such as "P-256". Enhance
357 ecparam utility and ECC method to recognise the NIST names for curves.
360 *) Enhance SSL/TLS certificate chain handling to support different
361 chains for each certificate instead of one chain in the parent SSL_CTX.
364 *) Support for fixed DH ciphersuite client authentication: where both
365 server and client use DH certificates with common parameters.
368 *) Support for fixed DH ciphersuites: those requiring DH server
372 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
374 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
375 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
376 X509_CINF_get_signature were reverted post internal team review.
378 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
380 *) Build fixes for the Windows and OpenVMS platforms
381 [Matt Caswell and Richard Levitte]
383 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
385 *) Abort handshake if server key exchange message is omitted for ephemeral
388 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
389 reporting this issue.
393 *) Remove non-export ephemeral RSA code on client and server. This code
394 violated the TLS standard by allowing the use of temporary RSA keys in
395 non-export ciphersuites and could be used by a server to effectively
396 downgrade the RSA key length used to a value smaller than the server
397 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
398 INRIA or reporting this issue.
402 *) Ensure that the session ID context of an SSL is updated when its
403 SSL_CTX is updated via SSL_set_SSL_CTX.
405 The session ID context is typically set from the parent SSL_CTX,
406 and can vary with the CTX.
409 *) Fix various certificate fingerprint issues.
411 By using non-DER or invalid encodings outside the signed portion of a
412 certificate the fingerprint can be changed without breaking the signature.
413 Although no details of the signed portion of the certificate can be changed
414 this can cause problems with some applications: e.g. those using the
415 certificate fingerprint for blacklists.
417 1. Reject signatures with non zero unused bits.
419 If the BIT STRING containing the signature has non zero unused bits reject
420 the signature. All current signature algorithms require zero unused bits.
422 2. Check certificate algorithm consistency.
424 Check the AlgorithmIdentifier inside TBS matches the one in the
425 certificate signature. NB: this will result in signature failure
426 errors for some broken certificates.
428 Thanks to Konrad Kraszewski from Google for reporting this issue.
430 3. Check DSA/ECDSA signatures use DER.
432 Reencode DSA/ECDSA signatures and compare with the original received
433 signature. Return an error if there is a mismatch.
435 This will reject various cases including garbage after signature
436 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
437 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
438 (negative or with leading zeroes).
440 Further analysis was conducted and fixes were developed by Stephen Henson
441 of the OpenSSL core team.
446 *) Do not resume sessions on the server if the negotiated protocol
447 version does not match the session's version. Resuming with a different
448 version, while not strictly forbidden by the RFC, is of questionable
449 sanity and breaks all known clients.
450 [David Benjamin, Emilia Käsper]
452 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
453 early CCS messages during renegotiation. (Note that because
454 renegotiation is encrypted, this early CCS was not exploitable.)
457 *) Tighten client-side session ticket handling during renegotiation:
458 ensure that the client only accepts a session ticket if the server sends
459 the extension anew in the ServerHello. Previously, a TLS client would
460 reuse the old extension state and thus accept a session ticket if one was
461 announced in the initial ServerHello.
463 Similarly, ensure that the client requires a session ticket if one
464 was advertised in the ServerHello. Previously, a TLS client would
465 ignore a missing NewSessionTicket message.
468 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
472 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
473 sends a carefully crafted handshake message, to cause OpenSSL to fail
474 to free up to 64k of memory causing a memory leak. This could be
475 exploited in a Denial Of Service attack. This issue affects OpenSSL
476 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
477 whether SRTP is used or configured. Implementations of OpenSSL that
478 have been compiled with OPENSSL_NO_SRTP defined are not affected.
480 The fix was developed by the OpenSSL team.
484 *) Session Ticket Memory Leak.
486 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
487 integrity of that ticket is first verified. In the event of a session
488 ticket integrity check failing, OpenSSL will fail to free memory
489 causing a memory leak. By sending a large number of invalid session
490 tickets an attacker could exploit this issue in a Denial Of Service
495 *) Build option no-ssl3 is incomplete.
497 When OpenSSL is configured with "no-ssl3" as a build option, servers
498 could accept and complete a SSL 3.0 handshake, and clients could be
499 configured to send them.
501 [Akamai and the OpenSSL team]
503 *) Add support for TLS_FALLBACK_SCSV.
504 Client applications doing fallback retries should call
505 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
507 [Adam Langley, Bodo Moeller]
509 *) Add additional DigestInfo checks.
511 Reencode DigestInto in DER and check against the original when
512 verifying RSA signature: this will reject any improperly encoded
513 DigestInfo structures.
515 Note: this is a precautionary measure and no attacks are currently known.
519 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
521 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
522 SRP code can be overrun an internal buffer. Add sanity check that
523 g, A, B < N to SRP code.
525 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
526 Group for discovering this issue.
530 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
531 TLS 1.0 instead of higher protocol versions when the ClientHello message
532 is badly fragmented. This allows a man-in-the-middle attacker to force a
533 downgrade to TLS 1.0 even if both the server and the client support a
534 higher protocol version, by modifying the client's TLS records.
536 Thanks to David Benjamin and Adam Langley (Google) for discovering and
537 researching this issue.
541 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
542 to a denial of service attack. A malicious server can crash the client
543 with a null pointer dereference (read) by specifying an anonymous (EC)DH
544 ciphersuite and sending carefully crafted handshake messages.
546 Thanks to Felix Gröbert (Google) for discovering and researching this
551 *) By sending carefully crafted DTLS packets an attacker could cause openssl
552 to leak memory. This can be exploited through a Denial of Service attack.
553 Thanks to Adam Langley for discovering and researching this issue.
557 *) An attacker can force openssl to consume large amounts of memory whilst
558 processing DTLS handshake messages. This can be exploited through a
559 Denial of Service attack.
560 Thanks to Adam Langley for discovering and researching this issue.
564 *) An attacker can force an error condition which causes openssl to crash
565 whilst processing DTLS packets due to memory being freed twice. This
566 can be exploited through a Denial of Service attack.
567 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
572 *) If a multithreaded client connects to a malicious server using a resumed
573 session and the server sends an ec point format extension it could write
574 up to 255 bytes to freed memory.
576 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
581 *) A malicious server can crash an OpenSSL client with a null pointer
582 dereference (read) by specifying an SRP ciphersuite even though it was not
583 properly negotiated with the client. This can be exploited through a
584 Denial of Service attack.
586 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
587 discovering and researching this issue.
591 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
592 X509_name_oneline, X509_name_print_ex et al. to leak some information
593 from the stack. Applications may be affected if they echo pretty printing
594 output to the attacker.
596 Thanks to Ivan Fratric (Google) for discovering this issue.
598 [Emilia Käsper, and Steve Henson]
600 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
601 for corner cases. (Certain input points at infinity could lead to
602 bogus results, with non-infinity inputs mapped to infinity too.)
605 Changes between 1.0.1i and 1.0.1j [xx XXX xxxx]
607 *) Add additional DigestInfo checks.
609 Reencode DigestInto in DER and check against the original when
610 verifying RSA signature: this will reject any improperly encoded
611 DigestInfo structures.
613 Note: this is a precautionary measure and no attacks are currently known.
617 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
619 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
620 handshake can force the use of weak keying material in OpenSSL
621 SSL/TLS clients and servers.
623 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
624 researching this issue. (CVE-2014-0224)
625 [KIKUCHI Masashi, Steve Henson]
627 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
628 OpenSSL DTLS client the code can be made to recurse eventually crashing
631 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
633 [Imre Rad, Steve Henson]
635 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
636 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
637 client or server. This is potentially exploitable to run arbitrary
638 code on a vulnerable client or server.
640 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
641 [Jüri Aedla, Steve Henson]
643 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
644 are subject to a denial of service attack.
646 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
647 this issue. (CVE-2014-3470)
648 [Felix Gröbert, Ivan Fratric, Steve Henson]
650 *) Harmonize version and its documentation. -f flag is used to display
652 [mancha <mancha1@zoho.com>]
654 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
656 [mancha <mancha1@zoho.com>]
658 *) Fix some double frees. These are not thought to be exploitable.
659 [mancha <mancha1@zoho.com>]
661 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
663 *) A missing bounds check in the handling of the TLS heartbeat extension
664 can be used to reveal up to 64k of memory to a connected client or
667 Thanks for Neel Mehta of Google Security for discovering this bug and to
668 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
669 preparing the fix (CVE-2014-0160)
670 [Adam Langley, Bodo Moeller]
672 *) Fix for the attack described in the paper "Recovering OpenSSL
673 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
674 by Yuval Yarom and Naomi Benger. Details can be obtained from:
675 http://eprint.iacr.org/2014/140
677 Thanks to Yuval Yarom and Naomi Benger for discovering this
678 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
679 [Yuval Yarom and Naomi Benger]
681 *) TLS pad extension: draft-agl-tls-padding-03
683 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
684 TLS client Hello record length value would otherwise be > 255 and
685 less that 512 pad with a dummy extension containing zeroes so it
686 is at least 512 bytes long.
688 [Adam Langley, Steve Henson]
690 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
692 *) Fix for TLS record tampering bug. A carefully crafted invalid
693 handshake could crash OpenSSL with a NULL pointer exception.
694 Thanks to Anton Johansson for reporting this issues.
697 *) Keep original DTLS digest and encryption contexts in retransmission
698 structures so we can use the previous session parameters if they need
699 to be resent. (CVE-2013-6450)
702 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
703 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
704 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
705 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
706 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
707 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
708 [Rob Stradling, Adam Langley]
710 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
712 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
713 supporting platforms or when small records were transferred.
714 [Andy Polyakov, Steve Henson]
716 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
718 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
720 This addresses the flaw in CBC record processing discovered by
721 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
722 at: http://www.isg.rhul.ac.uk/tls/
724 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
725 Security Group at Royal Holloway, University of London
726 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
727 Emilia Käsper for the initial patch.
729 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
731 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
732 ciphersuites which can be exploited in a denial of service attack.
733 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
734 and detecting this bug and to Wolfgang Ettlinger
735 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
739 *) Return an error when checking OCSP signatures when key is NULL.
740 This fixes a DoS attack. (CVE-2013-0166)
743 *) Make openssl verify return errors.
744 [Chris Palmer <palmer@google.com> and Ben Laurie]
746 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
747 the right response is stapled. Also change SSL_get_certificate()
748 so it returns the certificate actually sent.
749 See http://rt.openssl.org/Ticket/Display.html?id=2836.
750 [Rob Stradling <rob.stradling@comodo.com>]
752 *) Fix possible deadlock when decoding public keys.
755 *) Don't use TLS 1.0 record version number in initial client hello
759 Changes between 1.0.1b and 1.0.1c [10 May 2012]
761 *) Sanity check record length before skipping explicit IV in TLS
762 1.2, 1.1 and DTLS to fix DoS attack.
764 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
765 fuzzing as a service testing platform.
769 *) Initialise tkeylen properly when encrypting CMS messages.
770 Thanks to Solar Designer of Openwall for reporting this issue.
773 *) In FIPS mode don't try to use composite ciphers as they are not
777 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
779 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
780 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
781 mean any application compiled against OpenSSL 1.0.0 headers setting
782 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
783 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
784 0x10000000L Any application which was previously compiled against
785 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
786 will need to be recompiled as a result. Letting be results in
787 inability to disable specifically TLS 1.1 and in client context,
788 in unlike event, limit maximum offered version to TLS 1.0 [see below].
791 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
792 disable just protocol X, but all protocols above X *if* there are
793 protocols *below* X still enabled. In more practical terms it means
794 that if application wants to disable TLS1.0 in favor of TLS1.1 and
795 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
796 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
800 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
802 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
803 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
804 in CRYPTO_realloc_clean.
806 Thanks to Tavis Ormandy, Google Security Team, for discovering this
807 issue and to Adam Langley <agl@chromium.org> for fixing it.
809 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
811 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
814 *) Workarounds for some broken servers that "hang" if a client hello
815 record length exceeds 255 bytes.
817 1. Do not use record version number > TLS 1.0 in initial client
818 hello: some (but not all) hanging servers will now work.
819 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
820 the number of ciphers sent in the client hello. This should be
821 set to an even number, such as 50, for example by passing:
822 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
823 Most broken servers should now work.
824 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
825 TLS 1.2 client support entirely.
828 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
831 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
833 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
834 STRING form instead of a DigestInfo.
837 *) The format used for MDC2 RSA signatures is inconsistent between EVP
838 and the RSA_sign/RSA_verify functions. This was made more apparent when
839 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
840 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
841 the correct format in RSA_verify so both forms transparently work.
844 *) Some servers which support TLS 1.0 can choke if we initially indicate
845 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
846 encrypted premaster secret. As a workaround use the maximum pemitted
847 client version in client hello, this should keep such servers happy
848 and still work with previous versions of OpenSSL.
851 *) Add support for TLS/DTLS heartbeats.
852 [Robin Seggelmann <seggelmann@fh-muenster.de>]
854 *) Add support for SCTP.
855 [Robin Seggelmann <seggelmann@fh-muenster.de>]
857 *) Improved PRNG seeding for VOS.
858 [Paul Green <Paul.Green@stratus.com>]
860 *) Extensive assembler packs updates, most notably:
862 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
863 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
864 - x86_64: bit-sliced AES implementation;
865 - ARM: NEON support, contemporary platforms optimizations;
866 - s390x: z196 support;
867 - *: GHASH and GF(2^m) multiplication implementations;
871 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
872 (removal of unnecessary code)
873 [Peter Sylvester <peter.sylvester@edelweb.fr>]
875 *) Add TLS key material exporter from RFC 5705.
878 *) Add DTLS-SRTP negotiation from RFC 5764.
881 *) Add Next Protocol Negotiation,
882 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
883 disabled with a no-npn flag to config or Configure. Code donated
885 [Adam Langley <agl@google.com> and Ben Laurie]
887 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
888 NIST-P256, NIST-P521, with constant-time single point multiplication on
889 typical inputs. Compiler support for the nonstandard type __uint128_t is
890 required to use this (present in gcc 4.4 and later, for 64-bit builds).
891 Code made available under Apache License version 2.0.
893 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
894 line to include this in your build of OpenSSL, and run "make depend" (or
895 "make update"). This enables the following EC_METHODs:
897 EC_GFp_nistp224_method()
898 EC_GFp_nistp256_method()
899 EC_GFp_nistp521_method()
901 EC_GROUP_new_by_curve_name() will automatically use these (while
902 EC_GROUP_new_curve_GFp() currently prefers the more flexible
904 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
906 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
907 all platforms. Move ssize_t definition from e_os.h to the public
908 header file e_os2.h as it now appears in public header file cms.h
911 *) New -sigopt option to the ca, req and x509 utilities. Additional
912 signature parameters can be passed using this option and in
916 *) Add RSA PSS signing function. This will generate and set the
917 appropriate AlgorithmIdentifiers for PSS based on those in the
918 corresponding EVP_MD_CTX structure. No application support yet.
921 *) Support for companion algorithm specific ASN1 signing routines.
922 New function ASN1_item_sign_ctx() signs a pre-initialised
923 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
924 the appropriate parameters.
927 *) Add new algorithm specific ASN1 verification initialisation function
928 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
929 handling will be the same no matter what EVP_PKEY_METHOD is used.
930 Add a PSS handler to support verification of PSS signatures: checked
931 against a number of sample certificates.
934 *) Add signature printing for PSS. Add PSS OIDs.
935 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
937 *) Add algorithm specific signature printing. An individual ASN1 method
938 can now print out signatures instead of the standard hex dump.
940 More complex signatures (e.g. PSS) can print out more meaningful
941 information. Include DSA version that prints out the signature
945 *) Password based recipient info support for CMS library: implementing
949 *) Split password based encryption into PBES2 and PBKDF2 functions. This
950 neatly separates the code into cipher and PBE sections and is required
951 for some algorithms that split PBES2 into separate pieces (such as
955 *) Session-handling fixes:
956 - Fix handling of connections that are resuming with a session ID,
957 but also support Session Tickets.
958 - Fix a bug that suppressed issuing of a new ticket if the client
959 presented a ticket with an expired session.
960 - Try to set the ticket lifetime hint to something reasonable.
961 - Make tickets shorter by excluding irrelevant information.
962 - On the client side, don't ignore renewed tickets.
963 [Adam Langley, Bodo Moeller (Google)]
965 *) Fix PSK session representation.
968 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
970 This work was sponsored by Intel.
973 *) Add GCM support to TLS library. Some custom code is needed to split
974 the IV between the fixed (from PRF) and explicit (from TLS record)
975 portions. This adds all GCM ciphersuites supported by RFC5288 and
976 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
977 add a special AESGCM string for GCM only.
980 *) Expand range of ctrls for AES GCM. Permit setting invocation
981 field on decrypt and retrieval of invocation field only on encrypt.
984 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
985 As required by RFC5289 these ciphersuites cannot be used if for
986 versions of TLS earlier than 1.2.
989 *) For FIPS capable OpenSSL interpret a NULL default public key method
990 as unset and return the appopriate default but do *not* set the default.
991 This means we can return the appopriate method in applications that
992 swicth between FIPS and non-FIPS modes.
995 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
996 ENGINE is used then we cannot handle that in the FIPS module so we
997 keep original code iff non-FIPS operations are allowed.
1000 *) Add -attime option to openssl utilities.
1001 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
1003 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
1006 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
1007 FIPS EC methods unconditionally for now.
1010 *) New build option no-ec2m to disable characteristic 2 code.
1013 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
1014 all cases can be covered as some introduce binary incompatibilities.
1017 *) Redirect RSA operations to FIPS module including keygen,
1018 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
1021 *) Add similar low level API blocking to ciphers.
1024 *) Low level digest APIs are not approved in FIPS mode: any attempt
1025 to use these will cause a fatal error. Applications that *really* want
1026 to use them can use the private_* version instead.
1029 *) Redirect cipher operations to FIPS module for FIPS builds.
1032 *) Redirect digest operations to FIPS module for FIPS builds.
1035 *) Update build system to add "fips" flag which will link in fipscanister.o
1036 for static and shared library builds embedding a signature if needed.
1039 *) Output TLS supported curves in preference order instead of numerical
1040 order. This is currently hardcoded for the highest order curves first.
1041 This should be configurable so applications can judge speed vs strength.
1044 *) Add TLS v1.2 server support for client authentication.
1047 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
1051 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
1052 FIPS modules versions.
1055 *) Add TLS v1.2 client side support for client authentication. Keep cache
1056 of handshake records longer as we don't know the hash algorithm to use
1057 until after the certificate request message is received.
1060 *) Initial TLS v1.2 client support. Add a default signature algorithms
1061 extension including all the algorithms we support. Parse new signature
1062 format in client key exchange. Relax some ECC signing restrictions for
1063 TLS v1.2 as indicated in RFC5246.
1066 *) Add server support for TLS v1.2 signature algorithms extension. Switch
1067 to new signature format when needed using client digest preference.
1068 All server ciphersuites should now work correctly in TLS v1.2. No client
1069 support yet and no support for client certificates.
1072 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
1073 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
1074 ciphersuites. At present only RSA key exchange ciphersuites work with
1075 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
1076 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
1077 and version checking.
1080 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
1081 with this defined it will not be affected by any changes to ssl internal
1082 structures. Add several utility functions to allow openssl application
1083 to work with OPENSSL_NO_SSL_INTERN defined.
1087 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
1089 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
1092 *) Permit abbreviated handshakes when renegotiating using the function
1093 SSL_renegotiate_abbreviated().
1094 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1096 *) Add call to ENGINE_register_all_complete() to
1097 ENGINE_load_builtin_engines(), so some implementations get used
1098 automatically instead of needing explicit application support.
1101 *) Add support for TLS key exporter as described in RFC5705.
1102 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
1104 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
1105 a few changes are required:
1107 Add SSL_OP_NO_TLSv1_1 flag.
1108 Add TLSv1_1 methods.
1109 Update version checking logic to handle version 1.1.
1110 Add explicit IV handling (ported from DTLS code).
1111 Add command line options to s_client/s_server.
1114 Changes between 1.0.0j and 1.0.0k [5 Feb 2013]
1116 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
1118 This addresses the flaw in CBC record processing discovered by
1119 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
1120 at: http://www.isg.rhul.ac.uk/tls/
1122 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1123 Security Group at Royal Holloway, University of London
1124 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
1125 Emilia Käsper for the initial patch.
1127 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
1129 *) Return an error when checking OCSP signatures when key is NULL.
1130 This fixes a DoS attack. (CVE-2013-0166)
1133 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
1134 the right response is stapled. Also change SSL_get_certificate()
1135 so it returns the certificate actually sent.
1136 See http://rt.openssl.org/Ticket/Display.html?id=2836.
1137 (This is a backport)
1138 [Rob Stradling <rob.stradling@comodo.com>]
1140 *) Fix possible deadlock when decoding public keys.
1143 Changes between 1.0.0i and 1.0.0j [10 May 2012]
1145 [NB: OpenSSL 1.0.0i and later 1.0.0 patch levels were released after
1148 *) Sanity check record length before skipping explicit IV in DTLS
1151 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
1152 fuzzing as a service testing platform.
1156 *) Initialise tkeylen properly when encrypting CMS messages.
1157 Thanks to Solar Designer of Openwall for reporting this issue.
1160 Changes between 1.0.0h and 1.0.0i [19 Apr 2012]
1162 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
1163 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
1164 in CRYPTO_realloc_clean.
1166 Thanks to Tavis Ormandy, Google Security Team, for discovering this
1167 issue and to Adam Langley <agl@chromium.org> for fixing it.
1169 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
1171 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
1173 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
1174 in CMS and PKCS7 code. When RSA decryption fails use a random key for
1175 content decryption and always return the same error. Note: this attack
1176 needs on average 2^20 messages so it only affects automated senders. The
1177 old behaviour can be reenabled in the CMS code by setting the
1178 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
1179 an MMA defence is not necessary.
1180 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
1181 this issue. (CVE-2012-0884)
1184 *) Fix CVE-2011-4619: make sure we really are receiving a
1185 client hello before rejecting multiple SGC restarts. Thanks to
1186 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
1189 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
1191 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1192 Thanks to Antonio Martin, Enterprise Secure Access Research and
1193 Development, Cisco Systems, Inc. for discovering this bug and
1194 preparing a fix. (CVE-2012-0050)
1197 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
1199 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1200 of the Vaudenay padding oracle attack on CBC mode encryption
1201 which enables an efficient plaintext recovery attack against
1202 the OpenSSL implementation of DTLS. Their attack exploits timing
1203 differences arising during decryption processing. A research
1204 paper describing this attack can be found at:
1205 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1206 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1207 Security Group at Royal Holloway, University of London
1208 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1209 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1210 for preparing the fix. (CVE-2011-4108)
1211 [Robin Seggelmann, Michael Tuexen]
1213 *) Clear bytes used for block padding of SSL 3.0 records.
1215 [Adam Langley (Google)]
1217 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1218 Kadianakis <desnacked@gmail.com> for discovering this issue and
1219 Adam Langley for preparing the fix. (CVE-2011-4619)
1220 [Adam Langley (Google)]
1222 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
1223 [Andrey Kulikov <amdeich@gmail.com>]
1225 *) Prevent malformed RFC3779 data triggering an assertion failure.
1226 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1227 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1228 [Rob Austein <sra@hactrn.net>]
1230 *) Improved PRNG seeding for VOS.
1231 [Paul Green <Paul.Green@stratus.com>]
1233 *) Fix ssl_ciph.c set-up race.
1234 [Adam Langley (Google)]
1236 *) Fix spurious failures in ecdsatest.c.
1237 [Emilia Käsper (Google)]
1239 *) Fix the BIO_f_buffer() implementation (which was mixing different
1240 interpretations of the '..._len' fields).
1241 [Adam Langley (Google)]
1243 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1244 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1245 threads won't reuse the same blinding coefficients.
1247 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1248 lock to call BN_BLINDING_invert_ex, and avoids one use of
1249 BN_BLINDING_update for each BN_BLINDING structure (previously,
1250 the last update always remained unused).
1251 [Emilia Käsper (Google)]
1253 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
1254 [Bob Buckholz (Google)]
1256 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
1258 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
1259 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
1260 [Kaspar Brand <ossl@velox.ch>]
1262 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1263 for multi-threaded use of ECDH. (CVE-2011-3210)
1264 [Adam Langley (Google)]
1266 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1269 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
1270 signature public key algorithm by using OID xref utilities instead.
1271 Before this you could only use some ECC ciphersuites with SHA1 only.
1274 *) Add protection against ECDSA timing attacks as mentioned in the paper
1275 by Billy Bob Brumley and Nicola Tuveri, see:
1277 http://eprint.iacr.org/2011/232.pdf
1279 [Billy Bob Brumley and Nicola Tuveri]
1281 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
1283 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1284 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1286 *) Fix bug in string printing code: if *any* escaping is enabled we must
1287 escape the escape character (backslash) or the resulting string is
1291 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
1293 *) Disable code workaround for ancient and obsolete Netscape browsers
1294 and servers: an attacker can use it in a ciphersuite downgrade attack.
1295 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1298 *) Fixed J-PAKE implementation error, originally discovered by
1299 Sebastien Martini, further info and confirmation from Stefan
1300 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1303 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
1305 *) Fix extension code to avoid race conditions which can result in a buffer
1306 overrun vulnerability: resumed sessions must not be modified as they can
1307 be shared by multiple threads. CVE-2010-3864
1310 *) Fix WIN32 build system to correctly link an ENGINE directory into
1314 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
1316 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
1318 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
1320 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
1322 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
1323 context. The operation can be customised via the ctrl mechanism in
1324 case ENGINEs want to include additional functionality.
1327 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
1330 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
1331 output hashes compatible with older versions of OpenSSL.
1332 [Willy Weisz <weisz@vcpc.univie.ac.at>]
1334 *) Fix compression algorithm handling: if resuming a session use the
1335 compression algorithm of the resumed session instead of determining
1336 it from client hello again. Don't allow server to change algorithm.
1339 *) Add load_crls() function to apps tidying load_certs() too. Add option
1340 to verify utility to allow additional CRLs to be included.
1343 *) Update OCSP request code to permit adding custom headers to the request:
1344 some responders need this.
1347 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
1349 [Julia Lawall <julia@diku.dk>]
1351 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
1352 needlessly dereferenced structures, used obsolete functions and
1353 didn't handle all updated verify codes correctly.
1356 *) Disable MD2 in the default configuration.
1359 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
1360 indicate the initial BIO being pushed or popped. This makes it possible
1361 to determine whether the BIO is the one explicitly called or as a result
1362 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
1363 it handles reference counts correctly and doesn't zero out the I/O bio
1364 when it is not being explicitly popped. WARNING: applications which
1365 included workarounds for the old buggy behaviour will need to be modified
1366 or they could free up already freed BIOs.
1369 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
1370 renaming to all platforms (within the 0.9.8 branch, this was
1371 done conditionally on Netware platforms to avoid a name clash).
1372 [Guenter <lists@gknw.net>]
1374 *) Add ECDHE and PSK support to DTLS.
1375 [Michael Tuexen <tuexen@fh-muenster.de>]
1377 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
1381 *) Add "missing" function EVP_MD_flags() (without this the only way to
1382 retrieve a digest flags is by accessing the structure directly. Update
1383 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
1384 or cipher is registered as in the "from" argument. Print out all
1385 registered digests in the dgst usage message instead of manually
1386 attempting to work them out.
1389 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
1390 this allows the use of compression and extensions. Change default cipher
1391 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
1392 by default unless an application cipher string requests it.
1395 *) Alter match criteria in PKCS12_parse(). It used to try to use local
1396 key ids to find matching certificates and keys but some PKCS#12 files
1397 don't follow the (somewhat unwritten) rules and this strategy fails.
1398 Now just gather all certificates together and the first private key
1399 then look for the first certificate that matches the key.
1402 *) Support use of registered digest and cipher names for dgst and cipher
1403 commands instead of having to add each one as a special case. So now
1410 openssl dgst -sha256 foo
1412 and this works for ENGINE based algorithms too.
1416 *) Update Gost ENGINE to support parameter files.
1417 [Victor B. Wagner <vitus@cryptocom.ru>]
1419 *) Support GeneralizedTime in ca utility.
1420 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
1422 *) Enhance the hash format used for certificate directory links. The new
1423 form uses the canonical encoding (meaning equivalent names will work
1424 even if they aren't identical) and uses SHA1 instead of MD5. This form
1425 is incompatible with the older format and as a result c_rehash should
1426 be used to rebuild symbolic links.
1429 *) Make PKCS#8 the default write format for private keys, replacing the
1430 traditional format. This form is standardised, more secure and doesn't
1431 include an implicit MD5 dependency.
1434 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
1435 committed to OpenSSL should pass this lot as a minimum.
1438 *) Add session ticket override functionality for use by EAP-FAST.
1439 [Jouni Malinen <j@w1.fi>]
1441 *) Modify HMAC functions to return a value. Since these can be implemented
1442 in an ENGINE errors can occur.
1445 *) Type-checked OBJ_bsearch_ex.
1448 *) Type-checked OBJ_bsearch. Also some constification necessitated
1449 by type-checking. Still to come: TXT_DB, bsearch(?),
1450 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
1454 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
1455 seconds to a tm structure directly, instead of going through OS
1456 specific date routines. This avoids any issues with OS routines such
1457 as the year 2038 bug. New *_adj() functions for ASN1 time structures
1458 and X509_time_adj_ex() to cover the extended range. The existing
1459 X509_time_adj() is still usable and will no longer have any date issues.
1462 *) Delta CRL support. New use deltas option which will attempt to locate
1463 and search any appropriate delta CRLs available.
1465 This work was sponsored by Google.
1468 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
1469 code and add additional score elements. Validate alternate CRL paths
1470 as part of the CRL checking and indicate a new error "CRL path validation
1471 error" in this case. Applications wanting additional details can use
1472 the verify callback and check the new "parent" field. If this is not
1473 NULL CRL path validation is taking place. Existing applications wont
1474 see this because it requires extended CRL support which is off by
1477 This work was sponsored by Google.
1480 *) Support for freshest CRL extension.
1482 This work was sponsored by Google.
1485 *) Initial indirect CRL support. Currently only supported in the CRLs
1486 passed directly and not via lookup. Process certificate issuer
1487 CRL entry extension and lookup CRL entries by bother issuer name
1488 and serial number. Check and process CRL issuer entry in IDP extension.
1490 This work was sponsored by Google.
1493 *) Add support for distinct certificate and CRL paths. The CRL issuer
1494 certificate is validated separately in this case. Only enabled if
1495 an extended CRL support flag is set: this flag will enable additional
1496 CRL functionality in future.
1498 This work was sponsored by Google.
1501 *) Add support for policy mappings extension.
1503 This work was sponsored by Google.
1506 *) Fixes to pathlength constraint, self issued certificate handling,
1507 policy processing to align with RFC3280 and PKITS tests.
1509 This work was sponsored by Google.
1512 *) Support for name constraints certificate extension. DN, email, DNS
1513 and URI types are currently supported.
1515 This work was sponsored by Google.
1518 *) To cater for systems that provide a pointer-based thread ID rather
1519 than numeric, deprecate the current numeric thread ID mechanism and
1520 replace it with a structure and associated callback type. This
1521 mechanism allows a numeric "hash" to be extracted from a thread ID in
1522 either case, and on platforms where pointers are larger than 'long',
1523 mixing is done to help ensure the numeric 'hash' is usable even if it
1524 can't be guaranteed unique. The default mechanism is to use "&errno"
1525 as a pointer-based thread ID to distinguish between threads.
1527 Applications that want to provide their own thread IDs should now use
1528 CRYPTO_THREADID_set_callback() to register a callback that will call
1529 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
1531 Note that ERR_remove_state() is now deprecated, because it is tied
1532 to the assumption that thread IDs are numeric. ERR_remove_state(0)
1533 to free the current thread's error state should be replaced by
1534 ERR_remove_thread_state(NULL).
1536 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
1537 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
1538 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
1539 application was previously providing a numeric thread callback that
1540 was inappropriate for distinguishing threads, then uniqueness might
1541 have been obtained with &errno that happened immediately in the
1542 intermediate development versions of OpenSSL; this is no longer the
1543 case, the numeric thread callback will now override the automatic use
1545 [Geoff Thorpe, with help from Bodo Moeller]
1547 *) Initial support for different CRL issuing certificates. This covers a
1548 simple case where the self issued certificates in the chain exist and
1549 the real CRL issuer is higher in the existing chain.
1551 This work was sponsored by Google.
1554 *) Removed effectively defunct crypto/store from the build.
1557 *) Revamp of STACK to provide stronger type-checking. Still to come:
1558 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
1559 ASN1_STRING, CONF_VALUE.
1562 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
1563 RAM on SSL connections. This option can save about 34k per idle SSL.
1566 *) Revamp of LHASH to provide stronger type-checking. Still to come:
1567 STACK, TXT_DB, bsearch, qsort.
1570 *) Initial support for Cryptographic Message Syntax (aka CMS) based
1571 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
1572 support for data, signedData, compressedData, digestedData and
1573 encryptedData, envelopedData types included. Scripts to check against
1574 RFC4134 examples draft and interop and consistency checks of many
1575 content types and variants.
1578 *) Add options to enc utility to support use of zlib compression BIO.
1581 *) Extend mk1mf to support importing of options and assembly language
1582 files from Configure script, currently only included in VC-WIN32.
1583 The assembly language rules can now optionally generate the source
1584 files from the associated perl scripts.
1587 *) Implement remaining functionality needed to support GOST ciphersuites.
1588 Interop testing has been performed using CryptoPro implementations.
1589 [Victor B. Wagner <vitus@cryptocom.ru>]
1591 *) s390x assembler pack.
1594 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
1598 *) Implement Opaque PRF Input TLS extension as specified in
1599 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
1600 official specification yet and no extension type assignment by
1601 IANA exists, this extension (for now) will have to be explicitly
1602 enabled when building OpenSSL by providing the extension number
1603 to use. For example, specify an option
1605 -DTLSEXT_TYPE_opaque_prf_input=0x9527
1607 to the "config" or "Configure" script to enable the extension,
1608 assuming extension number 0x9527 (which is a completely arbitrary
1609 and unofficial assignment based on the MD5 hash of the Internet
1610 Draft). Note that by doing so, you potentially lose
1611 interoperability with other TLS implementations since these might
1612 be using the same extension number for other purposes.
1614 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
1615 opaque PRF input value to use in the handshake. This will create
1616 an interal copy of the length-'len' string at 'src', and will
1617 return non-zero for success.
1619 To get more control and flexibility, provide a callback function
1622 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
1623 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
1627 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
1630 Callback function 'cb' will be called in handshakes, and is
1631 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
1632 Argument 'arg' is for application purposes (the value as given to
1633 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
1634 be provided to the callback function). The callback function
1635 has to return non-zero to report success: usually 1 to use opaque
1636 PRF input just if possible, or 2 to enforce use of the opaque PRF
1637 input. In the latter case, the library will abort the handshake
1638 if opaque PRF input is not successfully negotiated.
1640 Arguments 'peerinput' and 'len' given to the callback function
1641 will always be NULL and 0 in the case of a client. A server will
1642 see the client's opaque PRF input through these variables if
1643 available (NULL and 0 otherwise). Note that if the server
1644 provides an opaque PRF input, the length must be the same as the
1645 length of the client's opaque PRF input.
1647 Note that the callback function will only be called when creating
1648 a new session (session resumption can resume whatever was
1649 previously negotiated), and will not be called in SSL 2.0
1650 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
1651 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
1652 for applications that need to enforce opaque PRF input.
1656 *) Update ssl code to support digests other than SHA1+MD5 for handshake
1659 [Victor B. Wagner <vitus@cryptocom.ru>]
1661 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1662 RFC4507bis. The encrypted ticket format is an encrypted encoded
1663 SSL_SESSION structure, that way new session features are automatically
1666 If a client application caches session in an SSL_SESSION structure
1667 support is transparent because tickets are now stored in the encoded
1670 The SSL_CTX structure automatically generates keys for ticket
1671 protection in servers so again support should be possible
1672 with no application modification.
1674 If a client or server wishes to disable RFC4507 support then the option
1675 SSL_OP_NO_TICKET can be set.
1677 Add a TLS extension debugging callback to allow the contents of any client
1678 or server extensions to be examined.
1680 This work was sponsored by Google.
1683 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
1684 OpenSSL should now compile cleanly on gcc 4.2
1685 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
1687 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
1688 support including streaming MAC support: this is required for GOST
1689 ciphersuite support.
1690 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
1692 *) Add option -stream to use PKCS#7 streaming in smime utility. New
1693 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1694 to output in BER and PEM format.
1697 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1698 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1699 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1700 ENGINE support for HMAC keys which are unextractable. New -mac and
1701 -macopt options to dgst utility.
1704 *) New option -sigopt to dgst utility. Update dgst to use
1705 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1706 alternative signing paramaters such as X9.31 or PSS in the dgst
1710 *) Change ssl_cipher_apply_rule(), the internal function that does
1711 the work each time a ciphersuite string requests enabling
1712 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1713 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1714 the order of disabled ciphersuites such that those ciphersuites
1715 that most recently went from enabled to disabled not only stay
1716 in order with respect to each other, but also have higher priority
1717 than other disabled ciphersuites the next time ciphersuites are
1720 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1721 the same ciphersuites as with "HIGH" alone, but in a specific
1722 order where the PSK ciphersuites come first (since they are the
1723 most recently disabled ciphersuites when "HIGH" is parsed).
1725 Also, change ssl_create_cipher_list() (using this new
1726 funcionality) such that between otherwise identical
1727 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1731 *) Change ssl_create_cipher_list() so that it automatically
1732 arranges the ciphersuites in reasonable order before starting
1733 to process the rule string. Thus, the definition for "DEFAULT"
1734 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1735 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1736 This makes it much easier to arrive at a reasonable default order
1737 in applications for which anonymous ciphers are OK (meaning
1738 that you can't actually use DEFAULT).
1739 [Bodo Moeller; suggested by Victor Duchovni]
1741 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1742 processing) into multiple integers instead of setting
1743 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1744 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1745 (These masks as well as the individual bit definitions are hidden
1746 away into the non-exported interface ssl/ssl_locl.h, so this
1747 change to the definition of the SSL_CIPHER structure shouldn't
1748 affect applications.) This give us more bits for each of these
1749 categories, so there is no longer a need to coagulate AES128 and
1750 AES256 into a single algorithm bit, and to coagulate Camellia128
1751 and Camellia256 into a single algorithm bit, which has led to all
1754 Thus, among other things, the kludge introduced in 0.9.7m and
1755 0.9.8e for masking out AES256 independently of AES128 or masking
1756 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1758 With the change, we also introduce new ciphersuite aliases that
1759 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1763 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1764 Use the leftmost N bytes of the signature input if the input is
1765 larger than the prime q (with N being the size in bytes of q).
1768 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1769 it yet and it is largely untested.
1772 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1775 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1776 some compilers (gcc 4.2 and later) reject their use. Safestack is
1777 reimplemented. Update ASN1 to avoid use of legacy functions.
1780 *) Win32/64 targets are linked with Winsock2.
1783 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1784 to external functions. This can be used to increase CRL handling
1785 efficiency especially when CRLs are very large by (for example) storing
1786 the CRL revoked certificates in a database.
1789 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1790 new CRLs added to a directory can be used. New command line option
1791 -verify_return_error to s_client and s_server. This causes real errors
1792 to be returned by the verify callback instead of carrying on no matter
1793 what. This reflects the way a "real world" verify callback would behave.
1796 *) GOST engine, supporting several GOST algorithms and public key formats.
1797 Kindly donated by Cryptocom.
1800 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1801 partitioned by DP are handled but no indirect CRL or reason partitioning
1802 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1803 selected via a scoring technique which handles IDP and AKID in CRLs.
1806 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1807 will ultimately be used for all verify operations: this will remove the
1808 X509_STORE dependency on certificate verification and allow alternative
1809 lookup methods. X509_STORE based implementations of these two callbacks.
1812 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1813 Modify get_crl() to find a valid (unexpired) CRL if possible.
1816 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1817 this would be called X509_CRL_cmp() but that name is already used by
1818 a function that just compares CRL issuer names. Cache several CRL
1819 extensions in X509_CRL structure and cache CRLDP in X509.
1822 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1823 this maps equivalent X509_NAME structures into a consistent structure.
1824 Name comparison can then be performed rapidly using memcmp().
1827 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1831 *) Allow digests to supply their own micalg string for S/MIME type using
1832 the ctrl EVP_MD_CTRL_MICALG.
1835 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1836 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1837 ctrl. It can then customise the structure before and/or after signing
1841 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1842 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1843 to free up any added signature OIDs.
1846 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1847 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1848 digest and cipher tables. New options added to openssl utility:
1849 list-message-digest-algorithms and list-cipher-algorithms.
1852 *) Change the array representation of binary polynomials: the list
1853 of degrees of non-zero coefficients is now terminated with -1.
1854 Previously it was terminated with 0, which was also part of the
1855 value; thus, the array representation was not applicable to
1856 polynomials where t^0 has coefficient zero. This change makes
1857 the array representation useful in a more general context.
1860 *) Various modifications and fixes to SSL/TLS cipher string
1861 handling. For ECC, the code now distinguishes between fixed ECDH
1862 with RSA certificates on the one hand and with ECDSA certificates
1863 on the other hand, since these are separate ciphersuites. The
1864 unused code for Fortezza ciphersuites has been removed.
1866 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1867 (not "ECDHE"). For consistency with the code for DH
1868 certificates, use of ECDH certificates is now considered ECDH
1869 authentication, not RSA or ECDSA authentication (the latter is
1870 merely the CA's signing algorithm and not actively used in the
1873 The temporary ciphersuite alias "ECCdraft" is no longer
1874 available, and ECC ciphersuites are no longer excluded from "ALL"
1875 and "DEFAULT". The following aliases now exist for RFC 4492
1876 ciphersuites, most of these by analogy with the DH case:
1878 kECDHr - ECDH cert, signed with RSA
1879 kECDHe - ECDH cert, signed with ECDSA
1880 kECDH - ECDH cert (signed with either RSA or ECDSA)
1881 kEECDH - ephemeral ECDH
1882 ECDH - ECDH cert or ephemeral ECDH
1888 AECDH - anonymous ECDH
1889 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1893 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1894 Use correct micalg parameters depending on digest(s) in signed message.
1897 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1898 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1901 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1902 an engine to register a method. Add ENGINE lookups for methods and
1903 functional reference processing.
1906 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1907 EVP_{Sign,Verify}* which allow an application to customise the signature
1911 *) New -resign option to smime utility. This adds one or more signers
1912 to an existing PKCS#7 signedData structure. Also -md option to use an
1913 alternative message digest algorithm for signing.
1916 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1917 create PKCS7 structures containing multiple signers. Update smime
1918 application to support multiple signers.
1921 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1925 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1926 Reorganize PBE internals to lookup from a static table using NIDs,
1927 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1928 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1929 PRF which will be automatically used with PBES2.
1932 *) Replace the algorithm specific calls to generate keys in "req" with the
1936 *) Update PKCS#7 enveloped data routines to use new API. This is now
1937 supported by any public key method supporting the encrypt operation. A
1938 ctrl is added to allow the public key algorithm to examine or modify
1939 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1943 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1944 a default digest type to use. In most cases this will be SHA1 but some
1945 algorithms (such as GOST) need to specify an alternative digest. The
1946 return value indicates how strong the prefernce is 1 means optional and
1947 2 is mandatory (that is it is the only supported type). Modify
1948 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1949 use the default md. Update openssl utilities to use the default digest
1950 type for signing if it is not explicitly indicated.
1953 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1954 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1955 signing method from the key type. This effectively removes the link
1956 between digests and public key types.
1959 *) Add an OID cross reference table and utility functions. Its purpose is to
1960 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1961 rsaEncryption. This will allow some of the algorithm specific hackery
1962 needed to use the correct OID to be removed.
1965 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1966 structures for PKCS7_sign(). They are now set up by the relevant public
1970 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1973 *) Add support for key derivation (agreement) in the API, DH method and
1977 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1978 public and private key formats. As a side effect these add additional
1979 command line functionality not previously available: DSA signatures can be
1980 generated and verified using pkeyutl and DH key support and generation in
1985 [Oliver Tappe <zooey@hirschkaefer.de>]
1987 *) New make target "install_html_docs" installs HTML renditions of the
1989 [Oliver Tappe <zooey@hirschkaefer.de>]
1991 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1992 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1993 support key and parameter generation and add initial key generation
1994 functionality for RSA.
1997 *) Add functions for main EVP_PKEY_method operations. The undocumented
1998 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1999 EVP_PKEY_{encrypt,decrypt}_old.
2002 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
2003 key API, doesn't do much yet.
2006 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
2007 public key algorithms. New option to openssl utility:
2008 "list-public-key-algorithms" to print out info.
2011 *) Implement the Supported Elliptic Curves Extension for
2012 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2015 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
2016 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
2019 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
2020 utilities such as rsa, dsa, dsaparam etc except they process any key
2024 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
2025 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
2026 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
2030 *) Initial support for pluggable public key ASN1.
2031 De-spaghettify the public key ASN1 handling. Move public and private
2032 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
2033 algorithm specific handling to a single module within the relevant
2034 algorithm directory. Add functions to allow (near) opaque processing
2035 of public and private key structures.
2038 *) Implement the Supported Point Formats Extension for
2039 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2042 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
2043 for the psk identity [hint] and the psk callback functions to the
2044 SSL_SESSION, SSL and SSL_CTX structure.
2047 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
2051 SSL_CTX_use_psk_identity_hint
2052 SSL_get_psk_identity_hint
2053 SSL_get_psk_identity
2054 SSL_use_psk_identity_hint
2056 [Mika Kousa and Pasi Eronen of Nokia Corporation]
2058 *) Add RFC 3161 compliant time stamp request creation, response generation
2059 and response verification functionality.
2060 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
2062 *) Add initial support for TLS extensions, specifically for the server_name
2063 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2064 have new members for a host name. The SSL data structure has an
2065 additional member SSL_CTX *initial_ctx so that new sessions can be
2066 stored in that context to allow for session resumption, even after the
2067 SSL has been switched to a new SSL_CTX in reaction to a client's
2068 server_name extension.
2070 New functions (subject to change):
2072 SSL_get_servername()
2073 SSL_get_servername_type()
2076 New CTRL codes and macros (subject to change):
2078 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2079 - SSL_CTX_set_tlsext_servername_callback()
2080 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2081 - SSL_CTX_set_tlsext_servername_arg()
2082 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2084 openssl s_client has a new '-servername ...' option.
2086 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2087 '-key2 ...', '-servername_fatal' (subject to change). This allows
2088 testing the HostName extension for a specific single host name ('-cert'
2089 and '-key' remain fallbacks for handshakes without HostName
2090 negotiation). If the unrecogninzed_name alert has to be sent, this by
2091 default is a warning; it becomes fatal with the '-servername_fatal'
2094 [Peter Sylvester, Remy Allais, Christophe Renou]
2096 *) Whirlpool hash implementation is added.
2099 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
2100 bn(64,32). Because of instruction set limitations it doesn't have
2101 any negative impact on performance. This was done mostly in order
2102 to make it possible to share assembler modules, such as bn_mul_mont
2103 implementations, between 32- and 64-bit builds without hassle.
2106 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
2107 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
2111 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
2112 dedicated Montgomery multiplication procedure, is introduced.
2113 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
2114 "64-bit" performance on certain 32-bit targets.
2117 *) New option SSL_OP_NO_COMP to disable use of compression selectively
2118 in SSL structures. New SSL ctrl to set maximum send fragment size.
2119 Save memory by seeting the I/O buffer sizes dynamically instead of
2120 using the maximum available value.
2123 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
2124 in addition to the text details.
2127 *) Very, very preliminary EXPERIMENTAL support for printing of general
2128 ASN1 structures. This currently produces rather ugly output and doesn't
2129 handle several customised structures at all.
2132 *) Integrated support for PVK file format and some related formats such
2133 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
2134 these in the 'rsa' and 'dsa' utilities.
2137 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
2140 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
2141 place for the (very old) "NETSCAPE" format certificates which are now
2142 handled using new ASN1 code equivalents.
2145 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
2146 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
2147 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
2150 *) Modify CRL distribution points extension code to print out previously
2151 unsupported fields. Enhance extension setting code to allow setting of
2155 *) Add print and set support for Issuing Distribution Point CRL extension.
2158 *) Change 'Configure' script to enable Camellia by default.
2161 Changes between 0.9.8x and 0.9.8y [5 Feb 2013]
2163 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
2165 This addresses the flaw in CBC record processing discovered by
2166 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
2167 at: http://www.isg.rhul.ac.uk/tls/
2169 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2170 Security Group at Royal Holloway, University of London
2171 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
2172 Emilia Käsper for the initial patch.
2174 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
2176 *) Return an error when checking OCSP signatures when key is NULL.
2177 This fixes a DoS attack. (CVE-2013-0166)
2180 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
2181 the right response is stapled. Also change SSL_get_certificate()
2182 so it returns the certificate actually sent.
2183 See http://rt.openssl.org/Ticket/Display.html?id=2836.
2184 (This is a backport)
2185 [Rob Stradling <rob.stradling@comodo.com>]
2187 *) Fix possible deadlock when decoding public keys.
2190 Changes between 0.9.8w and 0.9.8x [10 May 2012]
2192 *) Sanity check record length before skipping explicit IV in DTLS
2195 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
2196 fuzzing as a service testing platform.
2200 *) Initialise tkeylen properly when encrypting CMS messages.
2201 Thanks to Solar Designer of Openwall for reporting this issue.
2204 Changes between 0.9.8v and 0.9.8w [23 Apr 2012]
2206 *) The fix for CVE-2012-2110 did not take into account that the
2207 'len' argument to BUF_MEM_grow and BUF_MEM_grow_clean is an
2208 int in OpenSSL 0.9.8, making it still vulnerable. Fix by
2209 rejecting negative len parameter. (CVE-2012-2131)
2210 [Tomas Hoger <thoger@redhat.com>]
2212 Changes between 0.9.8u and 0.9.8v [19 Apr 2012]
2214 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
2215 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
2216 in CRYPTO_realloc_clean.
2218 Thanks to Tavis Ormandy, Google Security Team, for discovering this
2219 issue and to Adam Langley <agl@chromium.org> for fixing it.
2221 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
2223 Changes between 0.9.8t and 0.9.8u [12 Mar 2012]
2225 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
2226 in CMS and PKCS7 code. When RSA decryption fails use a random key for
2227 content decryption and always return the same error. Note: this attack
2228 needs on average 2^20 messages so it only affects automated senders. The
2229 old behaviour can be reenabled in the CMS code by setting the
2230 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
2231 an MMA defence is not necessary.
2232 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
2233 this issue. (CVE-2012-0884)
2236 *) Fix CVE-2011-4619: make sure we really are receiving a
2237 client hello before rejecting multiple SGC restarts. Thanks to
2238 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
2241 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
2243 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
2244 Thanks to Antonio Martin, Enterprise Secure Access Research and
2245 Development, Cisco Systems, Inc. for discovering this bug and
2246 preparing a fix. (CVE-2012-0050)
2249 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
2251 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
2252 of the Vaudenay padding oracle attack on CBC mode encryption
2253 which enables an efficient plaintext recovery attack against
2254 the OpenSSL implementation of DTLS. Their attack exploits timing
2255 differences arising during decryption processing. A research
2256 paper describing this attack can be found at:
2257 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
2258 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2259 Security Group at Royal Holloway, University of London
2260 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
2261 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
2262 for preparing the fix. (CVE-2011-4108)
2263 [Robin Seggelmann, Michael Tuexen]
2265 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
2266 [Ben Laurie, Kasper <ekasper@google.com>]
2268 *) Clear bytes used for block padding of SSL 3.0 records.
2270 [Adam Langley (Google)]
2272 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
2273 Kadianakis <desnacked@gmail.com> for discovering this issue and
2274 Adam Langley for preparing the fix. (CVE-2011-4619)
2275 [Adam Langley (Google)]
2277 *) Prevent malformed RFC3779 data triggering an assertion failure.
2278 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
2279 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
2280 [Rob Austein <sra@hactrn.net>]
2282 *) Fix ssl_ciph.c set-up race.
2283 [Adam Langley (Google)]
2285 *) Fix spurious failures in ecdsatest.c.
2286 [Emilia Käsper (Google)]
2288 *) Fix the BIO_f_buffer() implementation (which was mixing different
2289 interpretations of the '..._len' fields).
2290 [Adam Langley (Google)]
2292 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
2293 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
2294 threads won't reuse the same blinding coefficients.
2296 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
2297 lock to call BN_BLINDING_invert_ex, and avoids one use of
2298 BN_BLINDING_update for each BN_BLINDING structure (previously,
2299 the last update always remained unused).
2300 [Emilia Käsper (Google)]
2302 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
2303 for multi-threaded use of ECDH.
2304 [Adam Langley (Google)]
2306 *) Fix x509_name_ex_d2i memory leak on bad inputs.
2309 *) Add protection against ECDSA timing attacks as mentioned in the paper
2310 by Billy Bob Brumley and Nicola Tuveri, see:
2312 http://eprint.iacr.org/2011/232.pdf
2314 [Billy Bob Brumley and Nicola Tuveri]
2316 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
2318 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
2319 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
2321 *) Fix bug in string printing code: if *any* escaping is enabled we must
2322 escape the escape character (backslash) or the resulting string is
2326 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
2328 *) Disable code workaround for ancient and obsolete Netscape browsers
2329 and servers: an attacker can use it in a ciphersuite downgrade attack.
2330 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
2333 *) Fixed J-PAKE implementation error, originally discovered by
2334 Sebastien Martini, further info and confirmation from Stefan
2335 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
2338 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
2340 *) Fix extension code to avoid race conditions which can result in a buffer
2341 overrun vulnerability: resumed sessions must not be modified as they can
2342 be shared by multiple threads. CVE-2010-3864
2345 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
2348 *) Don't reencode certificate when calculating signature: cache and use
2349 the original encoding instead. This makes signature verification of
2350 some broken encodings work correctly.
2353 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
2354 is also one of the inputs.
2355 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
2357 *) Don't repeatedly append PBE algorithms to table if they already exist.
2358 Sort table on each new add. This effectively makes the table read only
2359 after all algorithms are added and subsequent calls to PKCS12_pbe_add
2363 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
2365 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
2368 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
2369 access or freeing data twice (CVE-2010-0742)
2370 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
2372 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
2373 common in certificates and some applications which only call
2374 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
2378 Reduce copying into .apps and .test in makevms.com
2379 Don't try to use blank CA certificate in CA.com
2380 Allow use of C files from original directories in maketests.com
2381 [Steven M. Schweda" <sms@antinode.info>]
2383 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
2385 *) When rejecting SSL/TLS records due to an incorrect version number, never
2386 update s->server with a new major version number. As of
2387 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
2388 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
2389 the previous behavior could result in a read attempt at NULL when
2390 receiving specific incorrect SSL/TLS records once record payload
2391 protection is active. (CVE-2010-0740)
2392 [Bodo Moeller, Adam Langley <agl@chromium.org>]
2394 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
2395 could be crashed if the relevant tables were not present (e.g. chrooted).
2396 [Tomas Hoger <thoger@redhat.com>]
2398 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
2400 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
2401 [Martin Olsson, Neel Mehta]
2403 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
2404 accommodate for stack sorting, always a write lock!).
2407 *) On some versions of WIN32 Heap32Next is very slow. This can cause
2408 excessive delays in the RAND_poll(): over a minute. As a workaround
2409 include a time check in the inner Heap32Next loop too.
2412 *) The code that handled flushing of data in SSL/TLS originally used the
2413 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
2414 the problem outlined in PR#1949. The fix suggested there however can
2415 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
2416 of Apache). So instead simplify the code to flush unconditionally.
2417 This should be fine since flushing with no data to flush is a no op.
2420 *) Handle TLS versions 2.0 and later properly and correctly use the
2421 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
2422 off ancient servers have a habit of sticking around for a while...
2425 *) Modify compression code so it frees up structures without using the
2426 ex_data callbacks. This works around a problem where some applications
2427 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
2428 restarting) then use compression (e.g. SSL with compression) later.
2429 This results in significant per-connection memory leaks and
2430 has caused some security issues including CVE-2008-1678 and
2434 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
2435 change when encrypting or decrypting.
2438 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
2439 connect and renegotiate with servers which do not support RI.
2440 Until RI is more widely deployed this option is enabled by default.
2443 *) Add "missing" ssl ctrls to clear options and mode.
2446 *) If client attempts to renegotiate and doesn't support RI respond with
2447 a no_renegotiation alert as required by RFC5746. Some renegotiating
2448 TLS clients will continue a connection gracefully when they receive
2449 the alert. Unfortunately OpenSSL mishandled this alert and would hang
2450 waiting for a server hello which it will never receive. Now we treat a
2451 received no_renegotiation alert as a fatal error. This is because
2452 applications requesting a renegotiation might well expect it to succeed
2453 and would have no code in place to handle the server denying it so the
2454 only safe thing to do is to terminate the connection.
2457 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
2458 peer supports secure renegotiation and 0 otherwise. Print out peer
2459 renegotiation support in s_client/s_server.
2462 *) Replace the highly broken and deprecated SPKAC certification method with
2463 the updated NID creation version. This should correctly handle UTF8.
2466 *) Implement RFC5746. Re-enable renegotiation but require the extension
2467 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
2468 turns out to be a bad idea. It has been replaced by
2469 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
2470 SSL_CTX_set_options(). This is really not recommended unless you
2471 know what you are doing.
2472 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
2474 *) Fixes to stateless session resumption handling. Use initial_ctx when
2475 issuing and attempting to decrypt tickets in case it has changed during
2476 servername handling. Use a non-zero length session ID when attempting
2477 stateless session resumption: this makes it possible to determine if
2478 a resumption has occurred immediately after receiving server hello
2479 (several places in OpenSSL subtly assume this) instead of later in
2483 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
2484 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
2485 fixes for a few places where the return code is not checked
2487 [Julia Lawall <julia@diku.dk>]
2489 *) Add --strict-warnings option to Configure script to include devteam
2490 warnings in other configurations.
2493 *) Add support for --libdir option and LIBDIR variable in makefiles. This
2494 makes it possible to install openssl libraries in locations which
2495 have names other than "lib", for example "/usr/lib64" which some
2497 [Steve Henson, based on patch from Jeremy Utley]
2499 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
2500 X690 8.9.12 and can produce some misleading textual output of OIDs.
2501 [Steve Henson, reported by Dan Kaminsky]
2503 *) Delete MD2 from algorithm tables. This follows the recommendation in
2504 several standards that it is not used in new applications due to
2505 several cryptographic weaknesses. For binary compatibility reasons
2506 the MD2 API is still compiled in by default.
2509 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
2513 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
2514 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
2516 [Guenter <lists@gknw.net>]
2518 *) Fix the server certificate chain building code to use X509_verify_cert(),
2519 it used to have an ad-hoc builder which was unable to cope with anything
2520 other than a simple chain.
2521 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
2523 *) Don't check self signed certificate signatures in X509_verify_cert()
2524 by default (a flag can override this): it just wastes time without
2525 adding any security. As a useful side effect self signed root CAs
2526 with non-FIPS digests are now usable in FIPS mode.
2529 *) In dtls1_process_out_of_seq_message() the check if the current message
2530 is already buffered was missing. For every new message was memory
2531 allocated, allowing an attacker to perform an denial of service attack
2532 with sending out of seq handshake messages until there is no memory
2533 left. Additionally every future messege was buffered, even if the
2534 sequence number made no sense and would be part of another handshake.
2535 So only messages with sequence numbers less than 10 in advance will be
2536 buffered. (CVE-2009-1378)
2537 [Robin Seggelmann, discovered by Daniel Mentz]
2539 *) Records are buffered if they arrive with a future epoch to be
2540 processed after finishing the corresponding handshake. There is
2541 currently no limitation to this buffer allowing an attacker to perform
2542 a DOS attack with sending records with future epochs until there is no
2543 memory left. This patch adds the pqueue_size() function to detemine
2544 the size of a buffer and limits the record buffer to 100 entries.
2546 [Robin Seggelmann, discovered by Daniel Mentz]
2548 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
2549 parent structure is freed. (CVE-2009-1379)
2552 *) Handle non-blocking I/O properly in SSL_shutdown() call.
2553 [Darryl Miles <darryl-mailinglists@netbauds.net>]
2556 [Ilya O. <vrghost@gmail.com>]
2558 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
2560 *) Disable renegotiation completely - this fixes a severe security
2561 problem (CVE-2009-3555) at the cost of breaking all
2562 renegotiation. Renegotiation can be re-enabled by setting
2563 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
2564 run-time. This is really not recommended unless you know what
2568 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
2570 *) Don't set val to NULL when freeing up structures, it is freed up by
2571 underlying code. If sizeof(void *) > sizeof(long) this can result in
2572 zeroing past the valid field. (CVE-2009-0789)
2573 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
2575 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
2576 checked correctly. This would allow some invalid signed attributes to
2577 appear to verify correctly. (CVE-2009-0591)
2578 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2580 *) Reject UniversalString and BMPString types with invalid lengths. This
2581 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
2582 a legal length. (CVE-2009-0590)
2585 *) Set S/MIME signing as the default purpose rather than setting it
2586 unconditionally. This allows applications to override it at the store
2590 *) Permit restricted recursion of ASN1 strings. This is needed in practice
2591 to handle some structures.
2594 *) Improve efficiency of mem_gets: don't search whole buffer each time
2596 [Jeremy Shapiro <jnshapir@us.ibm.com>]
2598 *) New -hex option for openssl rand.
2601 *) Print out UTF8String and NumericString when parsing ASN1.
2604 *) Support NumericString type for name components.
2607 *) Allow CC in the environment to override the automatically chosen
2608 compiler. Note that nothing is done to ensure flags work with the
2612 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
2614 *) Properly check EVP_VerifyFinal() and similar return values
2616 [Ben Laurie, Bodo Moeller, Google Security Team]
2618 *) Enable TLS extensions by default.
2621 *) Allow the CHIL engine to be loaded, whether the application is
2622 multithreaded or not. (This does not release the developer from the
2623 obligation to set up the dynamic locking callbacks.)
2624 [Sander Temme <sander@temme.net>]
2626 *) Use correct exit code if there is an error in dgst command.
2627 [Steve Henson; problem pointed out by Roland Dirlewanger]
2629 *) Tweak Configure so that you need to say "experimental-jpake" to enable
2630 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
2633 *) Add experimental JPAKE support, including demo authentication in
2634 s_client and s_server.
2637 *) Set the comparison function in v3_addr_canonize().
2638 [Rob Austein <sra@hactrn.net>]
2640 *) Add support for XMPP STARTTLS in s_client.
2641 [Philip Paeps <philip@freebsd.org>]
2643 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
2644 to ensure that even with this option, only ciphersuites in the
2645 server's preference list will be accepted. (Note that the option
2646 applies only when resuming a session, so the earlier behavior was
2647 just about the algorithm choice for symmetric cryptography.)
2650 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
2652 *) Fix NULL pointer dereference if a DTLS server received
2653 ChangeCipherSpec as first record (CVE-2009-1386).
2656 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
2657 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
2660 *) The fix in 0.9.8c that supposedly got rid of unsafe
2661 double-checked locking was incomplete for RSA blinding,
2662 addressing just one layer of what turns out to have been
2663 doubly unsafe triple-checked locking.
2665 So now fix this for real by retiring the MONT_HELPER macro
2666 in crypto/rsa/rsa_eay.c.
2668 [Bodo Moeller; problem pointed out by Marius Schilder]
2670 *) Various precautionary measures:
2672 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
2674 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
2675 (NB: This would require knowledge of the secret session ticket key
2676 to exploit, in which case you'd be SOL either way.)
2678 - Change bn_nist.c so that it will properly handle input BIGNUMs
2679 outside the expected range.
2681 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
2684 [Neel Mehta, Bodo Moeller]
2686 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
2687 the load fails. Useful for distros.
2688 [Ben Laurie and the FreeBSD team]
2690 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
2693 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
2696 *) Expand ENGINE to support engine supplied SSL client certificate functions.
2698 This work was sponsored by Logica.
2701 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
2702 keystores. Support for SSL/TLS client authentication too.
2703 Not compiled unless enable-capieng specified to Configure.
2705 This work was sponsored by Logica.
2708 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
2709 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
2710 attribute creation routines such as certifcate requests and PKCS#12
2714 Changes between 0.9.8g and 0.9.8h [28 May 2008]
2716 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
2717 handshake which could lead to a cilent crash as found using the
2718 Codenomicon TLS test suite (CVE-2008-1672)
2719 [Steve Henson, Mark Cox]
2721 *) Fix double free in TLS server name extensions which could lead to
2722 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
2725 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
2727 Clear the error queue to ensure that error entries left from
2728 older function calls do not interfere with the correct operation.
2729 [Lutz Jaenicke, Erik de Castro Lopo]
2731 *) Remove root CA certificates of commercial CAs:
2733 The OpenSSL project does not recommend any specific CA and does not
2734 have any policy with respect to including or excluding any CA.
2735 Therefore it does not make any sense to ship an arbitrary selection
2736 of root CA certificates with the OpenSSL software.
2739 *) RSA OAEP patches to fix two separate invalid memory reads.
2740 The first one involves inputs when 'lzero' is greater than
2741 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
2742 before the beginning of from). The second one involves inputs where
2743 the 'db' section contains nothing but zeroes (there is a one-byte
2744 invalid read after the end of 'db').
2745 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2747 *) Partial backport from 0.9.9-dev:
2749 Introduce bn_mul_mont (dedicated Montgomery multiplication
2750 procedure) as a candidate for BIGNUM assembler implementation.
2751 While 0.9.9-dev uses assembler for various architectures, only
2752 x86_64 is available by default here in the 0.9.8 branch, and
2753 32-bit x86 is available through a compile-time setting.
2755 To try the 32-bit x86 assembler implementation, use Configure
2756 option "enable-montasm" (which exists only for this backport).
2758 As "enable-montasm" for 32-bit x86 disclaims code stability
2759 anyway, in this constellation we activate additional code
2760 backported from 0.9.9-dev for further performance improvements,
2761 namely BN_from_montgomery_word. (To enable this otherwise,
2762 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
2764 [Andy Polyakov (backport partially by Bodo Moeller)]
2766 *) Add TLS session ticket callback. This allows an application to set
2767 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
2768 values. This is useful for key rollover for example where several key
2769 sets may exist with different names.
2772 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
2773 This was broken until now in 0.9.8 releases, such that the only way
2774 a registered ENGINE could be used (assuming it initialises
2775 successfully on the host) was to explicitly set it as the default
2776 for the relevant algorithms. This is in contradiction with 0.9.7
2777 behaviour and the documentation. With this fix, when an ENGINE is
2778 registered into a given algorithm's table of implementations, the
2779 'uptodate' flag is reset so that auto-discovery will be used next
2780 time a new context for that algorithm attempts to select an
2782 [Ian Lister (tweaked by Geoff Thorpe)]
2784 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2785 implemention in the following ways:
2787 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2790 Lack of BER streaming support means one pass streaming processing is
2791 only supported if data is detached: setting the streaming flag is
2792 ignored for embedded content.
2794 CMS support is disabled by default and must be explicitly enabled
2795 with the enable-cms configuration option.
2798 *) Update the GMP engine glue to do direct copies between BIGNUM and
2799 mpz_t when openssl and GMP use the same limb size. Otherwise the
2800 existing "conversion via a text string export" trick is still used.
2801 [Paul Sheer <paulsheer@gmail.com>]
2803 *) Zlib compression BIO. This is a filter BIO which compressed and
2804 uncompresses any data passed through it.
2807 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2808 RFC3394 compatible AES key wrapping.
2811 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2812 sets string data without copying. X509_ALGOR_set0() and
2813 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2814 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2815 from an X509_ATTRIBUTE structure optionally checking it occurs only
2816 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2820 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2821 to get the expected BN_FLG_CONSTTIME behavior.
2822 [Bodo Moeller (Google)]
2826 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2827 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2828 - added some more tests to do_tests.pl
2829 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2830 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2831 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2832 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2833 - various changes to netware.pl to enable gcc-cross builds on Win32
2835 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2836 - various changes to fix missing prototype warnings
2837 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2838 - added AES, WHIRLPOOL and CPUID assembler code to build files
2839 - added missing AES assembler make rules to mk1mf.pl
2840 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2841 [Guenter Knauf <eflash@gmx.net>]
2843 *) Implement certificate status request TLS extension defined in RFC3546.
2844 A client can set the appropriate parameters and receive the encoded
2845 OCSP response via a callback. A server can query the supplied parameters
2846 and set the encoded OCSP response in the callback. Add simplified examples
2847 to s_client and s_server.
2850 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2852 *) Fix various bugs:
2853 + Binary incompatibility of ssl_ctx_st structure
2854 + DTLS interoperation with non-compliant servers
2855 + Don't call get_session_cb() without proposed session
2856 + Fix ia64 assembler code
2857 [Andy Polyakov, Steve Henson]
2859 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2861 *) DTLS Handshake overhaul. There were longstanding issues with
2862 OpenSSL DTLS implementation, which were making it impossible for
2863 RFC 4347 compliant client to communicate with OpenSSL server.
2864 Unfortunately just fixing these incompatibilities would "cut off"
2865 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2866 server keeps tolerating non RFC compliant syntax. The opposite is
2867 not true, 0.9.8f client can not communicate with earlier server.
2868 This update even addresses CVE-2007-4995.
2871 *) Changes to avoid need for function casts in OpenSSL: some compilers
2872 (gcc 4.2 and later) reject their use.
2873 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2876 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2877 RFC4507bis. The encrypted ticket format is an encrypted encoded
2878 SSL_SESSION structure, that way new session features are automatically
2881 If a client application caches session in an SSL_SESSION structure
2882 support is transparent because tickets are now stored in the encoded
2885 The SSL_CTX structure automatically generates keys for ticket
2886 protection in servers so again support should be possible
2887 with no application modification.
2889 If a client or server wishes to disable RFC4507 support then the option
2890 SSL_OP_NO_TICKET can be set.
2892 Add a TLS extension debugging callback to allow the contents of any client
2893 or server extensions to be examined.
2895 This work was sponsored by Google.
2898 *) Add initial support for TLS extensions, specifically for the server_name
2899 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2900 have new members for a host name. The SSL data structure has an
2901 additional member SSL_CTX *initial_ctx so that new sessions can be
2902 stored in that context to allow for session resumption, even after the
2903 SSL has been switched to a new SSL_CTX in reaction to a client's
2904 server_name extension.
2906 New functions (subject to change):
2908 SSL_get_servername()
2909 SSL_get_servername_type()
2912 New CTRL codes and macros (subject to change):
2914 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2915 - SSL_CTX_set_tlsext_servername_callback()
2916 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2917 - SSL_CTX_set_tlsext_servername_arg()
2918 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2920 openssl s_client has a new '-servername ...' option.
2922 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2923 '-key2 ...', '-servername_fatal' (subject to change). This allows
2924 testing the HostName extension for a specific single host name ('-cert'
2925 and '-key' remain fallbacks for handshakes without HostName
2926 negotiation). If the unrecogninzed_name alert has to be sent, this by
2927 default is a warning; it becomes fatal with the '-servername_fatal'
2930 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2932 *) Add AES and SSE2 assembly language support to VC++ build.
2935 *) Mitigate attack on final subtraction in Montgomery reduction.
2938 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2939 (which previously caused an internal error).
2942 *) Squeeze another 10% out of IGE mode when in != out.
2945 *) AES IGE mode speedup.
2946 [Dean Gaudet (Google)]
2948 *) Add the Korean symmetric 128-bit cipher SEED (see
2949 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2950 add SEED ciphersuites from RFC 4162:
2952 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2953 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2954 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2955 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2957 To minimize changes between patchlevels in the OpenSSL 0.9.8
2958 series, SEED remains excluded from compilation unless OpenSSL
2959 is configured with 'enable-seed'.
2960 [KISA, Bodo Moeller]
2962 *) Mitigate branch prediction attacks, which can be practical if a
2963 single processor is shared, allowing a spy process to extract
2964 information. For detailed background information, see
2965 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2966 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2967 and Necessary Software Countermeasures"). The core of the change
2968 are new versions BN_div_no_branch() and
2969 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2970 respectively, which are slower, but avoid the security-relevant
2971 conditional branches. These are automatically called by BN_div()
2972 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2973 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2974 remove a conditional branch.
2976 BN_FLG_CONSTTIME is the new name for the previous
2977 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2978 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2979 in the exponent causes BN_mod_exp_mont() to use the alternative
2980 implementation in BN_mod_exp_mont_consttime().) The old name
2981 remains as a deprecated alias.
2983 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2984 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2985 constant-time implementations for more than just exponentiation.
2986 Here too the old name is kept as a deprecated alias.
2988 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2989 the BN_BLINDING structure gets an independent copy of the
2990 modulus. This means that the previous "BIGNUM *m" argument to
2991 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2992 essentially becomes "const BIGNUM *m", although we can't actually
2993 change this in the header file before 0.9.9. It allows
2994 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2995 enable BN_FLG_CONSTTIME.
2997 [Matthew D Wood (Intel Corp)]
2999 *) In the SSL/TLS server implementation, be strict about session ID
3000 context matching (which matters if an application uses a single
3001 external cache for different purposes). Previously,
3002 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
3003 set. This did ensure strict client verification, but meant that,
3004 with applications using a single external cache for quite
3005 different requirements, clients could circumvent ciphersuite
3006 restrictions for a given session ID context by starting a session
3007 in a different context.
3010 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3011 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3012 authentication-only ciphersuites.
3015 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
3016 not complete and could lead to a possible single byte overflow
3017 (CVE-2007-5135) [Ben Laurie]
3019 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
3021 *) Since AES128 and AES256 (and similarly Camellia128 and
3022 Camellia256) share a single mask bit in the logic of
3023 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3024 kludge to work properly if AES128 is available and AES256 isn't
3025 (or if Camellia128 is available and Camellia256 isn't).
3028 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
3029 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
3030 When a point or a seed is encoded in a BIT STRING, we need to
3031 prevent the removal of trailing zero bits to get the proper DER
3032 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
3033 of a NamedBitList, for which trailing 0 bits need to be removed.)
3036 *) Have SSL/TLS server implementation tolerate "mismatched" record
3037 protocol version while receiving ClientHello even if the
3038 ClientHello is fragmented. (The server can't insist on the
3039 particular protocol version it has chosen before the ServerHello
3040 message has informed the client about his choice.)
3043 *) Add RFC 3779 support.
3044 [Rob Austein for ARIN, Ben Laurie]
3046 *) Load error codes if they are not already present instead of using a
3047 static variable. This allows them to be cleanly unloaded and reloaded.
3048 Improve header file function name parsing.
3051 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
3052 or CAPABILITY handshake as required by RFCs.
3055 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
3057 *) Introduce limits to prevent malicious keys being able to
3058 cause a denial of service. (CVE-2006-2940)
3059 [Steve Henson, Bodo Moeller]
3061 *) Fix ASN.1 parsing of certain invalid structures that can result
3062 in a denial of service. (CVE-2006-2937) [Steve Henson]
3064 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3065 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3067 *) Fix SSL client code which could crash if connecting to a
3068 malicious SSLv2 server. (CVE-2006-4343)
3069 [Tavis Ormandy and Will Drewry, Google Security Team]
3071 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
3072 match only those. Before that, "AES256-SHA" would be interpreted
3073 as a pattern and match "AES128-SHA" too (since AES128-SHA got
3074 the same strength classification in 0.9.7h) as we currently only
3075 have a single AES bit in the ciphersuite description bitmap.
3076 That change, however, also applied to ciphersuite strings such as
3077 "RC4-MD5" that intentionally matched multiple ciphersuites --
3078 namely, SSL 2.0 ciphersuites in addition to the more common ones
3079 from SSL 3.0/TLS 1.0.
3081 So we change the selection algorithm again: Naming an explicit
3082 ciphersuite selects this one ciphersuite, and any other similar
3083 ciphersuite (same bitmap) from *other* protocol versions.
3084 Thus, "RC4-MD5" again will properly select both the SSL 2.0
3085 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
3087 Since SSL 2.0 does not have any ciphersuites for which the
3088 128/256 bit distinction would be relevant, this works for now.
3089 The proper fix will be to use different bits for AES128 and
3090 AES256, which would have avoided the problems from the beginning;
3091 however, bits are scarce, so we can only do this in a new release
3092 (not just a patchlevel) when we can change the SSL_CIPHER
3093 definition to split the single 'unsigned long mask' bitmap into
3094 multiple values to extend the available space.
3098 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
3100 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3101 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3103 *) Add AES IGE and biIGE modes.
3106 *) Change the Unix randomness entropy gathering to use poll() when
3107 possible instead of select(), since the latter has some
3108 undesirable limitations.
3109 [Darryl Miles via Richard Levitte and Bodo Moeller]
3111 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
3112 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
3113 cannot be implicitly activated as part of, e.g., the "AES" alias.
3114 However, please upgrade to OpenSSL 0.9.9[-dev] for
3115 non-experimental use of the ECC ciphersuites to get TLS extension
3116 support, which is required for curve and point format negotiation
3117 to avoid potential handshake problems.
3120 *) Disable rogue ciphersuites:
3122 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3123 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3124 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3126 The latter two were purportedly from
3127 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3130 Also deactivate the remaining ciphersuites from
3131 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3132 unofficial, and the ID has long expired.
3135 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3136 dual-core machines) and other potential thread-safety issues.
3139 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
3140 versions), which is now available for royalty-free use
3141 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
3142 Also, add Camellia TLS ciphersuites from RFC 4132.
3144 To minimize changes between patchlevels in the OpenSSL 0.9.8
3145 series, Camellia remains excluded from compilation unless OpenSSL
3146 is configured with 'enable-camellia'.
3149 *) Disable the padding bug check when compression is in use. The padding
3150 bug check assumes the first packet is of even length, this is not
3151 necessarily true if compresssion is enabled and can result in false
3152 positives causing handshake failure. The actual bug test is ancient
3153 code so it is hoped that implementations will either have fixed it by
3154 now or any which still have the bug do not support compression.
3157 Changes between 0.9.8a and 0.9.8b [04 May 2006]
3159 *) When applying a cipher rule check to see if string match is an explicit
3160 cipher suite and only match that one cipher suite if it is.
3163 *) Link in manifests for VC++ if needed.
3164 [Austin Ziegler <halostatue@gmail.com>]
3166 *) Update support for ECC-based TLS ciphersuites according to
3167 draft-ietf-tls-ecc-12.txt with proposed changes (but without
3168 TLS extensions, which are supported starting with the 0.9.9
3169 branch, not in the OpenSSL 0.9.8 branch).
3172 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
3173 opaque EVP_CIPHER_CTX handling.
3176 *) Fixes and enhancements to zlib compression code. We now only use
3177 "zlib1.dll" and use the default __cdecl calling convention on Win32
3178 to conform with the standards mentioned here:
3179 http://www.zlib.net/DLL_FAQ.txt
3180 Static zlib linking now works on Windows and the new --with-zlib-include
3181 --with-zlib-lib options to Configure can be used to supply the location
3182 of the headers and library. Gracefully handle case where zlib library
3186 *) Several fixes and enhancements to the OID generation code. The old code
3187 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
3188 handle numbers larger than ULONG_MAX, truncated printing and had a
3189 non standard OBJ_obj2txt() behaviour.
3192 *) Add support for building of engines under engine/ as shared libraries
3193 under VC++ build system.
3196 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
3197 Hopefully, we will not see any false combination of paths any more.
3200 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
3202 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3203 (part of SSL_OP_ALL). This option used to disable the
3204 countermeasure against man-in-the-middle protocol-version
3205 rollback in the SSL 2.0 server implementation, which is a bad
3206 idea. (CVE-2005-2969)
3208 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3209 for Information Security, National Institute of Advanced Industrial
3210 Science and Technology [AIST], Japan)]
3212 *) Add two function to clear and return the verify parameter flags.
3215 *) Keep cipherlists sorted in the source instead of sorting them at
3216 runtime, thus removing the need for a lock.
3219 *) Avoid some small subgroup attacks in Diffie-Hellman.
3220 [Nick Mathewson and Ben Laurie]
3222 *) Add functions for well-known primes.
3225 *) Extended Windows CE support.
3226 [Satoshi Nakamura and Andy Polyakov]
3228 *) Initialize SSL_METHOD structures at compile time instead of during
3229 runtime, thus removing the need for a lock.
3232 *) Make PKCS7_decrypt() work even if no certificate is supplied by
3233 attempting to decrypt each encrypted key in turn. Add support to
3237 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
3239 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
3242 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
3245 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
3246 key into the same file any more.
3249 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
3252 *) Add -utf8 command line and config file option to 'ca'.
3253 [Stefan <stf@udoma.org]
3255 *) Removed the macro des_crypt(), as it seems to conflict with some
3256 libraries. Use DES_crypt().
3259 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
3260 involves renaming the source and generated shared-libs for
3261 both. The engines will accept the corrected or legacy ids
3262 ('ncipher' and '4758_cca' respectively) when binding. NB,
3263 this only applies when building 'shared'.
3264 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
3266 *) Add attribute functions to EVP_PKEY structure. Modify
3267 PKCS12_create() to recognize a CSP name attribute and
3268 use it. Make -CSP option work again in pkcs12 utility.
3271 *) Add new functionality to the bn blinding code:
3272 - automatic re-creation of the BN_BLINDING parameters after
3273 a fixed number of uses (currently 32)
3274 - add new function for parameter creation
3275 - introduce flags to control the update behaviour of the
3276 BN_BLINDING parameters
3277 - hide BN_BLINDING structure
3278 Add a second BN_BLINDING slot to the RSA structure to improve
3279 performance when a single RSA object is shared among several
3283 *) Add support for DTLS.
3284 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
3286 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
3287 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
3290 *) Remove buggy and incompletet DH cert support from
3291 ssl/ssl_rsa.c and ssl/s3_both.c
3294 *) Use SHA-1 instead of MD5 as the default digest algorithm for
3295 the apps/openssl applications.
3298 *) Compile clean with "-Wall -Wmissing-prototypes
3299 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
3300 DEBUG_SAFESTACK must also be set.
3303 *) Change ./Configure so that certain algorithms can be disabled by default.
3304 The new counterpiece to "no-xxx" is "enable-xxx".
3306 The patented RC5 and MDC2 algorithms will now be disabled unless
3307 "enable-rc5" and "enable-mdc2", respectively, are specified.
3309 (IDEA remains enabled despite being patented. This is because IDEA
3310 is frequently required for interoperability, and there is no license
3311 fee for non-commercial use. As before, "no-idea" can be used to
3312 avoid this algorithm.)
3316 *) Add processing of proxy certificates (see RFC 3820). This work was
3317 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
3318 EGEE (Enabling Grids for E-science in Europe).
3321 *) RC4 performance overhaul on modern architectures/implementations, such
3322 as Intel P4, IA-64 and AMD64.
3325 *) New utility extract-section.pl. This can be used specify an alternative
3326 section number in a pod file instead of having to treat each file as
3327 a separate case in Makefile. This can be done by adding two lines to the
3330 =for comment openssl_section:XXX
3332 The blank line is mandatory.
3336 *) New arguments -certform, -keyform and -pass for s_client and s_server
3337 to allow alternative format key and certificate files and passphrase
3341 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
3342 update associated structures and add various utility functions.
3344 Add new policy related verify parameters, include policy checking in
3345 standard verify code. Enhance 'smime' application with extra parameters
3346 to support policy checking and print out.
3349 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
3350 Nehemiah processors. These extensions support AES encryption in hardware
3351 as well as RNG (though RNG support is currently disabled).
3352 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
3354 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
3357 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
3358 [Andy Polyakov and a number of other people]
3360 *) Improved PowerPC platform support. Most notably BIGNUM assembler
3361 implementation contributed by IBM.
3362 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
3364 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
3365 exponent rather than 'unsigned long'. There is a corresponding change to
3366 the new 'rsa_keygen' element of the RSA_METHOD structure.
3367 [Jelte Jansen, Geoff Thorpe]
3369 *) Functionality for creating the initial serial number file is now
3370 moved from CA.pl to the 'ca' utility with a new option -create_serial.
3372 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
3373 number file to 1, which is bound to cause problems. To avoid
3374 the problems while respecting compatibility between different 0.9.7
3375 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
3376 CA.pl for serial number initialization. With the new release 0.9.8,
3377 we can fix the problem directly in the 'ca' utility.)
3380 *) Reduced header interdepencies by declaring more opaque objects in
3381 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
3382 give fewer recursive includes, which could break lazy source code - so
3383 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
3384 developers should define this symbol when building and using openssl to
3385 ensure they track the recommended behaviour, interfaces, [etc], but
3386 backwards-compatible behaviour prevails when this isn't defined.
3389 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
3392 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
3393 This will generate a random key of the appropriate length based on the
3394 cipher context. The EVP_CIPHER can provide its own random key generation
3395 routine to support keys of a specific form. This is used in the des and
3396 3des routines to generate a key of the correct parity. Update S/MIME
3397 code to use new functions and hence generate correct parity DES keys.
3398 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
3399 valid (weak or incorrect parity).
3402 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
3403 as looking them up. This is useful when the verified structure may contain
3404 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
3405 present unless the new PKCS7_NO_CRL flag is asserted.
3408 *) Extend ASN1 oid configuration module. It now additionally accepts the
3411 shortName = some long name, 1.2.3.4
3414 *) Reimplemented the BN_CTX implementation. There is now no more static
3415 limitation on the number of variables it can handle nor the depth of the
3416 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
3417 information can now expand as required, and rather than having a single
3418 static array of bignums, BN_CTX now uses a linked-list of such arrays
3419 allowing it to expand on demand whilst maintaining the usefulness of
3420 BN_CTX's "bundling".
3423 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
3424 to allow all RSA operations to function using a single BN_CTX.
3427 *) Preliminary support for certificate policy evaluation and checking. This
3428 is initially intended to pass the tests outlined in "Conformance Testing
3429 of Relying Party Client Certificate Path Processing Logic" v1.07.
3432 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
3433 remained unused and not that useful. A variety of other little bignum
3434 tweaks and fixes have also been made continuing on from the audit (see
3438 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
3439 associated ASN1, EVP and SSL functions and old ASN1 macros.
3442 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
3443 and this should never fail. So the return value from the use of
3444 BN_set_word() (which can fail due to needless expansion) is now deprecated;
3445 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
3448 *) BN_CTX_get() should return zero-valued bignums, providing the same
3449 initialised value as BN_new().
3450 [Geoff Thorpe, suggested by Ulf Möller]
3452 *) Support for inhibitAnyPolicy certificate extension.
3455 *) An audit of the BIGNUM code is underway, for which debugging code is
3456 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
3457 is considered valid when processing BIGNUMs, and causes execution to
3458 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
3459 further steps are taken to deliberately pollute unused data in BIGNUM
3460 structures to try and expose faulty code further on. For now, openssl will
3461 (in its default mode of operation) continue to tolerate the inconsistent
3462 forms that it has tolerated in the past, but authors and packagers should
3463 consider trying openssl and their own applications when compiled with
3464 these debugging symbols defined. It will help highlight potential bugs in
3465 their own code, and will improve the test coverage for OpenSSL itself. At
3466 some point, these tighter rules will become openssl's default to improve
3467 maintainability, though the assert()s and other overheads will remain only
3468 in debugging configurations. See bn.h for more details.
3469 [Geoff Thorpe, Nils Larsch, Ulf Möller]
3471 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
3472 that can only be obtained through BN_CTX_new() (which implicitly
3473 initialises it). The presence of this function only made it possible
3474 to overwrite an existing structure (and cause memory leaks).
3477 *) Because of the callback-based approach for implementing LHASH as a
3478 template type, lh_insert() adds opaque objects to hash-tables and
3479 lh_doall() or lh_doall_arg() are typically used with a destructor callback
3480 to clean up those corresponding objects before destroying the hash table
3481 (and losing the object pointers). So some over-zealous constifications in
3482 LHASH have been relaxed so that lh_insert() does not take (nor store) the
3483 objects as "const" and the lh_doall[_arg] callback wrappers are not
3484 prototyped to have "const" restrictions on the object pointers they are
3485 given (and so aren't required to cast them away any more).
3488 *) The tmdiff.h API was so ugly and minimal that our own timing utility
3489 (speed) prefers to use its own implementation. The two implementations
3490 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
3491 its object type properly exposed (MS_TM) instead of casting to/from "char
3492 *". This may still change yet if someone realises MS_TM and "ms_time_***"
3493 aren't necessarily the greatest nomenclatures - but this is what was used
3494 internally to the implementation so I've used that for now.
3497 *) Ensure that deprecated functions do not get compiled when
3498 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
3499 the self-tests were still using deprecated key-generation functions so
3500 these have been updated also.
3503 *) Reorganise PKCS#7 code to separate the digest location functionality
3504 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
3505 New function PKCS7_set_digest() to set the digest type for PKCS#7
3506 digestedData type. Add additional code to correctly generate the
3507 digestedData type and add support for this type in PKCS7 initialization
3511 *) New function PKCS7_set0_type_other() this initializes a PKCS7
3512 structure of type "other".
3515 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
3516 sure the loop does correctly stop and breaking ("division by zero")
3517 modulus operations are not performed. The (pre-generated) prime
3518 table crypto/bn/bn_prime.h was already correct, but it could not be
3519 re-generated on some platforms because of the "division by zero"
3520 situation in the script.
3521 [Ralf S. Engelschall]
3523 *) Update support for ECC-based TLS ciphersuites according to
3524 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
3525 SHA-1 now is only used for "small" curves (where the
3526 representation of a field element takes up to 24 bytes); for
3527 larger curves, the field element resulting from ECDH is directly
3528 used as premaster secret.
3529 [Douglas Stebila (Sun Microsystems Laboratories)]
3531 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
3532 curve secp160r1 to the tests.
3533 [Douglas Stebila (Sun Microsystems Laboratories)]
3535 *) Add the possibility to load symbols globally with DSO.
3536 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
3538 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
3539 control of the error stack.
3542 *) Add support for STORE in ENGINE.
3545 *) Add the STORE type. The intention is to provide a common interface
3546 to certificate and key stores, be they simple file-based stores, or
3547 HSM-type store, or LDAP stores, or...
3548 NOTE: The code is currently UNTESTED and isn't really used anywhere.
3551 *) Add a generic structure called OPENSSL_ITEM. This can be used to
3552 pass a list of arguments to any function as well as provide a way
3553 for a function to pass data back to the caller.
3556 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
3557 works like BUF_strdup() but can be used to duplicate a portion of
3558 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
3562 *) Add the function sk_find_ex() which works like sk_find(), but will
3563 return an index to an element even if an exact match couldn't be
3564 found. The index is guaranteed to point at the element where the
3565 searched-for key would be inserted to preserve sorting order.
3568 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
3569 takes an extra flags argument for optional functionality. Currently,
3570 the following flags are defined:
3572 OBJ_BSEARCH_VALUE_ON_NOMATCH
3573 This one gets OBJ_bsearch_ex() to return a pointer to the first
3574 element where the comparing function returns a negative or zero
3577 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
3578 This one gets OBJ_bsearch_ex() to return a pointer to the first
3579 element where the comparing function returns zero. This is useful
3580 if there are more than one element where the comparing function
3584 *) Make it possible to create self-signed certificates with 'openssl ca'
3585 in such a way that the self-signed certificate becomes part of the
3586 CA database and uses the same mechanisms for serial number generation
3587 as all other certificate signing. The new flag '-selfsign' enables
3588 this functionality. Adapt CA.sh and CA.pl.in.
3591 *) Add functionality to check the public key of a certificate request
3592 against a given private. This is useful to check that a certificate
3593 request can be signed by that key (self-signing).
3596 *) Make it possible to have multiple active certificates with the same
3597 subject in the CA index file. This is done only if the keyword
3598 'unique_subject' is set to 'no' in the main CA section (default
3599 if 'CA_default') of the configuration file. The value is saved
3600 with the database itself in a separate index attribute file,
3601 named like the index file with '.attr' appended to the name.
3604 *) Generate muti valued AVAs using '+' notation in config files for
3608 *) Support for nameConstraints certificate extension.
3611 *) Support for policyConstraints certificate extension.
3614 *) Support for policyMappings certificate extension.
3617 *) Make sure the default DSA_METHOD implementation only uses its
3618 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
3619 and change its own handlers to be NULL so as to remove unnecessary
3620 indirection. This lets alternative implementations fallback to the
3621 default implementation more easily.
3624 *) Support for directoryName in GeneralName related extensions
3628 *) Make it possible to link applications using Makefile.shared.
3629 Make that possible even when linking against static libraries!
3632 *) Support for single pass processing for S/MIME signing. This now
3633 means that S/MIME signing can be done from a pipe, in addition
3634 cleartext signing (multipart/signed type) is effectively streaming
3635 and the signed data does not need to be all held in memory.
3637 This is done with a new flag PKCS7_STREAM. When this flag is set
3638 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
3639 is done after the data is output (and digests calculated) in
3640 SMIME_write_PKCS7().
3643 *) Add full support for -rpath/-R, both in shared libraries and
3644 applications, at least on the platforms where it's known how
3648 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
3649 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
3650 will now compute a table of multiples of the generator that
3651 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
3652 faster (notably in the case of a single point multiplication,
3653 scalar * generator).
3654 [Nils Larsch, Bodo Moeller]
3656 *) IPv6 support for certificate extensions. The various extensions
3657 which use the IP:a.b.c.d can now take IPv6 addresses using the
3658 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
3662 *) Added an ENGINE that implements RSA by performing private key
3663 exponentiations with the GMP library. The conversions to and from
3664 GMP's mpz_t format aren't optimised nor are any montgomery forms
3665 cached, and on x86 it appears OpenSSL's own performance has caught up.
3666 However there are likely to be other architectures where GMP could
3667 provide a boost. This ENGINE is not built in by default, but it can be
3668 specified at Configure time and should be accompanied by the necessary
3669 linker additions, eg;
3670 ./config -DOPENSSL_USE_GMP -lgmp
3673 *) "openssl engine" will not display ENGINE/DSO load failure errors when
3674 testing availability of engines with "-t" - the old behaviour is
3675 produced by increasing the feature's verbosity with "-tt".
3678 *) ECDSA routines: under certain error conditions uninitialized BN objects
3679 could be freed. Solution: make sure initialization is performed early
3680 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
3684 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
3685 and DH_METHOD (eg. by ENGINE implementations) to override the normal
3686 software implementations. For DSA and DH, parameter generation can
3687 also be overriden by providing the appropriate method callbacks.
3690 *) Change the "progress" mechanism used in key-generation and
3691 primality testing to functions that take a new BN_GENCB pointer in
3692 place of callback/argument pairs. The new API functions have "_ex"
3693 postfixes and the older functions are reimplemented as wrappers for
3694 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
3695 declarations of the old functions to help (graceful) attempts to
3696 migrate to the new functions. Also, the new key-generation API
3697 functions operate on a caller-supplied key-structure and return
3698 success/failure rather than returning a key or NULL - this is to
3699 help make "keygen" another member function of RSA_METHOD etc.
3701 Example for using the new callback interface:
3703 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
3707 BN_GENCB_set(&my_cb, my_callback, my_arg);
3709 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
3710 /* For the meaning of a, b in calls to my_callback(), see the
3711 * documentation of the function that calls the callback.
3712 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
3713 * my_callback should return 1 if it wants BN_is_prime_ex()
3714 * to continue, or 0 to stop.
3719 *) Change the ZLIB compression method to be stateful, and make it
3720 available to TLS with the number defined in
3721 draft-ietf-tls-compression-04.txt.
3724 *) Add the ASN.1 structures and functions for CertificatePair, which
3725 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
3727 CertificatePair ::= SEQUENCE {
3728 forward [0] Certificate OPTIONAL,
3729 reverse [1] Certificate OPTIONAL,
3730 -- at least one of the pair shall be present -- }
3732 Also implement the PEM functions to read and write certificate
3733 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
3735 This needed to be defined, mostly for the sake of the LDAP
3736 attribute crossCertificatePair, but may prove useful elsewhere as
3740 *) Make it possible to inhibit symlinking of shared libraries in
3741 Makefile.shared, for Cygwin's sake.
3744 *) Extend the BIGNUM API by creating a function
3745 void BN_set_negative(BIGNUM *a, int neg);
3746 and a macro that behave like
3747 int BN_is_negative(const BIGNUM *a);
3749 to avoid the need to access 'a->neg' directly in applications.
3752 *) Implement fast modular reduction for pseudo-Mersenne primes
3753 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
3754 EC_GROUP_new_curve_GFp() will now automatically use this
3756 [Nils Larsch <nla@trustcenter.de>]
3758 *) Add new lock type (CRYPTO_LOCK_BN).
3761 *) Change the ENGINE framework to automatically load engines
3762 dynamically from specific directories unless they could be
3763 found to already be built in or loaded. Move all the
3764 current engines except for the cryptodev one to a new
3766 The engines in engines/ are built as shared libraries if
3767 the "shared" options was given to ./Configure or ./config.
3768 Otherwise, they are inserted in libcrypto.a.
3769 /usr/local/ssl/engines is the default directory for dynamic
3770 engines, but that can be overriden at configure time through
3771 the usual use of --prefix and/or --openssldir, and at run
3772 time with the environment variable OPENSSL_ENGINES.
3773 [Geoff Thorpe and Richard Levitte]
3775 *) Add Makefile.shared, a helper makefile to build shared
3776 libraries. Addapt Makefile.org.
3779 *) Add version info to Win32 DLLs.
3780 [Peter 'Luna' Runestig" <peter@runestig.com>]
3782 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3783 can be added using this API to created arbitrary PKCS#12
3784 files while avoiding the low level API.
3786 New options to PKCS12_create(), key or cert can be NULL and
3787 will then be omitted from the output file. The encryption
3788 algorithm NIDs can be set to -1 for no encryption, the mac
3789 iteration count can be set to 0 to omit the mac.
3791 Enhance pkcs12 utility by making the -nokeys and -nocerts
3792 options work when creating a PKCS#12 file. New option -nomac
3793 to omit the mac, NONE can be set for an encryption algorithm.
3794 New code is modified to use the enhanced PKCS12_create()
3795 instead of the low level API.
3798 *) Extend ASN1 encoder to support indefinite length constructed
3799 encoding. This can output sequences tags and octet strings in
3800 this form. Modify pk7_asn1.c to support indefinite length
3801 encoding. This is experimental and needs additional code to
3802 be useful, such as an ASN1 bio and some enhanced streaming
3805 Extend template encode functionality so that tagging is passed
3806 down to the template encoder.
3809 *) Let 'openssl req' fail if an argument to '-newkey' is not
3810 recognized instead of using RSA as a default.
3813 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3814 As these are not official, they are not included in "ALL";
3815 the "ECCdraft" ciphersuite group alias can be used to select them.
3816 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3818 *) Add ECDH engine support.
3819 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3821 *) Add ECDH in new directory crypto/ecdh/.
3822 [Douglas Stebila (Sun Microsystems Laboratories)]
3824 *) Let BN_rand_range() abort with an error after 100 iterations
3825 without success (which indicates a broken PRNG).
3828 *) Change BN_mod_sqrt() so that it verifies that the input value
3829 is really the square of the return value. (Previously,
3830 BN_mod_sqrt would show GIGO behaviour.)
3833 *) Add named elliptic curves over binary fields from X9.62, SECG,
3834 and WAP/WTLS; add OIDs that were still missing.
3836 [Sheueling Chang Shantz and Douglas Stebila
3837 (Sun Microsystems Laboratories)]
3839 *) Extend the EC library for elliptic curves over binary fields
3840 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3843 EC_GF2m_simple_method
3847 EC_GROUP_new_curve_GF2m
3848 EC_GROUP_set_curve_GF2m
3849 EC_GROUP_get_curve_GF2m
3850 EC_POINT_set_affine_coordinates_GF2m
3851 EC_POINT_get_affine_coordinates_GF2m
3852 EC_POINT_set_compressed_coordinates_GF2m
3854 Point compression for binary fields is disabled by default for
3855 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3858 As binary polynomials are represented as BIGNUMs, various members
3859 of the EC_GROUP and EC_POINT data structures can be shared
3860 between the implementations for prime fields and binary fields;
3861 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3862 are essentially identical to their ..._GFp counterparts.
3863 (For simplicity, the '..._GFp' prefix has been dropped from
3864 various internal method names.)
3866 An internal 'field_div' method (similar to 'field_mul' and
3867 'field_sqr') has been added; this is used only for binary fields.
3869 [Sheueling Chang Shantz and Douglas Stebila
3870 (Sun Microsystems Laboratories)]
3872 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3873 through methods ('mul', 'precompute_mult').
3875 The generic implementations (now internally called 'ec_wNAF_mul'
3876 and 'ec_wNAF_precomputed_mult') remain the default if these
3877 methods are undefined.
3879 [Sheueling Chang Shantz and Douglas Stebila
3880 (Sun Microsystems Laboratories)]
3882 *) New function EC_GROUP_get_degree, which is defined through
3883 EC_METHOD. For curves over prime fields, this returns the bit
3884 length of the modulus.
3886 [Sheueling Chang Shantz and Douglas Stebila
3887 (Sun Microsystems Laboratories)]
3889 *) New functions EC_GROUP_dup, EC_POINT_dup.
3890 (These simply call ..._new and ..._copy).
3892 [Sheueling Chang Shantz and Douglas Stebila
3893 (Sun Microsystems Laboratories)]
3895 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3896 Polynomials are represented as BIGNUMs (where the sign bit is not
3897 used) in the following functions [macros]:
3900 BN_GF2m_sub [= BN_GF2m_add]
3901 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3902 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3903 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3905 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3906 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3907 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3908 BN_GF2m_cmp [= BN_ucmp]
3910 (Note that only the 'mod' functions are actually for fields GF(2^m).
3911 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3913 For some functions, an the irreducible polynomial defining a
3914 field can be given as an 'unsigned int[]' with strictly
3915 decreasing elements giving the indices of those bits that are set;
3916 i.e., p[] represents the polynomial
3917 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3919 p[0] > p[1] > ... > p[k] = 0.
3920 This applies to the following functions:
3925 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3926 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3928 BN_GF2m_mod_sqrt_arr
3929 BN_GF2m_mod_solve_quad_arr
3933 Conversion can be performed by the following functions:
3938 bntest.c has additional tests for binary polynomial arithmetic.
3940 Two implementations for BN_GF2m_mod_div() are available.
3941 The default algorithm simply uses BN_GF2m_mod_inv() and
3942 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3943 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3944 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3946 [Sheueling Chang Shantz and Douglas Stebila
3947 (Sun Microsystems Laboratories)]
3949 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3950 functionality is disabled at compile-time.
3951 [Douglas Stebila <douglas.stebila@sun.com>]
3953 *) Change default behaviour of 'openssl asn1parse' so that more
3954 information is visible when viewing, e.g., a certificate:
3956 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3957 mode the content of non-printable OCTET STRINGs is output in a
3958 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3959 avoid the appearance of a printable string.
3960 [Nils Larsch <nla@trustcenter.de>]
3962 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3964 EC_GROUP_set_asn1_flag()
3965 EC_GROUP_get_asn1_flag()
3966 EC_GROUP_set_point_conversion_form()
3967 EC_GROUP_get_point_conversion_form()
3968 These control ASN1 encoding details:
3969 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3970 has been set to OPENSSL_EC_NAMED_CURVE.
3971 - Points are encoded in uncompressed form by default; options for
3972 asn1_for are as for point2oct, namely
3973 POINT_CONVERSION_COMPRESSED
3974 POINT_CONVERSION_UNCOMPRESSED
3975 POINT_CONVERSION_HYBRID
3977 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3980 EC_GROUP_get0_seed()
3981 EC_GROUP_get_seed_len()
3982 This is used only for ASN1 purposes (so far).
3983 [Nils Larsch <nla@trustcenter.de>]
3985 *) Add 'field_type' member to EC_METHOD, which holds the NID
3986 of the appropriate field type OID. The new function
3987 EC_METHOD_get_field_type() returns this value.
3988 [Nils Larsch <nla@trustcenter.de>]
3993 EC_POINT_point2hex()
3994 EC_POINT_hex2point()
3995 providing useful interfaces to EC_POINT_point2oct() and
3996 EC_POINT_oct2point().
3997 [Nils Larsch <nla@trustcenter.de>]
3999 *) Change internals of the EC library so that the functions
4000 EC_GROUP_set_generator()
4001 EC_GROUP_get_generator()
4002 EC_GROUP_get_order()
4003 EC_GROUP_get_cofactor()
4004 are implemented directly in crypto/ec/ec_lib.c and not dispatched
4005 to methods, which would lead to unnecessary code duplication when
4006 adding different types of curves.
4007 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
4009 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
4010 arithmetic, and such that modified wNAFs are generated
4011 (which avoid length expansion in many cases).
4014 *) Add a function EC_GROUP_check_discriminant() (defined via
4015 EC_METHOD) that verifies that the curve discriminant is non-zero.
4017 Add a function EC_GROUP_check() that makes some sanity tests
4018 on a EC_GROUP, its generator and order. This includes
4019 EC_GROUP_check_discriminant().
4020 [Nils Larsch <nla@trustcenter.de>]
4022 *) Add ECDSA in new directory crypto/ecdsa/.
4024 Add applications 'openssl ecparam' and 'openssl ecdsa'
4025 (these are based on 'openssl dsaparam' and 'openssl dsa').
4027 ECDSA support is also included in various other files across the
4028 library. Most notably,
4029 - 'openssl req' now has a '-newkey ecdsa:file' option;
4030 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
4031 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
4032 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
4033 them suitable for ECDSA where domain parameters must be
4034 extracted before the specific public key;
4035 - ECDSA engine support has been added.
4036 [Nils Larsch <nla@trustcenter.de>]
4038 *) Include some named elliptic curves, and add OIDs from X9.62,
4039 SECG, and WAP/WTLS. Each curve can be obtained from the new
4041 EC_GROUP_new_by_curve_name(),
4042 and the list of available named curves can be obtained with
4043 EC_get_builtin_curves().
4044 Also add a 'curve_name' member to EC_GROUP objects, which can be
4046 EC_GROUP_set_curve_name()
4047 EC_GROUP_get_curve_name()
4048 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
4050 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
4051 was actually never needed) and in BN_mul(). The removal in BN_mul()
4052 required a small change in bn_mul_part_recursive() and the addition
4053 of the functions bn_cmp_part_words(), bn_sub_part_words() and
4054 bn_add_part_words(), which do the same thing as bn_cmp_words(),
4055 bn_sub_words() and bn_add_words() except they take arrays with
4059 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
4061 *) Cleanse PEM buffers before freeing them since they may contain
4063 [Benjamin Bennett <ben@psc.edu>]
4065 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
4066 a ciphersuite string such as "DEFAULT:RSA" cannot enable
4067 authentication-only ciphersuites.
4070 *) Since AES128 and AES256 share a single mask bit in the logic of
4071 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
4072 kludge to work properly if AES128 is available and AES256 isn't.
4075 *) Expand security boundary to match 1.1.1 module.
4078 *) Remove redundant features: hash file source, editing of test vectors
4079 modify fipsld to use external fips_premain.c signature.
4082 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
4083 run algorithm test programs.
4086 *) Make algorithm test programs more tolerant of whitespace.
4089 *) Have SSL/TLS server implementation tolerate "mismatched" record
4090 protocol version while receiving ClientHello even if the
4091 ClientHello is fragmented. (The server can't insist on the
4092 particular protocol version it has chosen before the ServerHello
4093 message has informed the client about his choice.)
4096 *) Load error codes if they are not already present instead of using a
4097 static variable. This allows them to be cleanly unloaded and reloaded.
4100 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
4102 *) Introduce limits to prevent malicious keys being able to
4103 cause a denial of service. (CVE-2006-2940)
4104 [Steve Henson, Bodo Moeller]
4106 *) Fix ASN.1 parsing of certain invalid structures that can result
4107 in a denial of service. (CVE-2006-2937) [Steve Henson]
4109 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
4110 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
4112 *) Fix SSL client code which could crash if connecting to a
4113 malicious SSLv2 server. (CVE-2006-4343)
4114 [Tavis Ormandy and Will Drewry, Google Security Team]
4116 *) Change ciphersuite string processing so that an explicit
4117 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
4118 will no longer include "AES128-SHA"), and any other similar
4119 ciphersuite (same bitmap) from *other* protocol versions (so that
4120 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
4121 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
4122 changes from 0.9.8b and 0.9.8d.
4125 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
4127 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
4128 (CVE-2006-4339) [Ben Laurie and Google Security Team]
4130 *) Change the Unix randomness entropy gathering to use poll() when
4131 possible instead of select(), since the latter has some
4132 undesirable limitations.
4133 [Darryl Miles via Richard Levitte and Bodo Moeller]
4135 *) Disable rogue ciphersuites:
4137 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
4138 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
4139 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
4141 The latter two were purportedly from
4142 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
4145 Also deactive the remaining ciphersuites from
4146 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
4147 unofficial, and the ID has long expired.
4150 *) Fix RSA blinding Heisenbug (problems sometimes occured on
4151 dual-core machines) and other potential thread-safety issues.
4154 Changes between 0.9.7i and 0.9.7j [04 May 2006]
4156 *) Adapt fipsld and the build system to link against the validated FIPS
4157 module in FIPS mode.
4160 *) Fixes for VC++ 2005 build under Windows.
4163 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
4164 from a Windows bash shell such as MSYS. It is autodetected from the
4165 "config" script when run from a VC++ environment. Modify standard VC++
4166 build to use fipscanister.o from the GNU make build.
4169 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
4171 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
4172 The value now differs depending on if you build for FIPS or not.
4173 BEWARE! A program linked with a shared FIPSed libcrypto can't be
4174 safely run with a non-FIPSed libcrypto, as it may crash because of
4175 the difference induced by this change.
4178 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
4180 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
4181 (part of SSL_OP_ALL). This option used to disable the
4182 countermeasure against man-in-the-middle protocol-version
4183 rollback in the SSL 2.0 server implementation, which is a bad
4184 idea. (CVE-2005-2969)
4186 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
4187 for Information Security, National Institute of Advanced Industrial
4188 Science and Technology [AIST], Japan)]
4190 *) Minimal support for X9.31 signatures and PSS padding modes. This is
4191 mainly for FIPS compliance and not fully integrated at this stage.
4194 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
4195 the exponentiation using a fixed-length exponent. (Otherwise,
4196 the information leaked through timing could expose the secret key
4197 after many signatures; cf. Bleichenbacher's attack on DSA with
4201 *) Make a new fixed-window mod_exp implementation the default for
4202 RSA, DSA, and DH private-key operations so that the sequence of
4203 squares and multiplies and the memory access pattern are
4204 independent of the particular secret key. This will mitigate
4205 cache-timing and potential related attacks.
4207 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
4208 and this is automatically used by BN_mod_exp_mont() if the new flag
4209 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
4210 will use this BN flag for private exponents unless the flag
4211 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
4212 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
4214 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
4216 *) Change the client implementation for SSLv23_method() and
4217 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
4218 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
4219 (Previously, the SSL 2.0 backwards compatible Client Hello
4220 message format would be used even with SSL_OP_NO_SSLv2.)
4223 *) Add support for smime-type MIME parameter in S/MIME messages which some
4227 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
4228 a threadsafe manner. Modify rsa code to use new function and add calls
4229 to dsa and dh code (which had race conditions before).
4232 *) Include the fixed error library code in the C error file definitions
4233 instead of fixing them up at runtime. This keeps the error code
4234 structures constant.
4237 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
4239 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
4242 *) Fixes for newer kerberos headers. NB: the casts are needed because
4243 the 'length' field is signed on one version and unsigned on another
4244 with no (?) obvious way to tell the difference, without these VC++
4245 complains. Also the "definition" of FAR (blank) is no longer included
4246 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
4247 some needed definitions.
4250 *) Undo Cygwin change.
4253 *) Added support for proxy certificates according to RFC 3820.
4254 Because they may be a security thread to unaware applications,
4255 they must be explicitely allowed in run-time. See
4256 docs/HOWTO/proxy_certificates.txt for further information.
4259 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
4261 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
4262 server and client random values. Previously
4263 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
4264 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
4266 This change has negligible security impact because:
4268 1. Server and client random values still have 24 bytes of pseudo random
4271 2. Server and client random values are sent in the clear in the initial
4274 3. The master secret is derived using the premaster secret (48 bytes in
4275 size for static RSA ciphersuites) as well as client server and random
4278 The OpenSSL team would like to thank the UK NISCC for bringing this issue
4281 [Stephen Henson, reported by UK NISCC]
4283 *) Use Windows randomness collection on Cygwin.
4286 *) Fix hang in EGD/PRNGD query when communication socket is closed
4287 prematurely by EGD/PRNGD.
4288 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
4290 *) Prompt for pass phrases when appropriate for PKCS12 input format.
4293 *) Back-port of selected performance improvements from development
4294 branch, as well as improved support for PowerPC platforms.
4297 *) Add lots of checks for memory allocation failure, error codes to indicate
4298 failure and freeing up memory if a failure occurs.
4299 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
4301 *) Add new -passin argument to dgst.
4304 *) Perform some character comparisons of different types in X509_NAME_cmp:
4305 this is needed for some certificates that reencode DNs into UTF8Strings
4306 (in violation of RFC3280) and can't or wont issue name rollover
4310 *) Make an explicit check during certificate validation to see that
4311 the CA setting in each certificate on the chain is correct. As a
4312 side effect always do the following basic checks on extensions,
4313 not just when there's an associated purpose to the check:
4315 - if there is an unhandled critical extension (unless the user
4316 has chosen to ignore this fault)
4317 - if the path length has been exceeded (if one is set at all)
4318 - that certain extensions fit the associated purpose (if one has
4322 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
4324 *) Avoid a race condition when CRLs are checked in a multi threaded
4325 environment. This would happen due to the reordering of the revoked
4326 entries during signature checking and serial number lookup. Now the
4327 encoding is cached and the serial number sort performed under a lock.
4328 Add new STACK function sk_is_sorted().
4331 *) Add Delta CRL to the extension code.
4334 *) Various fixes to s3_pkt.c so alerts are sent properly.
4335 [David Holmes <d.holmes@f5.com>]
4337 *) Reduce the chances of duplicate issuer name and serial numbers (in
4338 violation of RFC3280) using the OpenSSL certificate creation utilities.
4339 This is done by creating a random 64 bit value for the initial serial
4340 number when a serial number file is created or when a self signed
4341 certificate is created using 'openssl req -x509'. The initial serial
4342 number file is created using 'openssl x509 -next_serial' in CA.pl
4343 rather than being initialized to 1.
4346 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
4348 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
4349 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
4350 [Joe Orton, Steve Henson]
4352 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
4354 [Joe Orton, Steve Henson]
4356 *) Make it possible to have multiple active certificates with the same
4357 subject in the CA index file. This is done only if the keyword
4358 'unique_subject' is set to 'no' in the main CA section (default
4359 if 'CA_default') of the configuration file. The value is saved
4360 with the database itself in a separate index attribute file,
4361 named like the index file with '.attr' appended to the name.
4364 *) X509 verify fixes. Disable broken certificate workarounds when
4365 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
4366 keyUsage extension present. Don't accept CRLs with unhandled critical
4367 extensions: since verify currently doesn't process CRL extensions this
4368 rejects a CRL with *any* critical extensions. Add new verify error codes
4372 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
4373 A clarification of RFC2560 will require the use of OCTET STRINGs and
4374 some implementations cannot handle the current raw format. Since OpenSSL
4375 copies and compares OCSP nonces as opaque blobs without any attempt at
4376 parsing them this should not create any compatibility issues.
4379 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
4380 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
4381 this HMAC (and other) operations are several times slower than OpenSSL
4385 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
4386 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4388 *) Use the correct content when signing type "other".
4391 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
4393 *) Fix various bugs revealed by running the NISCC test suite:
4395 Stop out of bounds reads in the ASN1 code when presented with
4396 invalid tags (CVE-2003-0543 and CVE-2003-0544).
4398 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
4400 If verify callback ignores invalid public key errors don't try to check
4401 certificate signature with the NULL public key.
4405 *) New -ignore_err option in ocsp application to stop the server
4406 exiting on the first error in a request.
4409 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
4410 if the server requested one: as stated in TLS 1.0 and SSL 3.0
4414 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
4415 extra data after the compression methods not only for TLS 1.0
4416 but also for SSL 3.0 (as required by the specification).
4417 [Bodo Moeller; problem pointed out by Matthias Loepfe]
4419 *) Change X509_certificate_type() to mark the key as exported/exportable
4420 when it's 512 *bits* long, not 512 bytes.
4423 *) Change AES_cbc_encrypt() so it outputs exact multiple of
4424 blocks during encryption.
4427 *) Various fixes to base64 BIO and non blocking I/O. On write
4428 flushes were not handled properly if the BIO retried. On read
4429 data was not being buffered properly and had various logic bugs.
4430 This also affects blocking I/O when the data being decoded is a
4434 *) Various S/MIME bugfixes and compatibility changes:
4435 output correct application/pkcs7 MIME type if
4436 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
4437 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
4438 of files as .eml work). Correctly handle very long lines in MIME
4442 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
4444 *) Countermeasure against the Klima-Pokorny-Rosa extension of
4445 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
4446 a protocol version number mismatch like a decryption error
4447 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
4450 *) Turn on RSA blinding by default in the default implementation
4451 to avoid a timing attack. Applications that don't want it can call
4452 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
4453 They would be ill-advised to do so in most cases.
4454 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
4456 *) Change RSA blinding code so that it works when the PRNG is not
4457 seeded (in this case, the secret RSA exponent is abused as
4458 an unpredictable seed -- if it is not unpredictable, there
4459 is no point in blinding anyway). Make RSA blinding thread-safe
4460 by remembering the creator's thread ID in rsa->blinding and
4461 having all other threads use local one-time blinding factors
4462 (this requires more computation than sharing rsa->blinding, but
4463 avoids excessive locking; and if an RSA object is not shared
4464 between threads, blinding will still be very fast).
4467 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
4468 ENGINE as defaults for all supported algorithms irrespective of
4469 the 'flags' parameter. 'flags' is now honoured, so applications
4470 should make sure they are passing it correctly.
4473 *) Target "mingw" now allows native Windows code to be generated in
4474 the Cygwin environment as well as with the MinGW compiler.
4477 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
4479 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
4480 via timing by performing a MAC computation even if incorrrect
4481 block cipher padding has been found. This is a countermeasure
4482 against active attacks where the attacker has to distinguish
4483 between bad padding and a MAC verification error. (CVE-2003-0078)
4485 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
4486 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
4487 Martin Vuagnoux (EPFL, Ilion)]
4489 *) Make the no-err option work as intended. The intention with no-err
4490 is not to have the whole error stack handling routines removed from
4491 libcrypto, it's only intended to remove all the function name and
4492 reason texts, thereby removing some of the footprint that may not
4493 be interesting if those errors aren't displayed anyway.
4495 NOTE: it's still possible for any application or module to have it's
4496 own set of error texts inserted. The routines are there, just not
4497 used by default when no-err is given.
4500 *) Add support for FreeBSD on IA64.
4501 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
4503 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
4504 Kerberos function mit_des_cbc_cksum(). Before this change,
4505 the value returned by DES_cbc_cksum() was like the one from
4506 mit_des_cbc_cksum(), except the bytes were swapped.
4507 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
4509 *) Allow an application to disable the automatic SSL chain building.
4510 Before this a rather primitive chain build was always performed in
4511 ssl3_output_cert_chain(): an application had no way to send the
4512 correct chain if the automatic operation produced an incorrect result.
4514 Now the chain builder is disabled if either:
4516 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
4518 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
4520 The reasoning behind this is that an application would not want the
4521 auto chain building to take place if extra chain certificates are
4522 present and it might also want a means of sending no additional
4523 certificates (for example the chain has two certificates and the
4527 *) Add the possibility to build without the ENGINE framework.
4528 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
4530 *) Under Win32 gmtime() can return NULL: check return value in
4531 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
4534 *) DSA routines: under certain error conditions uninitialized BN objects
4535 could be freed. Solution: make sure initialization is performed early
4536 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
4537 Nils Larsch <nla@trustcenter.de> via PR#459)
4540 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
4541 checked on reconnect on the client side, therefore session resumption
4542 could still fail with a "ssl session id is different" error. This
4543 behaviour is masked when SSL_OP_ALL is used due to
4544 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
4545 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
4546 followup to PR #377.
4549 *) IA-32 assembler support enhancements: unified ELF targets, support
4550 for SCO/Caldera platforms, fix for Cygwin shared build.
4553 *) Add support for FreeBSD on sparc64. As a consequence, support for
4554 FreeBSD on non-x86 processors is separate from x86 processors on
4555 the config script, much like the NetBSD support.
4556 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
4558 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
4560 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
4563 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
4564 code (06) was taken as the first octet of the session ID and the last
4565 octet was ignored consequently. As a result SSLv2 client side session
4566 caching could not have worked due to the session ID mismatch between
4568 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
4572 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
4573 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
4577 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
4578 seems that in spite of existing for more than a year, many application
4579 author have done nothing to provide the necessary callbacks, which
4580 means that this particular engine will not work properly anywhere.
4581 This is a very unfortunate situation which forces us, in the name
4582 of usability, to give the hw_ncipher.c a static lock, which is part
4584 NOTE: This is for the 0.9.7 series ONLY. This hack will never
4585 appear in 0.9.8 or later. We EXPECT application authors to have
4586 dealt properly with this when 0.9.8 is released (unless we actually
4587 make such changes in the libcrypto locking code that changes will
4588 have to be made anyway).
4591 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
4592 octets have been read, EOF or an error occurs. Without this change
4593 some truncated ASN1 structures will not produce an error.
4596 *) Disable Heimdal support, since it hasn't been fully implemented.
4597 Still give the possibility to force the use of Heimdal, but with
4598 warnings and a request that patches get sent to openssl-dev.
4601 *) Add the VC-CE target, introduce the WINCE sysname, and add
4602 INSTALL.WCE and appropriate conditionals to make it build.
4603 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
4605 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
4606 cygssl-x.y.z.dll, where x, y and z are the major, minor and
4607 edit numbers of the version.
4608 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
4610 *) Introduce safe string copy and catenation functions
4611 (BUF_strlcpy() and BUF_strlcat()).
4612 [Ben Laurie (CHATS) and Richard Levitte]
4614 *) Avoid using fixed-size buffers for one-line DNs.
4615 [Ben Laurie (CHATS)]
4617 *) Add BUF_MEM_grow_clean() to avoid information leakage when
4618 resizing buffers containing secrets, and use where appropriate.
4619 [Ben Laurie (CHATS)]
4621 *) Avoid using fixed size buffers for configuration file location.
4622 [Ben Laurie (CHATS)]
4624 *) Avoid filename truncation for various CA files.
4625 [Ben Laurie (CHATS)]
4627 *) Use sizeof in preference to magic numbers.
4628 [Ben Laurie (CHATS)]
4630 *) Avoid filename truncation in cert requests.
4631 [Ben Laurie (CHATS)]
4633 *) Add assertions to check for (supposedly impossible) buffer
4635 [Ben Laurie (CHATS)]
4637 *) Don't cache truncated DNS entries in the local cache (this could
4638 potentially lead to a spoofing attack).
4639 [Ben Laurie (CHATS)]
4641 *) Fix various buffers to be large enough for hex/decimal
4642 representations in a platform independent manner.
4643 [Ben Laurie (CHATS)]
4645 *) Add CRYPTO_realloc_clean() to avoid information leakage when
4646 resizing buffers containing secrets, and use where appropriate.
4647 [Ben Laurie (CHATS)]
4649 *) Add BIO_indent() to avoid much slightly worrying code to do
4651 [Ben Laurie (CHATS)]
4653 *) Convert sprintf()/BIO_puts() to BIO_printf().
4654 [Ben Laurie (CHATS)]
4656 *) buffer_gets() could terminate with the buffer only half
4658 [Ben Laurie (CHATS)]
4660 *) Add assertions to prevent user-supplied crypto functions from
4661 overflowing internal buffers by having large block sizes, etc.
4662 [Ben Laurie (CHATS)]
4664 *) New OPENSSL_assert() macro (similar to assert(), but enabled
4666 [Ben Laurie (CHATS)]
4668 *) Eliminate unused copy of key in RC4.
4669 [Ben Laurie (CHATS)]
4671 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
4672 [Ben Laurie (CHATS)]
4674 *) Fix off-by-one error in EGD path.
4675 [Ben Laurie (CHATS)]
4677 *) If RANDFILE path is too long, ignore instead of truncating.
4678 [Ben Laurie (CHATS)]
4680 *) Eliminate unused and incorrectly sized X.509 structure
4682 [Ben Laurie (CHATS)]
4684 *) Eliminate unused and dangerous function knumber().
4685 [Ben Laurie (CHATS)]
4687 *) Eliminate unused and dangerous structure, KSSL_ERR.
4688 [Ben Laurie (CHATS)]
4690 *) Protect against overlong session ID context length in an encoded
4691 session object. Since these are local, this does not appear to be
4693 [Ben Laurie (CHATS)]
4695 *) Change from security patch (see 0.9.6e below) that did not affect
4696 the 0.9.6 release series:
4698 Remote buffer overflow in SSL3 protocol - an attacker could
4699 supply an oversized master key in Kerberos-enabled versions.
4701 [Ben Laurie (CHATS)]
4703 *) Change the SSL kerb5 codes to match RFC 2712.
4706 *) Make -nameopt work fully for req and add -reqopt switch.
4707 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
4709 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
4710 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
4712 *) Make sure tests can be performed even if the corresponding algorithms
4713 have been removed entirely. This was also the last step to make
4714 OpenSSL compilable with DJGPP under all reasonable conditions.
4715 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
4717 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
4718 to allow version independent disabling of normally unselected ciphers,
4719 which may be activated as a side-effect of selecting a single cipher.
4721 (E.g., cipher list string "RSA" enables ciphersuites that are left
4722 out of "ALL" because they do not provide symmetric encryption.
4723 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
4724 [Lutz Jaenicke, Bodo Moeller]
4726 *) Add appropriate support for separate platform-dependent build
4727 directories. The recommended way to make a platform-dependent
4728 build directory is the following (tested on Linux), maybe with
4731 # Place yourself outside of the OpenSSL source tree. In
4732 # this example, the environment variable OPENSSL_SOURCE
4733 # is assumed to contain the absolute OpenSSL source directory.
4734 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
4735 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
4736 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
4737 mkdir -p `dirname $F`
4738 ln -s $OPENSSL_SOURCE/$F $F
4741 To be absolutely sure not to disturb the source tree, a "make clean"
4742 is a good thing. If it isn't successfull, don't worry about it,
4743 it probably means the source directory is very clean.
4746 *) Make sure any ENGINE control commands make local copies of string
4747 pointers passed to them whenever necessary. Otherwise it is possible
4748 the caller may have overwritten (or deallocated) the original string
4749 data when a later ENGINE operation tries to use the stored values.
4750 [Götz Babin-Ebell <babinebell@trustcenter.de>]
4752 *) Improve diagnostics in file reading and command-line digests.
4753 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
4755 *) Add AES modes CFB and OFB to the object database. Correct an
4756 error in AES-CFB decryption.
4759 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
4760 allows existing EVP_CIPHER_CTX structures to be reused after
4761 calling EVP_*Final(). This behaviour is used by encryption
4762 BIOs and some applications. This has the side effect that
4763 applications must explicitly clean up cipher contexts with
4764 EVP_CIPHER_CTX_cleanup() or they will leak memory.
4767 *) Check the values of dna and dnb in bn_mul_recursive before calling
4768 bn_mul_comba (a non zero value means the a or b arrays do not contain
4769 n2 elements) and fallback to bn_mul_normal if either is not zero.
4772 *) Fix escaping of non-ASCII characters when using the -subj option
4773 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
4776 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
4777 form for "surname", serialNumber has no short form.
4778 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
4779 therefore remove "mail" short name for "internet 7".
4780 The OID for unique identifiers in X509 certificates is
4781 x500UniqueIdentifier, not uniqueIdentifier.
4782 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
4785 *) Add an "init" command to the ENGINE config module and auto initialize
4786 ENGINEs. Without any "init" command the ENGINE will be initialized
4787 after all ctrl commands have been executed on it. If init=1 the
4788 ENGINE is initailized at that point (ctrls before that point are run
4789 on the uninitialized ENGINE and after on the initialized one). If
4790 init=0 then the ENGINE will not be iniatialized at all.
4793 *) Fix the 'app_verify_callback' interface so that the user-defined
4794 argument is actually passed to the callback: In the
4795 SSL_CTX_set_cert_verify_callback() prototype, the callback
4796 declaration has been changed from
4799 int (*cb)(X509_STORE_CTX *,void *);
4800 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
4801 i=s->ctx->app_verify_callback(&ctx)
4802 has been changed into
4803 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
4805 To update applications using SSL_CTX_set_cert_verify_callback(),
4806 a dummy argument can be added to their callback functions.
4807 [D. K. Smetters <smetters@parc.xerox.com>]
4809 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
4810 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
4812 *) Add and OPENSSL_LOAD_CONF define which will cause
4813 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
4814 This allows older applications to transparently support certain
4815 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
4816 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
4817 load the config file and OPENSSL_add_all_algorithms_conf() which will
4818 always load it have also been added.
4821 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
4822 Adjust NIDs and EVP layer.
4823 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4825 *) Config modules support in openssl utility.
4827 Most commands now load modules from the config file,
4828 though in a few (such as version) this isn't done
4829 because it couldn't be used for anything.
4831 In the case of ca and req the config file used is
4832 the same as the utility itself: that is the -config
4833 command line option can be used to specify an
4837 *) Move default behaviour from OPENSSL_config(). If appname is NULL
4838 use "openssl_conf" if filename is NULL use default openssl config file.
4841 *) Add an argument to OPENSSL_config() to allow the use of an alternative
4842 config section name. Add a new flag to tolerate a missing config file
4843 and move code to CONF_modules_load_file().
4846 *) Support for crypto accelerator cards from Accelerated Encryption
4847 Processing, www.aep.ie. (Use engine 'aep')
4848 The support was copied from 0.9.6c [engine] and adapted/corrected
4849 to work with the new engine framework.
4850 [AEP Inc. and Richard Levitte]
4852 *) Support for SureWare crypto accelerator cards from Baltimore
4853 Technologies. (Use engine 'sureware')
4854 The support was copied from 0.9.6c [engine] and adapted
4855 to work with the new engine framework.
4858 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
4859 make the newer ENGINE framework commands for the CHIL engine work.
4860 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
4862 *) Make it possible to produce shared libraries on ReliantUNIX.
4863 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
4865 *) Add the configuration target debug-linux-ppro.
4866 Make 'openssl rsa' use the general key loading routines
4867 implemented in apps.c, and make those routines able to
4868 handle the key format FORMAT_NETSCAPE and the variant
4870 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4872 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4873 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4875 *) Add -keyform to rsautl, and document -engine.
4876 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
4878 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
4879 BIO_R_NO_SUCH_FILE error code rather than the generic
4880 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
4883 *) Add new functions
4885 ERR_peek_last_error_line
4886 ERR_peek_last_error_line_data.
4887 These are similar to
4890 ERR_peek_error_line_data,
4891 but report on the latest error recorded rather than the first one
4892 still in the error queue.
4893 [Ben Laurie, Bodo Moeller]
4895 *) default_algorithms option in ENGINE config module. This allows things
4897 default_algorithms = ALL
4898 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
4901 *) Prelminary ENGINE config module.
4904 *) New experimental application configuration code.
4907 *) Change the AES code to follow the same name structure as all other
4908 symmetric ciphers, and behave the same way. Move everything to
4909 the directory crypto/aes, thereby obsoleting crypto/rijndael.
4910 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4912 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
4913 [Ben Laurie and Theo de Raadt]
4915 *) Add option to output public keys in req command.
4916 [Massimiliano Pala madwolf@openca.org]
4918 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
4919 (up to about 10% better than before for P-192 and P-224).
4922 *) New functions/macros
4924 SSL_CTX_set_msg_callback(ctx, cb)
4925 SSL_CTX_set_msg_callback_arg(ctx, arg)
4926 SSL_set_msg_callback(ssl, cb)
4927 SSL_set_msg_callback_arg(ssl, arg)
4929 to request calling a callback function
4931 void cb(int write_p, int version, int content_type,
4932 const void *buf, size_t len, SSL *ssl, void *arg)
4934 whenever a protocol message has been completely received
4935 (write_p == 0) or sent (write_p == 1). Here 'version' is the
4936 protocol version according to which the SSL library interprets
4937 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
4938 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
4939 the content type as defined in the SSL 3.0/TLS 1.0 protocol
4940 specification (change_cipher_spec(20), alert(21), handshake(22)).
4941 'buf' and 'len' point to the actual message, 'ssl' to the
4942 SSL object, and 'arg' is the application-defined value set by
4943 SSL[_CTX]_set_msg_callback_arg().
4945 'openssl s_client' and 'openssl s_server' have new '-msg' options
4946 to enable a callback that displays all protocol messages.
4949 *) Change the shared library support so shared libraries are built as
4950 soon as the corresponding static library is finished, and thereby get
4951 openssl and the test programs linked against the shared library.
4952 This still only happens when the keyword "shard" has been given to
4953 the configuration scripts.
4955 NOTE: shared library support is still an experimental thing, and
4956 backward binary compatibility is still not guaranteed.
4957 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
4959 *) Add support for Subject Information Access extension.
4960 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4962 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
4963 additional bytes when new memory had to be allocated, not just
4964 when reusing an existing buffer.
4967 *) New command line and configuration option 'utf8' for the req command.
4968 This allows field values to be specified as UTF8 strings.
4971 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
4972 runs for the former and machine-readable output for the latter.
4975 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
4976 of the e-mail address in the DN (i.e., it will go into a certificate
4977 extension only). The new configuration file option 'email_in_dn = no'
4978 has the same effect.
4979 [Massimiliano Pala madwolf@openca.org]
4981 *) Change all functions with names starting with des_ to be starting
4982 with DES_ instead. Add wrappers that are compatible with libdes,
4983 but are named _ossl_old_des_*. Finally, add macros that map the
4984 des_* symbols to the corresponding _ossl_old_des_* if libdes
4985 compatibility is desired. If OpenSSL 0.9.6c compatibility is
4986 desired, the des_* symbols will be mapped to DES_*, with one
4989 Since we provide two compatibility mappings, the user needs to
4990 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
4991 compatibility is desired. The default (i.e., when that macro
4992 isn't defined) is OpenSSL 0.9.6c compatibility.
4994 There are also macros that enable and disable the support of old
4995 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
4996 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
4997 are defined, the default will apply: to support the old des routines.
4999 In either case, one must include openssl/des.h to get the correct
5000 definitions. Do not try to just include openssl/des_old.h, that
5003 NOTE: This is a major break of an old API into a new one. Software
5004 authors are encouraged to switch to the DES_ style functions. Some
5005 time in the future, des_old.h and the libdes compatibility functions
5006 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
5007 default), and then completely removed.
5010 *) Test for certificates which contain unsupported critical extensions.
5011 If such a certificate is found during a verify operation it is
5012 rejected by default: this behaviour can be overridden by either
5013 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
5014 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
5015 X509_supported_extension() has also been added which returns 1 if a
5016 particular extension is supported.
5019 *) Modify the behaviour of EVP cipher functions in similar way to digests
5020 to retain compatibility with existing code.
5023 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
5024 compatibility with existing code. In particular the 'ctx' parameter does
5025 not have to be to be initialized before the call to EVP_DigestInit() and
5026 it is tidied up after a call to EVP_DigestFinal(). New function
5027 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
5028 EVP_MD_CTX_copy() changed to not require the destination to be
5029 initialized valid and new function EVP_MD_CTX_copy_ex() added which
5030 requires the destination to be valid.
5032 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
5033 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
5036 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
5037 so that complete 'Handshake' protocol structures are kept in memory
5038 instead of overwriting 'msg_type' and 'length' with 'body' data.
5041 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
5042 [Massimo Santin via Richard Levitte]
5044 *) Major restructuring to the underlying ENGINE code. This includes
5045 reduction of linker bloat, separation of pure "ENGINE" manipulation
5046 (initialisation, etc) from functionality dealing with implementations
5047 of specific crypto iterfaces. This change also introduces integrated
5048 support for symmetric ciphers and digest implementations - so ENGINEs
5049 can now accelerate these by providing EVP_CIPHER and EVP_MD
5050 implementations of their own. This is detailed in crypto/engine/README
5051 as it couldn't be adequately described here. However, there are a few
5052 API changes worth noting - some RSA, DSA, DH, and RAND functions that
5053 were changed in the original introduction of ENGINE code have now
5054 reverted back - the hooking from this code to ENGINE is now a good
5055 deal more passive and at run-time, operations deal directly with
5056 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
5057 dereferencing through an ENGINE pointer any more. Also, the ENGINE
5058 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
5059 they were not being used by the framework as there is no concept of a
5060 BIGNUM_METHOD and they could not be generalised to the new
5061 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
5062 ENGINE_cpy() has been removed as it cannot be consistently defined in
5066 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
5069 *) Change mkdef.pl to sort symbols that get the same entry number,
5070 and make sure the automatically generated functions ERR_load_*
5071 become part of libeay.num as well.
5074 *) New function SSL_renegotiate_pending(). This returns true once
5075 renegotiation has been requested (either SSL_renegotiate() call
5076 or HelloRequest/ClientHello receveived from the peer) and becomes
5077 false once a handshake has been completed.
5078 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
5079 sends a HelloRequest, but does not ensure that a handshake takes
5080 place. SSL_renegotiate_pending() is useful for checking if the
5081 client has followed the request.)
5084 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
5085 By default, clients may request session resumption even during
5086 renegotiation (if session ID contexts permit); with this option,
5087 session resumption is possible only in the first handshake.
5089 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
5090 more bits available for options that should not be part of
5091 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
5094 *) Add some demos for certificate and certificate request creation.
5097 *) Make maximum certificate chain size accepted from the peer application
5098 settable (SSL*_get/set_max_cert_list()), as proposed by
5099 "Douglas E. Engert" <deengert@anl.gov>.
5102 *) Add support for shared libraries for Unixware-7
5103 (Boyd Lynn Gerber <gerberb@zenez.com>).
5106 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
5107 be done prior to destruction. Use this to unload error strings from
5108 ENGINEs that load their own error strings. NB: This adds two new API
5109 functions to "get" and "set" this destroy handler in an ENGINE.
5112 *) Alter all existing ENGINE implementations (except "openssl" and
5113 "openbsd") to dynamically instantiate their own error strings. This
5114 makes them more flexible to be built both as statically-linked ENGINEs
5115 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
5116 Also, add stub code to each that makes building them as self-contained
5117 shared-libraries easier (see README.ENGINE).
5120 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
5121 implementations into applications that are completely implemented in
5122 self-contained shared-libraries. The "dynamic" ENGINE exposes control
5123 commands that can be used to configure what shared-library to load and
5124 to control aspects of the way it is handled. Also, made an update to
5125 the README.ENGINE file that brings its information up-to-date and
5126 provides some information and instructions on the "dynamic" ENGINE
5127 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
5130 *) Make it possible to unload ranges of ERR strings with a new
5131 "ERR_unload_strings" function.
5134 *) Add a copy() function to EVP_MD.
5137 *) Make EVP_MD routines take a context pointer instead of just the
5138 md_data void pointer.
5141 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
5142 that the digest can only process a single chunk of data
5143 (typically because it is provided by a piece of
5144 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
5145 is only going to provide a single chunk of data, and hence the
5146 framework needn't accumulate the data for oneshot drivers.
5149 *) As with "ERR", make it possible to replace the underlying "ex_data"
5150 functions. This change also alters the storage and management of global
5151 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
5152 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
5153 index counters. The API functions that use this state have been changed
5154 to take a "class_index" rather than pointers to the class's local STACK
5155 and counter, and there is now an API function to dynamically create new
5156 classes. This centralisation allows us to (a) plug a lot of the
5157 thread-safety problems that existed, and (b) makes it possible to clean
5158 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
5159 such data would previously have always leaked in application code and
5160 workarounds were in place to make the memory debugging turn a blind eye
5161 to it. Application code that doesn't use this new function will still
5162 leak as before, but their memory debugging output will announce it now
5163 rather than letting it slide.
5165 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
5166 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
5167 has a return value to indicate success or failure.
5170 *) Make it possible to replace the underlying "ERR" functions such that the
5171 global state (2 LHASH tables and 2 locks) is only used by the "default"
5172 implementation. This change also adds two functions to "get" and "set"
5173 the implementation prior to it being automatically set the first time
5174 any other ERR function takes place. Ie. an application can call "get",
5175 pass the return value to a module it has just loaded, and that module
5176 can call its own "set" function using that value. This means the
5177 module's "ERR" operations will use (and modify) the error state in the
5178 application and not in its own statically linked copy of OpenSSL code.
5181 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
5182 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
5183 the operation, and provides a more encapsulated way for external code
5184 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
5185 to use these functions rather than manually incrementing the counts.
5187 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
5190 *) Add EVP test program.
5193 *) Add symmetric cipher support to ENGINE. Expect the API to change!
5196 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
5197 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
5198 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
5199 These allow a CRL to be built without having to access X509_CRL fields
5200 directly. Modify 'ca' application to use new functions.
5203 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
5204 bug workarounds. Rollback attack detection is a security feature.
5205 The problem will only arise on OpenSSL servers when TLSv1 is not
5206 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
5207 Software authors not wanting to support TLSv1 will have special reasons
5208 for their choice and can explicitly enable this option.
5209 [Bodo Moeller, Lutz Jaenicke]
5211 *) Rationalise EVP so it can be extended: don't include a union of
5212 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
5213 (similar to those existing for EVP_CIPHER_CTX).
5218 EVP_MD_CTX_init(&md); /* new function call */
5219 EVP_DigestInit(&md, EVP_sha1());
5220 EVP_DigestUpdate(&md, in, len);
5221 EVP_DigestFinal(&md, out, NULL);
5222 EVP_MD_CTX_cleanup(&md); /* new function call */
5226 *) Make DES key schedule conform to the usual scheme, as well as
5227 correcting its structure. This means that calls to DES functions
5228 now have to pass a pointer to a des_key_schedule instead of a
5229 plain des_key_schedule (which was actually always a pointer
5232 des_key_schedule ks;
5234 des_set_key_checked(..., &ks);
5235 des_ncbc_encrypt(..., &ks, ...);
5237 (Note that a later change renames 'des_...' into 'DES_...'.)
5240 *) Initial reduction of linker bloat: the use of some functions, such as
5241 PEM causes large amounts of unused functions to be linked in due to
5242 poor organisation. For example pem_all.c contains every PEM function
5243 which has a knock on effect of linking in large amounts of (unused)
5244 ASN1 code. Grouping together similar functions and splitting unrelated
5245 functions prevents this.
5248 *) Cleanup of EVP macros.
5251 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
5252 correct _ecb suffix.
5255 *) Add initial OCSP responder support to ocsp application. The
5256 revocation information is handled using the text based index
5257 use by the ca application. The responder can either handle
5258 requests generated internally, supplied in files (for example
5259 via a CGI script) or using an internal minimal server.
5262 *) Add configuration choices to get zlib compression for TLS.
5265 *) Changes to Kerberos SSL for RFC 2712 compliance:
5266 1. Implemented real KerberosWrapper, instead of just using
5267 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
5268 2. Implemented optional authenticator field of KerberosWrapper.
5270 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
5271 and authenticator structs; see crypto/krb5/.
5273 Generalized Kerberos calls to support multiple Kerberos libraries.
5274 [Vern Staats <staatsvr@asc.hpc.mil>,
5275 Jeffrey Altman <jaltman@columbia.edu>
5276 via Richard Levitte]
5278 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
5279 already does with RSA. testdsa.h now has 'priv_key/pub_key'
5280 values for each of the key sizes rather than having just
5281 parameters (and 'speed' generating keys each time).
5284 *) Speed up EVP routines.
5287 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
5288 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
5289 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
5290 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
5292 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
5293 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
5294 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
5297 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
5299 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
5302 *) Added the OS2-EMX target.
5303 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
5305 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
5306 to support NCONF routines in extension code. New function CONF_set_nconf()
5307 to allow functions which take an NCONF to also handle the old LHASH
5308 structure: this means that the old CONF compatible routines can be
5309 retained (in particular wrt extensions) without having to duplicate the
5310 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
5313 *) Enhance the general user interface with mechanisms for inner control
5314 and with possibilities to have yes/no kind of prompts.
5317 *) Change all calls to low level digest routines in the library and
5318 applications to use EVP. Add missing calls to HMAC_cleanup() and
5319 don't assume HMAC_CTX can be copied using memcpy().
5320 [Verdon Walker <VWalker@novell.com>, Steve Henson]
5322 *) Add the possibility to control engines through control names but with
5323 arbitrary arguments instead of just a string.
5324 Change the key loaders to take a UI_METHOD instead of a callback
5325 function pointer. NOTE: this breaks binary compatibility with earlier
5326 versions of OpenSSL [engine].
5327 Adapt the nCipher code for these new conditions and add a card insertion
5331 *) Enhance the general user interface with mechanisms to better support
5332 dialog box interfaces, application-defined prompts, the possibility
5333 to use defaults (for example default passwords from somewhere else)
5334 and interrupts/cancellations.
5337 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
5338 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
5341 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
5342 tidy up some unnecessarily weird code in 'sk_new()').
5343 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
5345 *) Change the key loading routines for ENGINEs to use the same kind
5346 callback (pem_password_cb) as all other routines that need this
5350 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
5351 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
5352 than this minimum value is recommended.
5355 *) New random seeder for OpenVMS, using the system process statistics
5356 that are easily reachable.
5359 *) Windows apparently can't transparently handle global
5360 variables defined in DLLs. Initialisations such as:
5362 const ASN1_ITEM *it = &ASN1_INTEGER_it;
5364 wont compile. This is used by the any applications that need to
5365 declare their own ASN1 modules. This was fixed by adding the option
5366 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
5367 needed for static libraries under Win32.
5370 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
5371 setting of purpose and trust fields. New X509_STORE trust and
5372 purpose functions and tidy up setting in other SSL functions.
5375 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
5376 structure. These are inherited by X509_STORE_CTX when it is
5377 initialised. This allows various defaults to be set in the
5378 X509_STORE structure (such as flags for CRL checking and custom
5379 purpose or trust settings) for functions which only use X509_STORE_CTX
5380 internally such as S/MIME.
5382 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
5383 trust settings if they are not set in X509_STORE. This allows X509_STORE
5384 purposes and trust (in S/MIME for example) to override any set by default.
5386 Add command line options for CRL checking to smime, s_client and s_server
5390 *) Initial CRL based revocation checking. If the CRL checking flag(s)
5391 are set then the CRL is looked up in the X509_STORE structure and
5392 its validity and signature checked, then if the certificate is found
5393 in the CRL the verify fails with a revoked error.
5395 Various new CRL related callbacks added to X509_STORE_CTX structure.
5397 Command line options added to 'verify' application to support this.
5399 This needs some additional work, such as being able to handle multiple
5400 CRLs with different times, extension based lookup (rather than just
5401 by subject name) and ultimately more complete V2 CRL extension
5405 *) Add a general user interface API (crypto/ui/). This is designed
5406 to replace things like des_read_password and friends (backward
5407 compatibility functions using this new API are provided).
5408 The purpose is to remove prompting functions from the DES code
5409 section as well as provide for prompting through dialog boxes in
5410 a window system and the like.
5413 *) Add "ex_data" support to ENGINE so implementations can add state at a
5414 per-structure level rather than having to store it globally.
5417 *) Make it possible for ENGINE structures to be copied when retrieved by
5418 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
5419 This causes the "original" ENGINE structure to act like a template,
5420 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
5421 operational state can be localised to each ENGINE structure, despite the
5422 fact they all share the same "methods". New ENGINE structures returned in
5423 this case have no functional references and the return value is the single
5424 structural reference. This matches the single structural reference returned
5425 by ENGINE_by_id() normally, when it is incremented on the pre-existing
5429 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
5430 needs to match any other type at all we need to manually clear the
5434 *) Changes to the "openssl engine" utility to include;
5435 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
5436 about an ENGINE's available control commands.
5437 - executing control commands from command line arguments using the
5438 '-pre' and '-post' switches. '-post' is only used if '-t' is
5439 specified and the ENGINE is successfully initialised. The syntax for
5440 the individual commands are colon-separated, for example;
5441 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
5444 *) New dynamic control command support for ENGINEs. ENGINEs can now
5445 declare their own commands (numbers), names (strings), descriptions,
5446 and input types for run-time discovery by calling applications. A
5447 subset of these commands are implicitly classed as "executable"
5448 depending on their input type, and only these can be invoked through
5449 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
5450 can be based on user input, config files, etc). The distinction is
5451 that "executable" commands cannot return anything other than a boolean
5452 result and can only support numeric or string input, whereas some
5453 discoverable commands may only be for direct use through
5454 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
5455 pointers, or other custom uses. The "executable" commands are to
5456 support parameterisations of ENGINE behaviour that can be
5457 unambiguously defined by ENGINEs and used consistently across any
5458 OpenSSL-based application. Commands have been added to all the
5459 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
5460 control over shared-library paths without source code alterations.
5463 *) Changed all ENGINE implementations to dynamically allocate their
5464 ENGINEs rather than declaring them statically. Apart from this being
5465 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
5466 this also allows the implementations to compile without using the
5467 internal engine_int.h header.
5470 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
5471 'const' value. Any code that should be able to modify a RAND_METHOD
5472 should already have non-const pointers to it (ie. they should only
5473 modify their own ones).
5476 *) Made a variety of little tweaks to the ENGINE code.
5477 - "atalla" and "ubsec" string definitions were moved from header files
5478 to C code. "nuron" string definitions were placed in variables
5479 rather than hard-coded - allowing parameterisation of these values
5480 later on via ctrl() commands.
5481 - Removed unused "#if 0"'d code.
5482 - Fixed engine list iteration code so it uses ENGINE_free() to release
5483 structural references.
5484 - Constified the RAND_METHOD element of ENGINE structures.
5485 - Constified various get/set functions as appropriate and added
5486 missing functions (including a catch-all ENGINE_cpy that duplicates
5487 all ENGINE values onto a new ENGINE except reference counts/state).
5488 - Removed NULL parameter checks in get/set functions. Setting a method
5489 or function to NULL is a way of cancelling out a previously set
5490 value. Passing a NULL ENGINE parameter is just plain stupid anyway
5491 and doesn't justify the extra error symbols and code.
5492 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
5493 flags from engine_int.h to engine.h.
5494 - Changed prototypes for ENGINE handler functions (init(), finish(),
5495 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
5498 *) Implement binary inversion algorithm for BN_mod_inverse in addition
5499 to the algorithm using long division. The binary algorithm can be
5500 used only if the modulus is odd. On 32-bit systems, it is faster
5501 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
5502 roughly 5-15% for 256-bit moduli), so we use it only for moduli
5503 up to 450 bits. In 64-bit environments, the binary algorithm
5504 appears to be advantageous for much longer moduli; here we use it
5505 for moduli up to 2048 bits.
5508 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
5509 could not support the combine flag in choice fields.
5512 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
5513 extensions from a certificate request to the certificate.
5516 *) Allow multiple 'certopt' and 'nameopt' options to be separated
5517 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
5518 file: this allows the display of the certificate about to be
5519 signed to be customised, to allow certain fields to be included
5520 or excluded and extension details. The old system didn't display
5521 multicharacter strings properly, omitted fields not in the policy
5522 and couldn't display additional details such as extensions.
5525 *) Function EC_POINTs_mul for multiple scalar multiplication
5526 of an arbitrary number of elliptic curve points
5527 \sum scalars[i]*points[i],
5528 optionally including the generator defined for the EC_GROUP:
5529 scalar*generator + \sum scalars[i]*points[i].
5531 EC_POINT_mul is a simple wrapper function for the typical case
5532 that the point list has just one item (besides the optional
5536 *) First EC_METHODs for curves over GF(p):
5538 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
5539 operations and provides various method functions that can also
5540 operate with faster implementations of modular arithmetic.
5542 EC_GFp_mont_method() reuses most functions that are part of
5543 EC_GFp_simple_method, but uses Montgomery arithmetic.
5545 [Bodo Moeller; point addition and point doubling
5546 implementation directly derived from source code provided by
5547 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
5549 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
5550 crypto/ec/ec_lib.c):
5552 Curves are EC_GROUP objects (with an optional group generator)
5553 based on EC_METHODs that are built into the library.
5555 Points are EC_POINT objects based on EC_GROUP objects.
5557 Most of the framework would be able to handle curves over arbitrary
5558 finite fields, but as there are no obvious types for fields other
5559 than GF(p), some functions are limited to that for now.
5562 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
5563 that the file contains a complete HTTP response.
5566 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
5567 change the def and num file printf format specifier from "%-40sXXX"
5568 to "%-39s XXX". The latter will always guarantee a space after the
5569 field while the former will cause them to run together if the field
5570 is 40 of more characters long.
5573 *) Constify the cipher and digest 'method' functions and structures
5574 and modify related functions to take constant EVP_MD and EVP_CIPHER
5578 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
5579 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
5582 *) Modify EVP_Digest*() routines so they now return values. Although the
5583 internal software routines can never fail additional hardware versions
5587 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
5589 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
5590 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
5593 ERR_R_NESTED_ASN1_ERROR
5595 ERR_R_MISSING_ASN1_EOS
5596 were 4 .. 9, conflicting with
5597 ERR_LIB_RSA (= ERR_R_RSA_LIB)
5599 ERR_LIB_PEM (= ERR_R_PEM_LIB).
5600 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
5602 Add new error code 'ERR_R_INTERNAL_ERROR'.
5605 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
5609 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
5610 sets the subject name for a new request or supersedes the
5611 subject name in a given request. Formats that can be parsed are
5612 'CN=Some Name, OU=myOU, C=IT'
5614 'CN=Some Name/OU=myOU/C=IT'.
5616 Add options '-batch' and '-verbose' to 'openssl req'.
5617 [Massimiliano Pala <madwolf@hackmasters.net>]
5619 *) Introduce the possibility to access global variables through
5620 functions on platform were that's the best way to handle exporting
5621 global variables in shared libraries. To enable this functionality,
5622 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
5623 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
5624 is normally done by Configure or something similar).
5626 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
5627 in the source file (foo.c) like this:
5629 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
5630 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
5632 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
5633 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
5635 OPENSSL_DECLARE_GLOBAL(int,foo);
5636 #define foo OPENSSL_GLOBAL_REF(foo)
5637 OPENSSL_DECLARE_GLOBAL(double,bar);
5638 #define bar OPENSSL_GLOBAL_REF(bar)
5640 The #defines are very important, and therefore so is including the
5641 header file everywhere where the defined globals are used.
5643 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
5644 of ASN.1 items, but that structure is a bit different.
5646 The largest change is in util/mkdef.pl which has been enhanced with
5647 better and easier to understand logic to choose which symbols should
5648 go into the Windows .def files as well as a number of fixes and code
5649 cleanup (among others, algorithm keywords are now sorted
5650 lexicographically to avoid constant rewrites).
5653 *) In BN_div() keep a copy of the sign of 'num' before writing the
5654 result to 'rm' because if rm==num the value will be overwritten
5655 and produce the wrong result if 'num' is negative: this caused
5656 problems with BN_mod() and BN_nnmod().
5659 *) Function OCSP_request_verify(). This checks the signature on an
5660 OCSP request and verifies the signer certificate. The signer
5661 certificate is just checked for a generic purpose and OCSP request
5665 *) Add OCSP_check_validity() function to check the validity of OCSP
5666 responses. OCSP responses are prepared in real time and may only
5667 be a few seconds old. Simply checking that the current time lies
5668 between thisUpdate and nextUpdate max reject otherwise valid responses
5669 caused by either OCSP responder or client clock inaccuracy. Instead
5670 we allow thisUpdate and nextUpdate to fall within a certain period of
5671 the current time. The age of the response can also optionally be
5672 checked. Two new options -validity_period and -status_age added to
5676 *) If signature or public key algorithm is unrecognized print out its
5677 OID rather that just UNKNOWN.
5680 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
5681 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
5682 ID to be generated from the issuer certificate alone which can then be
5683 passed to OCSP_id_issuer_cmp().
5686 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
5687 ASN1 modules to export functions returning ASN1_ITEM pointers
5688 instead of the ASN1_ITEM structures themselves. This adds several
5689 new macros which allow the underlying ASN1 function/structure to
5690 be accessed transparently. As a result code should not use ASN1_ITEM
5691 references directly (such as &X509_it) but instead use the relevant
5692 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
5693 use of the new ASN1 code on platforms where exporting structures
5694 is problematical (for example in shared libraries) but exporting
5695 functions returning pointers to structures is not.
5698 *) Add support for overriding the generation of SSL/TLS session IDs.
5699 These callbacks can be registered either in an SSL_CTX or per SSL.
5700 The purpose of this is to allow applications to control, if they wish,
5701 the arbitrary values chosen for use as session IDs, particularly as it
5702 can be useful for session caching in multiple-server environments. A
5703 command-line switch for testing this (and any client code that wishes
5704 to use such a feature) has been added to "s_server".
5705 [Geoff Thorpe, Lutz Jaenicke]
5707 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
5708 of the form '#if defined(...) || defined(...) || ...' and
5709 '#if !defined(...) && !defined(...) && ...'. This also avoids
5710 the growing number of special cases it was previously handling.
5713 *) Make all configuration macros available for application by making
5714 sure they are available in opensslconf.h, by giving them names starting
5715 with "OPENSSL_" to avoid conflicts with other packages and by making
5716 sure e_os2.h will cover all platform-specific cases together with
5718 Additionally, it is now possible to define configuration/platform-
5719 specific names (called "system identities"). In the C code, these
5720 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
5721 macro with the name beginning with "OPENSSL_SYS_", which is determined
5722 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
5726 *) New option -set_serial to 'req' and 'x509' this allows the serial
5727 number to use to be specified on the command line. Previously self
5728 signed certificates were hard coded with serial number 0 and the
5729 CA options of 'x509' had to use a serial number in a file which was
5733 *) New options to 'ca' utility to support V2 CRL entry extensions.
5734 Currently CRL reason, invalidity date and hold instruction are
5735 supported. Add new CRL extensions to V3 code and some new objects.
5738 *) New function EVP_CIPHER_CTX_set_padding() this is used to
5739 disable standard block padding (aka PKCS#5 padding) in the EVP
5740 API, which was previously mandatory. This means that the data is
5741 not padded in any way and so the total length much be a multiple
5742 of the block size, otherwise an error occurs.
5745 *) Initial (incomplete) OCSP SSL support.
5748 *) New function OCSP_parse_url(). This splits up a URL into its host,
5749 port and path components: primarily to parse OCSP URLs. New -url
5750 option to ocsp utility.
5753 *) New nonce behavior. The return value of OCSP_check_nonce() now
5754 reflects the various checks performed. Applications can decide
5755 whether to tolerate certain situations such as an absent nonce
5756 in a response when one was present in a request: the ocsp application
5757 just prints out a warning. New function OCSP_add1_basic_nonce()
5758 this is to allow responders to include a nonce in a response even if
5759 the request is nonce-less.
5762 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
5763 skipped when using openssl x509 multiple times on a single input file,
5764 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
5767 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
5768 set string type: to handle setting ASN1_TIME structures. Fix ca
5769 utility to correctly initialize revocation date of CRLs.
5772 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
5773 the clients preferred ciphersuites and rather use its own preferences.
5774 Should help to work around M$ SGC (Server Gated Cryptography) bug in
5775 Internet Explorer by ensuring unchanged hash method during stepup.
5776 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
5779 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
5780 to aes and add a new 'exist' option to print out symbols that don't
5784 *) Additional options to ocsp utility to allow flags to be set and
5785 additional certificates supplied.
5788 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
5789 OCSP client a number of certificate to only verify the response
5793 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
5794 handle the new API. Currently only ECB, CBC modes supported. Add new
5797 Add TLS AES ciphersuites as described in RFC3268, "Advanced
5798 Encryption Standard (AES) Ciphersuites for Transport Layer
5799 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
5800 not enabled by default and were not part of the "ALL" ciphersuite
5801 alias because they were not yet official; they could be
5802 explicitly requested by specifying the "AESdraft" ciphersuite
5803 group alias. In the final release of OpenSSL 0.9.7, the group
5804 alias is called "AES" and is part of "ALL".)
5805 [Ben Laurie, Steve Henson, Bodo Moeller]
5807 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
5808 request to response.
5811 *) Functions for OCSP responders. OCSP_request_onereq_count(),
5812 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
5813 extract information from a certificate request. OCSP_response_create()
5814 creates a response and optionally adds a basic response structure.
5815 OCSP_basic_add1_status() adds a complete single response to a basic
5816 response and returns the OCSP_SINGLERESP structure just added (to allow
5817 extensions to be included for example). OCSP_basic_add1_cert() adds a
5818 certificate to a basic response and OCSP_basic_sign() signs a basic
5819 response with various flags. New helper functions ASN1_TIME_check()
5820 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
5821 (converts ASN1_TIME to GeneralizedTime).
5824 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
5825 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
5826 structure from a certificate. X509_pubkey_digest() digests the public_key
5827 contents: this is used in various key identifiers.
5830 *) Make sk_sort() tolerate a NULL argument.
5831 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
5833 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
5834 passed by the function are trusted implicitly. If any of them signed the
5835 response then it is assumed to be valid and is not verified.
5838 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
5839 to data. This was previously part of the PKCS7 ASN1 code. This
5840 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
5841 [Steve Henson, reported by Kenneth R. Robinette
5842 <support@securenetterm.com>]
5844 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
5845 routines: without these tracing memory leaks is very painful.
5846 Fix leaks in PKCS12 and PKCS7 routines.
5849 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
5850 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
5851 effectively meant GeneralizedTime would never be used. Now it
5852 is initialised to -1 but X509_time_adj() now has to check the value
5853 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
5854 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
5855 [Steve Henson, reported by Kenneth R. Robinette
5856 <support@securenetterm.com>]
5858 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
5859 result in a zero length in the ASN1_INTEGER structure which was
5860 not consistent with the structure when d2i_ASN1_INTEGER() was used
5861 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
5862 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
5863 where it did not print out a minus for negative ASN1_INTEGER.
5866 *) Add summary printout to ocsp utility. The various functions which
5867 convert status values to strings have been renamed to:
5868 OCSP_response_status_str(), OCSP_cert_status_str() and
5869 OCSP_crl_reason_str() and are no longer static. New options
5870 to verify nonce values and to disable verification. OCSP response
5871 printout format cleaned up.
5874 *) Add additional OCSP certificate checks. These are those specified
5875 in RFC2560. This consists of two separate checks: the CA of the
5876 certificate being checked must either be the OCSP signer certificate
5877 or the issuer of the OCSP signer certificate. In the latter case the
5878 OCSP signer certificate must contain the OCSP signing extended key
5879 usage. This check is performed by attempting to match the OCSP
5880 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
5881 in the OCSP_CERTID structures of the response.
5884 *) Initial OCSP certificate verification added to OCSP_basic_verify()
5885 and related routines. This uses the standard OpenSSL certificate
5886 verify routines to perform initial checks (just CA validity) and
5887 to obtain the certificate chain. Then additional checks will be
5888 performed on the chain. Currently the root CA is checked to see
5889 if it is explicitly trusted for OCSP signing. This is used to set
5890 a root CA as a global signing root: that is any certificate that
5891 chains to that CA is an acceptable OCSP signing certificate.
5894 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
5895 extensions from a separate configuration file.
5896 As when reading extensions from the main configuration file,
5897 the '-extensions ...' option may be used for specifying the
5899 [Massimiliano Pala <madwolf@comune.modena.it>]
5901 *) New OCSP utility. Allows OCSP requests to be generated or
5902 read. The request can be sent to a responder and the output
5903 parsed, outputed or printed in text form. Not complete yet:
5904 still needs to check the OCSP response validity.
5907 *) New subcommands for 'openssl ca':
5908 'openssl ca -status <serial>' prints the status of the cert with
5909 the given serial number (according to the index file).
5910 'openssl ca -updatedb' updates the expiry status of certificates
5912 [Massimiliano Pala <madwolf@comune.modena.it>]
5914 *) New '-newreq-nodes' command option to CA.pl. This is like
5915 '-newreq', but calls 'openssl req' with the '-nodes' option
5916 so that the resulting key is not encrypted.
5917 [Damien Miller <djm@mindrot.org>]
5919 *) New configuration for the GNU Hurd.
5920 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
5922 *) Initial code to implement OCSP basic response verify. This
5923 is currently incomplete. Currently just finds the signer's
5924 certificate and verifies the signature on the response.
5927 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
5928 value of OPENSSLDIR. This is available via the new '-d' option
5929 to 'openssl version', and is also included in 'openssl version -a'.
5932 *) Allowing defining memory allocation callbacks that will be given
5933 file name and line number information in additional arguments
5934 (a const char* and an int). The basic functionality remains, as
5935 well as the original possibility to just replace malloc(),
5936 realloc() and free() by functions that do not know about these
5937 additional arguments. To register and find out the current
5938 settings for extended allocation functions, the following
5939 functions are provided:
5941 CRYPTO_set_mem_ex_functions
5942 CRYPTO_set_locked_mem_ex_functions
5943 CRYPTO_get_mem_ex_functions
5944 CRYPTO_get_locked_mem_ex_functions
5946 These work the same way as CRYPTO_set_mem_functions and friends.
5947 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
5948 extended allocation function is enabled.
5949 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
5950 a conventional allocation function is enabled.
5951 [Richard Levitte, Bodo Moeller]
5953 *) Finish off removing the remaining LHASH function pointer casts.
5954 There should no longer be any prototype-casting required when using
5955 the LHASH abstraction, and any casts that remain are "bugs". See
5956 the callback types and macros at the head of lhash.h for details
5957 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
5960 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
5961 If /dev/[u]random devices are not available or do not return enough
5962 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
5964 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
5965 /etc/entropy will be queried once each in this sequence, quering stops
5966 when enough entropy was collected without querying more sockets.
5969 *) Change the Unix RAND_poll() variant to be able to poll several
5970 random devices, as specified by DEVRANDOM, until a sufficient amount
5971 of data has been collected. We spend at most 10 ms on each file
5972 (select timeout) and read in non-blocking mode. DEVRANDOM now
5973 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
5974 (previously it was just the string "/dev/urandom"), so on typical
5975 platforms the 10 ms delay will never occur.
5976 Also separate out the Unix variant to its own file, rand_unix.c.
5977 For VMS, there's a currently-empty rand_vms.c.
5980 *) Move OCSP client related routines to ocsp_cl.c. These
5981 provide utility functions which an application needing
5982 to issue a request to an OCSP responder and analyse the
5983 response will typically need: as opposed to those which an
5984 OCSP responder itself would need which will be added later.
5986 OCSP_request_sign() signs an OCSP request with an API similar
5987 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
5988 response. OCSP_response_get1_basic() extracts basic response
5989 from response. OCSP_resp_find_status(): finds and extracts status
5990 information from an OCSP_CERTID structure (which will be created
5991 when the request structure is built). These are built from lower
5992 level functions which work on OCSP_SINGLERESP structures but
5993 wont normally be used unless the application wishes to examine
5994 extensions in the OCSP response for example.
5996 Replace nonce routines with a pair of functions.
5997 OCSP_request_add1_nonce() adds a nonce value and optionally
5998 generates a random value. OCSP_check_nonce() checks the
5999 validity of the nonce in an OCSP response.
6002 *) Change function OCSP_request_add() to OCSP_request_add0_id().
6003 This doesn't copy the supplied OCSP_CERTID and avoids the
6004 need to free up the newly created id. Change return type
6005 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
6006 This can then be used to add extensions to the request.
6007 Deleted OCSP_request_new(), since most of its functionality
6008 is now in OCSP_REQUEST_new() (and the case insensitive name
6009 clash) apart from the ability to set the request name which
6010 will be added elsewhere.
6013 *) Update OCSP API. Remove obsolete extensions argument from
6014 various functions. Extensions are now handled using the new
6015 OCSP extension code. New simple OCSP HTTP function which
6016 can be used to send requests and parse the response.
6019 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
6020 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
6021 uses the special reorder version of SET OF to sort the attributes
6022 and reorder them to match the encoded order. This resolves a long
6023 standing problem: a verify on a PKCS7 structure just after signing
6024 it used to fail because the attribute order did not match the
6025 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
6026 it uses the received order. This is necessary to tolerate some broken
6027 software that does not order SET OF. This is handled by encoding
6028 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
6029 to produce the required SET OF.
6032 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
6033 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
6034 files to get correct declarations of the ASN.1 item variables.
6037 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
6038 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
6039 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
6040 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
6041 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
6042 ASN1_ITEM and no wrapper functions.
6045 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
6046 replace the old function pointer based I/O routines. Change most of
6047 the *_d2i_bio() and *_d2i_fp() functions to use these.
6050 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
6051 lines, recognice more "algorithms" that can be deselected, and make
6052 it complain about algorithm deselection that isn't recognised.
6055 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
6056 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
6057 to use new functions. Add NO_ASN1_OLD which can be set to remove
6058 some old style ASN1 functions: this can be used to determine if old
6059 code will still work when these eventually go away.
6062 *) New extension functions for OCSP structures, these follow the
6063 same conventions as certificates and CRLs.
6066 *) New function X509V3_add1_i2d(). This automatically encodes and
6067 adds an extension. Its behaviour can be customised with various
6068 flags to append, replace or delete. Various wrappers added for
6069 certifcates and CRLs.
6072 *) Fix to avoid calling the underlying ASN1 print routine when
6073 an extension cannot be parsed. Correct a typo in the
6074 OCSP_SERVICELOC extension. Tidy up print OCSP format.
6077 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
6078 entries for variables.
6081 *) Add functionality to apps/openssl.c for detecting locking
6082 problems: As the program is single-threaded, all we have
6083 to do is register a locking callback using an array for
6084 storing which locks are currently held by the program.
6087 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
6088 SSL_get_ex_data_X509_STORE_idx(), which is used in
6089 ssl_verify_cert_chain() and thus can be called at any time
6090 during TLS/SSL handshakes so that thread-safety is essential.
6091 Unfortunately, the ex_data design is not at all suited
6092 for multi-threaded use, so it probably should be abolished.
6095 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
6096 [Broadcom, tweaked and integrated by Geoff Thorpe]
6098 *) Move common extension printing code to new function
6099 X509V3_print_extensions(). Reorganise OCSP print routines and
6100 implement some needed OCSP ASN1 functions. Add OCSP extensions.
6103 *) New function X509_signature_print() to remove duplication in some
6107 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
6108 set (this was treated exactly the same as SET OF previously). This
6109 is used to reorder the STACK representing the structure to match the
6110 encoding. This will be used to get round a problem where a PKCS7
6111 structure which was signed could not be verified because the STACK
6112 order did not reflect the encoded order.
6115 *) Reimplement the OCSP ASN1 module using the new code.
6118 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
6119 for its ASN1 operations. The old style function pointers still exist
6120 for now but they will eventually go away.
6123 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
6124 completely replaces the old ASN1 functionality with a table driven
6125 encoder and decoder which interprets an ASN1_ITEM structure describing
6126 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
6127 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
6128 has also been converted to the new form.
6131 *) Change BN_mod_exp_recp so that negative moduli are tolerated
6132 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
6133 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
6134 for negative moduli.
6137 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
6138 of not touching the result's sign bit.
6141 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
6145 *) Changed the LHASH code to use prototypes for callbacks, and created
6146 macros to declare and implement thin (optionally static) functions
6147 that provide type-safety and avoid function pointer casting for the
6148 type-specific callbacks.
6151 *) Added Kerberos Cipher Suites to be used with TLS, as written in
6153 [Veers Staats <staatsvr@asc.hpc.mil>,
6154 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
6156 *) Reformat the FAQ so the different questions and answers can be divided
6157 in sections depending on the subject.
6160 *) Have the zlib compression code load ZLIB.DLL dynamically under
6164 *) New function BN_mod_sqrt for computing square roots modulo a prime
6165 (using the probabilistic Tonelli-Shanks algorithm unless
6166 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
6167 be handled deterministically).
6168 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6170 *) Make BN_mod_inverse faster by explicitly handling small quotients
6171 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
6172 512 bits], about 30% for larger ones [1024 or 2048 bits].)
6175 *) New function BN_kronecker.
6178 *) Fix BN_gcd so that it works on negative inputs; the result is
6179 positive unless both parameters are zero.
6180 Previously something reasonably close to an infinite loop was
6181 possible because numbers could be growing instead of shrinking
6182 in the implementation of Euclid's algorithm.
6185 *) Fix BN_is_word() and BN_is_one() macros to take into account the
6186 sign of the number in question.
6188 Fix BN_is_word(a,w) to work correctly for w == 0.
6190 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
6191 because its test if the absolute value of 'a' equals 'w'.
6192 Note that BN_abs_is_word does *not* handle w == 0 reliably;
6193 it exists mostly for use in the implementations of BN_is_zero(),
6194 BN_is_one(), and BN_is_word().
6197 *) New function BN_swap.
6200 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
6201 the exponentiation functions are more likely to produce reasonable
6202 results on negative inputs.
6205 *) Change BN_mod_mul so that the result is always non-negative.
6206 Previously, it could be negative if one of the factors was negative;
6207 I don't think anyone really wanted that behaviour.
6210 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
6211 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
6212 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
6213 and add new functions:
6222 BN_mod_lshift1_quick
6226 These functions always generate non-negative results.
6228 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
6229 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
6231 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
6232 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
6233 be reduced modulo m.
6234 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6237 The following entry accidentily appeared in the CHANGES file
6238 distributed with OpenSSL 0.9.7. The modifications described in
6239 it do *not* apply to OpenSSL 0.9.7.
6241 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6242 was actually never needed) and in BN_mul(). The removal in BN_mul()
6243 required a small change in bn_mul_part_recursive() and the addition
6244 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6245 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6246 bn_sub_words() and bn_add_words() except they take arrays with
6251 *) In 'openssl passwd', verify passwords read from the terminal
6252 unless the '-salt' option is used (which usually means that
6253 verification would just waste user's time since the resulting
6254 hash is going to be compared with some given password hash)
6255 or the new '-noverify' option is used.
6257 This is an incompatible change, but it does not affect
6258 non-interactive use of 'openssl passwd' (passwords on the command
6259 line, '-stdin' option, '-in ...' option) and thus should not
6263 *) Remove all references to RSAref, since there's no more need for it.
6266 *) Make DSO load along a path given through an environment variable
6267 (SHLIB_PATH) with shl_load().
6270 *) Constify the ENGINE code as a result of BIGNUM constification.
6271 Also constify the RSA code and most things related to it. In a
6272 few places, most notable in the depth of the ASN.1 code, ugly
6273 casts back to non-const were required (to be solved at a later
6277 *) Make it so the openssl application has all engines loaded by default.
6280 *) Constify the BIGNUM routines a little more.
6283 *) Add the following functions:
6285 ENGINE_load_cswift()
6287 ENGINE_load_atalla()
6289 ENGINE_load_builtin_engines()
6291 That way, an application can itself choose if external engines that
6292 are built-in in OpenSSL shall ever be used or not. The benefit is
6293 that applications won't have to be linked with libdl or other dso
6294 libraries unless it's really needed.
6296 Changed 'openssl engine' to load all engines on demand.
6297 Changed the engine header files to avoid the duplication of some
6298 declarations (they differed!).
6301 *) 'openssl engine' can now list capabilities.
6304 *) Better error reporting in 'openssl engine'.
6307 *) Never call load_dh_param(NULL) in s_server.
6310 *) Add engine application. It can currently list engines by name and
6311 identity, and test if they are actually available.
6314 *) Improve RPM specification file by forcing symbolic linking and making
6315 sure the installed documentation is also owned by root.root.
6316 [Damien Miller <djm@mindrot.org>]
6318 *) Give the OpenSSL applications more possibilities to make use of
6319 keys (public as well as private) handled by engines.
6322 *) Add OCSP code that comes from CertCo.
6325 *) Add VMS support for the Rijndael code.
6328 *) Added untested support for Nuron crypto accelerator.
6331 *) Add support for external cryptographic devices. This code was
6332 previously distributed separately as the "engine" branch.
6333 [Geoff Thorpe, Richard Levitte]
6335 *) Rework the filename-translation in the DSO code. It is now possible to
6336 have far greater control over how a "name" is turned into a filename
6337 depending on the operating environment and any oddities about the
6338 different shared library filenames on each system.
6341 *) Support threads on FreeBSD-elf in Configure.
6344 *) Fix for SHA1 assembly problem with MASM: it produces
6345 warnings about corrupt line number information when assembling
6346 with debugging information. This is caused by the overlapping
6348 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
6351 NCONF_get_number() has no error checking at all. As a replacement,
6352 NCONF_get_number_e() is defined (_e for "error checking") and is
6353 promoted strongly. The old NCONF_get_number is kept around for
6354 binary backward compatibility.
6355 Make it possible for methods to load from something other than a BIO,
6356 by providing a function pointer that is given a name instead of a BIO.
6357 For example, this could be used to load configuration data from an
6361 *) Fix for non blocking accept BIOs. Added new I/O special reason
6362 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
6363 with non blocking I/O was not possible because no retry code was
6364 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
6368 *) Added the beginnings of Rijndael support.
6371 *) Fix for bug in DirectoryString mask setting. Add support for
6372 X509_NAME_print_ex() in 'req' and X509_print_ex() function
6373 to allow certificate printing to more controllable, additional
6374 'certopt' option to 'x509' to allow new printing options to be
6378 *) Clean old EAY MD5 hack from e_os.h.
6381 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
6383 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
6384 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
6385 [Joe Orton, Steve Henson]
6387 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
6389 *) Fix additional bug revealed by the NISCC test suite:
6391 Stop bug triggering large recursion when presented with
6392 certain ASN.1 tags (CVE-2003-0851)
6395 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
6397 *) Fix various bugs revealed by running the NISCC test suite:
6399 Stop out of bounds reads in the ASN1 code when presented with
6400 invalid tags (CVE-2003-0543 and CVE-2003-0544).
6402 If verify callback ignores invalid public key errors don't try to check
6403 certificate signature with the NULL public key.
6407 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
6408 if the server requested one: as stated in TLS 1.0 and SSL 3.0
6412 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
6413 extra data after the compression methods not only for TLS 1.0
6414 but also for SSL 3.0 (as required by the specification).
6415 [Bodo Moeller; problem pointed out by Matthias Loepfe]
6417 *) Change X509_certificate_type() to mark the key as exported/exportable
6418 when it's 512 *bits* long, not 512 bytes.
6421 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
6423 *) Countermeasure against the Klima-Pokorny-Rosa extension of
6424 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
6425 a protocol version number mismatch like a decryption error
6426 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
6429 *) Turn on RSA blinding by default in the default implementation
6430 to avoid a timing attack. Applications that don't want it can call
6431 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
6432 They would be ill-advised to do so in most cases.
6433 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
6435 *) Change RSA blinding code so that it works when the PRNG is not
6436 seeded (in this case, the secret RSA exponent is abused as
6437 an unpredictable seed -- if it is not unpredictable, there
6438 is no point in blinding anyway). Make RSA blinding thread-safe
6439 by remembering the creator's thread ID in rsa->blinding and
6440 having all other threads use local one-time blinding factors
6441 (this requires more computation than sharing rsa->blinding, but
6442 avoids excessive locking; and if an RSA object is not shared
6443 between threads, blinding will still be very fast).
6446 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
6448 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
6449 via timing by performing a MAC computation even if incorrrect
6450 block cipher padding has been found. This is a countermeasure
6451 against active attacks where the attacker has to distinguish
6452 between bad padding and a MAC verification error. (CVE-2003-0078)
6454 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
6455 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
6456 Martin Vuagnoux (EPFL, Ilion)]
6458 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
6460 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
6461 memory from it's contents. This is done with a counter that will
6462 place alternating values in each byte. This can be used to solve
6463 two issues: 1) the removal of calls to memset() by highly optimizing
6464 compilers, and 2) cleansing with other values than 0, since those can
6465 be read through on certain media, for example a swap space on disk.
6468 *) Bugfix: client side session caching did not work with external caching,
6469 because the session->cipher setting was not restored when reloading
6470 from the external cache. This problem was masked, when
6471 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
6472 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
6475 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
6476 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
6477 [Zeev Lieber <zeev-l@yahoo.com>]
6479 *) Undo an undocumented change introduced in 0.9.6e which caused
6480 repeated calls to OpenSSL_add_all_ciphers() and
6481 OpenSSL_add_all_digests() to be ignored, even after calling
6485 *) Change the default configuration reader to deal with last line not
6486 being properly terminated.
6489 *) Change X509_NAME_cmp() so it applies the special rules on handling
6490 DN values that are of type PrintableString, as well as RDNs of type
6491 emailAddress where the value has the type ia5String.
6492 [stefank@valicert.com via Richard Levitte]
6494 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
6495 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
6496 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
6497 the bitwise-OR of the two for use by the majority of applications
6498 wanting this behaviour, and update the docs. The documented
6499 behaviour and actual behaviour were inconsistent and had been
6500 changing anyway, so this is more a bug-fix than a behavioural
6502 [Geoff Thorpe, diagnosed by Nadav Har'El]
6504 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
6505 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
6508 *) Fix initialization code race conditions in
6509 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
6510 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
6511 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
6512 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
6513 ssl2_get_cipher_by_char(),
6514 ssl3_get_cipher_by_char().
6515 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
6517 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
6518 the cached sessions are flushed, as the remove_cb() might use ex_data
6519 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
6520 (see [openssl.org #212]).
6521 [Geoff Thorpe, Lutz Jaenicke]
6523 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
6524 length, instead of the encoding length to d2i_ASN1_OBJECT.
6527 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
6529 *) [In 0.9.6g-engine release:]
6530 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
6531 [Lynn Gazis <lgazis@rainbow.com>]
6533 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
6535 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
6536 and get fix the header length calculation.
6537 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
6538 Alon Kantor <alonk@checkpoint.com> (and others),
6541 *) Use proper error handling instead of 'assertions' in buffer
6542 overflow checks added in 0.9.6e. This prevents DoS (the
6543 assertions could call abort()).
6544 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
6546 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
6548 *) Add various sanity checks to asn1_get_length() to reject
6549 the ASN1 length bytes if they exceed sizeof(long), will appear
6550 negative or the content length exceeds the length of the
6552 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
6554 *) Fix cipher selection routines: ciphers without encryption had no flags
6555 for the cipher strength set and where therefore not handled correctly
6556 by the selection routines (PR #130).
6559 *) Fix EVP_dsa_sha macro.
6563 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
6564 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
6565 that was added in OpenSSL 0.9.6d.
6567 As the countermeasure turned out to be incompatible with some
6568 broken SSL implementations, the new option is part of SSL_OP_ALL.
6569 SSL_OP_ALL is usually employed when compatibility with weird SSL
6570 implementations is desired (e.g. '-bugs' option to 's_client' and
6571 's_server'), so the new option is automatically set in many
6575 *) Changes in security patch:
6577 Changes marked "(CHATS)" were sponsored by the Defense Advanced
6578 Research Projects Agency (DARPA) and Air Force Research Laboratory,
6579 Air Force Materiel Command, USAF, under agreement number
6582 *) Add various sanity checks to asn1_get_length() to reject
6583 the ASN1 length bytes if they exceed sizeof(long), will appear
6584 negative or the content length exceeds the length of the
6585 supplied buffer. (CVE-2002-0659)
6586 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
6588 *) Assertions for various potential buffer overflows, not known to
6590 [Ben Laurie (CHATS)]
6592 *) Various temporary buffers to hold ASCII versions of integers were
6593 too small for 64 bit platforms. (CVE-2002-0655)
6594 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
6596 *) Remote buffer overflow in SSL3 protocol - an attacker could
6597 supply an oversized session ID to a client. (CVE-2002-0656)
6598 [Ben Laurie (CHATS)]
6600 *) Remote buffer overflow in SSL2 protocol - an attacker could
6601 supply an oversized client master key. (CVE-2002-0656)
6602 [Ben Laurie (CHATS)]
6604 Changes between 0.9.6c and 0.9.6d [9 May 2002]
6606 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
6607 encoded as NULL) with id-dsa-with-sha1.
6608 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
6610 *) Check various X509_...() return values in apps/req.c.
6611 [Nils Larsch <nla@trustcenter.de>]
6613 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
6614 an end-of-file condition would erronously be flagged, when the CRLF
6615 was just at the end of a processed block. The bug was discovered when
6616 processing data through a buffering memory BIO handing the data to a
6617 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
6618 <ptsekov@syntrex.com> and Nedelcho Stanev.
6621 *) Implement a countermeasure against a vulnerability recently found
6622 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
6623 before application data chunks to avoid the use of known IVs
6624 with data potentially chosen by the attacker.
6627 *) Fix length checks in ssl3_get_client_hello().
6630 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
6631 to prevent ssl3_read_internal() from incorrectly assuming that
6632 ssl3_read_bytes() found application data while handshake
6633 processing was enabled when in fact s->s3->in_read_app_data was
6634 merely automatically cleared during the initial handshake.
6635 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
6637 *) Fix object definitions for Private and Enterprise: they were not
6638 recognized in their shortname (=lowercase) representation. Extend
6639 obj_dat.pl to issue an error when using undefined keywords instead
6640 of silently ignoring the problem (Svenning Sorensen
6641 <sss@sss.dnsalias.net>).
6644 *) Fix DH_generate_parameters() so that it works for 'non-standard'
6645 generators, i.e. generators other than 2 and 5. (Previously, the
6646 code did not properly initialise the 'add' and 'rem' values to
6647 BN_generate_prime().)
6649 In the new general case, we do not insist that 'generator' is
6650 actually a primitive root: This requirement is rather pointless;
6651 a generator of the order-q subgroup is just as good, if not
6655 *) Map new X509 verification errors to alerts. Discovered and submitted by
6656 Tom Wu <tom@arcot.com>.
6659 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
6660 returning non-zero before the data has been completely received
6661 when using non-blocking I/O.
6662 [Bodo Moeller; problem pointed out by John Hughes]
6664 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
6665 [Ben Laurie, Lutz Jaenicke]
6667 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
6668 Yoram Zahavi <YoramZ@gilian.com>).
6671 *) Add information about CygWin 1.3 and on, and preserve proper
6672 configuration for the versions before that.
6673 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
6675 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
6676 check whether we deal with a copy of a session and do not delete from
6677 the cache in this case. Problem reported by "Izhar Shoshani Levi"
6678 <izhar@checkpoint.com>.
6681 *) Do not store session data into the internal session cache, if it
6682 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
6683 flag is set). Proposed by Aslam <aslam@funk.com>.
6686 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
6690 *) [In 0.9.6d-engine release:]
6691 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
6692 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
6694 *) Add the configuration target linux-s390x.
6695 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
6697 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
6698 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
6699 variable as an indication that a ClientHello message has been
6700 received. As the flag value will be lost between multiple
6701 invocations of ssl3_accept when using non-blocking I/O, the
6702 function may not be aware that a handshake has actually taken
6703 place, thus preventing a new session from being added to the
6706 To avoid this problem, we now set s->new_session to 2 instead of
6707 using a local variable.
6708 [Lutz Jaenicke, Bodo Moeller]
6710 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
6711 if the SSL_R_LENGTH_MISMATCH error is detected.
6712 [Geoff Thorpe, Bodo Moeller]
6714 *) New 'shared_ldflag' column in Configure platform table.
6717 *) Fix EVP_CIPHER_mode macro.
6718 ["Dan S. Camper" <dan@bti.net>]
6720 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
6721 type, we must throw them away by setting rr->length to 0.
6722 [D P Chang <dpc@qualys.com>]
6724 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
6726 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
6727 <Dominikus.Scherkl@biodata.com>. (The previous implementation
6728 worked incorrectly for those cases where range = 10..._2 and
6729 3*range is two bits longer than range.)
6732 *) Only add signing time to PKCS7 structures if it is not already
6736 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
6737 OBJ_ld_ce should be OBJ_id_ce.
6738 Also some ip-pda OIDs in crypto/objects/objects.txt were
6739 incorrect (cf. RFC 3039).
6740 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
6742 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
6743 returns early because it has nothing to do.
6744 [Andy Schneider <andy.schneider@bjss.co.uk>]
6746 *) [In 0.9.6c-engine release:]
6747 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
6748 [Andy Schneider <andy.schneider@bjss.co.uk>]
6750 *) [In 0.9.6c-engine release:]
6751 Add support for Cryptographic Appliance's keyserver technology.
6752 (Use engine 'keyclient')
6753 [Cryptographic Appliances and Geoff Thorpe]
6755 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
6756 is called via tools/c89.sh because arguments have to be
6757 rearranged (all '-L' options must appear before the first object
6759 [Richard Shapiro <rshapiro@abinitio.com>]
6761 *) [In 0.9.6c-engine release:]
6762 Add support for Broadcom crypto accelerator cards, backported
6764 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
6766 *) [In 0.9.6c-engine release:]
6767 Add support for SureWare crypto accelerator cards from
6768 Baltimore Technologies. (Use engine 'sureware')
6769 [Baltimore Technologies and Mark Cox]
6771 *) [In 0.9.6c-engine release:]
6772 Add support for crypto accelerator cards from Accelerated
6773 Encryption Processing, www.aep.ie. (Use engine 'aep')
6774 [AEP Inc. and Mark Cox]
6776 *) Add a configuration entry for gcc on UnixWare.
6777 [Gary Benson <gbenson@redhat.com>]
6779 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
6780 messages are stored in a single piece (fixed-length part and
6781 variable-length part combined) and fix various bugs found on the way.
6784 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
6785 instead. BIO_gethostbyname() does not know what timeouts are
6786 appropriate, so entries would stay in cache even when they have
6788 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
6790 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
6791 faced with a pathologically small ClientHello fragment that does
6792 not contain client_version: Instead of aborting with an error,
6793 simply choose the highest available protocol version (i.e.,
6794 TLS 1.0 unless it is disabled). In practice, ClientHello
6795 messages are never sent like this, but this change gives us
6796 strictly correct behaviour at least for TLS.
6799 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
6800 never resets s->method to s->ctx->method when called from within
6801 one of the SSL handshake functions.
6802 [Bodo Moeller; problem pointed out by Niko Baric]
6804 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
6805 (sent using the client's version number) if client_version is
6806 smaller than the protocol version in use. Also change
6807 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
6808 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
6809 the client will at least see that alert.
6812 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
6816 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
6817 client receives HelloRequest while in a handshake.
6818 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
6820 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
6821 should end in 'break', not 'goto end' which circuments various
6822 cleanups done in state SSL_ST_OK. But session related stuff
6823 must be disabled for SSL_ST_OK in the case that we just sent a
6826 Also avoid some overhead by not calling ssl_init_wbio_buffer()
6827 before just sending a HelloRequest.
6828 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
6830 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
6831 reveal whether illegal block cipher padding was found or a MAC
6832 verification error occured. (Neither SSLerr() codes nor alerts
6833 are directly visible to potential attackers, but the information
6834 may leak via logfiles.)
6836 Similar changes are not required for the SSL 2.0 implementation
6837 because the number of padding bytes is sent in clear for SSL 2.0,
6838 and the extra bytes are just ignored. However ssl/s2_pkt.c
6839 failed to verify that the purported number of padding bytes is in
6843 *) Add OpenUNIX-8 support including shared libraries
6844 (Boyd Lynn Gerber <gerberb@zenez.com>).
6847 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
6848 'wristwatch attack' using huge encoding parameters (cf.
6849 James H. Manger's CRYPTO 2001 paper). Note that the
6850 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
6851 encoding parameters and hence was not vulnerable.
6854 *) BN_sqr() bug fix.
6855 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
6857 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
6858 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
6859 followed by modular reduction.
6860 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
6862 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
6863 equivalent based on BN_pseudo_rand() instead of BN_rand().
6866 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
6867 This function was broken, as the check for a new client hello message
6868 to handle SGC did not allow these large messages.
6869 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
6872 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
6875 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
6876 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
6879 *) Rework the configuration and shared library support for Tru64 Unix.
6880 The configuration part makes use of modern compiler features and
6881 still retains old compiler behavior for those that run older versions
6882 of the OS. The shared library support part includes a variant that
6883 uses the RPATH feature, and is available through the special
6884 configuration target "alpha-cc-rpath", which will never be selected
6886 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
6888 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
6889 with the same message size as in ssl3_get_certificate_request().
6890 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
6891 messages might inadvertently be reject as too long.
6892 [Petr Lampa <lampa@fee.vutbr.cz>]
6894 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
6897 *) Modified SSL library such that the verify_callback that has been set
6898 specificly for an SSL object with SSL_set_verify() is actually being
6899 used. Before the change, a verify_callback set with this function was
6900 ignored and the verify_callback() set in the SSL_CTX at the time of
6901 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
6902 to allow the necessary settings.
6905 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
6906 explicitly to NULL, as at least on Solaris 8 this seems not always to be
6907 done automatically (in contradiction to the requirements of the C
6908 standard). This made problems when used from OpenSSH.
6911 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
6912 dh->length and always used
6914 BN_rand_range(priv_key, dh->p).
6916 BN_rand_range() is not necessary for Diffie-Hellman, and this
6917 specific range makes Diffie-Hellman unnecessarily inefficient if
6918 dh->length (recommended exponent length) is much smaller than the
6919 length of dh->p. We could use BN_rand_range() if the order of
6920 the subgroup was stored in the DH structure, but we only have
6925 BN_rand(priv_key, l, ...)
6927 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
6933 RSA_eay_public_encrypt
6934 RSA_eay_private_decrypt
6935 RSA_eay_private_encrypt (signing)
6936 RSA_eay_public_decrypt (signature verification)
6938 (default implementations for RSA_public_encrypt,
6939 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
6940 always reject numbers >= n.
6943 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
6944 to synchronize access to 'locking_thread'. This is necessary on
6945 systems where access to 'locking_thread' (an 'unsigned long'
6946 variable) is not atomic.
6949 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
6950 *before* setting the 'crypto_lock_rand' flag. The previous code had
6951 a race condition if 0 is a valid thread ID.
6952 [Travis Vitek <vitek@roguewave.com>]
6954 *) Add support for shared libraries under Irix.
6955 [Albert Chin-A-Young <china@thewrittenword.com>]
6957 *) Add configuration option to build on Linux on both big-endian and
6959 [Ralf Baechle <ralf@uni-koblenz.de>]
6961 *) Add the possibility to create shared libraries on HP-UX.
6964 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
6966 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
6967 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
6968 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
6969 PRNG state recovery was possible based on the output of
6970 one PRNG request appropriately sized to gain knowledge on
6971 'md' followed by enough consecutive 1-byte PRNG requests
6972 to traverse all of 'state'.
6974 1. When updating 'md_local' (the current thread's copy of 'md')
6975 during PRNG output generation, hash all of the previous
6976 'md_local' value, not just the half used for PRNG output.
6978 2. Make the number of bytes from 'state' included into the hash
6979 independent from the number of PRNG bytes requested.
6981 The first measure alone would be sufficient to avoid
6982 Markku-Juhani's attack. (Actually it had never occurred
6983 to me that the half of 'md_local' used for chaining was the
6984 half from which PRNG output bytes were taken -- I had always
6985 assumed that the secret half would be used.) The second
6986 measure makes sure that additional data from 'state' is never
6987 mixed into 'md_local' in small portions; this heuristically
6988 further strengthens the PRNG.
6991 *) Fix crypto/bn/asm/mips3.s.
6994 *) When only the key is given to "enc", the IV is undefined. Print out
6995 an error message in this case.
6998 *) Handle special case when X509_NAME is empty in X509 printing routines.
7001 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
7002 positive and less than q.
7005 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
7006 used: it isn't thread safe and the add_lock_callback should handle
7008 [Paul Rose <Paul.Rose@bridge.com>]
7010 *) Verify that incoming data obeys the block size in
7011 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
7015 [Ulf Möller, Bodo Möller]
7017 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
7018 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
7019 when fixing the server behaviour for backwards-compatible 'client
7020 hello' messages. (Note that the attack is impractical against
7021 SSL 3.0 and TLS 1.0 anyway because length and version checking
7022 means that the probability of guessing a valid ciphertext is
7023 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
7026 Before 0.9.5, the countermeasure (hide the error by generating a
7027 random 'decryption result') did not work properly because
7028 ERR_clear_error() was missing, meaning that SSL_get_error() would
7029 detect the supposedly ignored error.
7031 Both problems are now fixed.
7034 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
7035 (previously it was 1024).
7038 *) Fix for compatibility mode trust settings: ignore trust settings
7039 unless some valid trust or reject settings are present.
7042 *) Fix for blowfish EVP: its a variable length cipher.
7045 *) Fix various bugs related to DSA S/MIME verification. Handle missing
7046 parameters in DSA public key structures and return an error in the
7047 DSA routines if parameters are absent.
7050 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
7051 in the current directory if neither $RANDFILE nor $HOME was set.
7052 RAND_file_name() in 0.9.6a returned NULL in this case. This has
7053 caused some confusion to Windows users who haven't defined $HOME.
7054 Thus RAND_file_name() is changed again: e_os.h can define a
7055 DEFAULT_HOME, which will be used if $HOME is not set.
7056 For Windows, we use "C:"; on other platforms, we still require
7057 environment variables.
7059 *) Move 'if (!initialized) RAND_poll()' into regions protected by
7060 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
7061 having multiple threads call RAND_poll() concurrently.
7064 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
7065 combination of a flag and a thread ID variable.
7066 Otherwise while one thread is in ssleay_rand_bytes (which sets the
7067 flag), *other* threads can enter ssleay_add_bytes without obeying
7068 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
7069 that they do not hold after the first thread unsets add_do_not_lock).
7072 *) Change bctest again: '-x' expressions are not available in all
7076 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
7078 *) Fix a couple of memory leaks in PKCS7_dataDecode()
7079 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
7081 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
7082 the default extension for executables, if any. Also, make the perl
7083 scripts that use symlink() to test if it really exists and use "cp"
7084 if it doesn't. All this made OpenSSL compilable and installable in
7088 *) Fix for asn1_GetSequence() for indefinite length constructed data.
7089 If SEQUENCE is length is indefinite just set c->slen to the total
7090 amount of data available.
7091 [Steve Henson, reported by shige@FreeBSD.org]
7092 [This change does not apply to 0.9.7.]
7094 *) Change bctest to avoid here-documents inside command substitution
7095 (workaround for FreeBSD /bin/sh bug).
7096 For compatibility with Ultrix, avoid shell functions (introduced
7097 in the bctest version that searches along $PATH).
7100 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
7101 with des_encrypt() defined on some operating systems, like Solaris
7105 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
7106 On the Importance of Eliminating Errors in Cryptographic
7107 Computations, J. Cryptology 14 (2001) 2, 101-119,
7108 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
7111 *) MIPS assembler BIGNUM division bug fix.
7114 *) Disabled incorrect Alpha assembler code.
7117 *) Fix PKCS#7 decode routines so they correctly update the length
7118 after reading an EOC for the EXPLICIT tag.
7120 [This change does not apply to 0.9.7.]
7122 *) Fix bug in PKCS#12 key generation routines. This was triggered
7123 if a 3DES key was generated with a 0 initial byte. Include
7124 PKCS12_BROKEN_KEYGEN compilation option to retain the old
7125 (but broken) behaviour.
7128 *) Enhance bctest to search for a working bc along $PATH and print
7130 [Tim Rice <tim@multitalents.net> via Richard Levitte]
7132 *) Fix memory leaks in err.c: free err_data string if necessary;
7133 don't write to the wrong index in ERR_set_error_data.
7136 *) Implement ssl23_peek (analogous to ssl23_read), which previously
7140 *) Replace rdtsc with _emit statements for VC++ version 5.
7141 [Jeremy Cooper <jeremy@baymoo.org>]
7143 *) Make it possible to reuse SSLv2 sessions.
7146 *) In copy_email() check for >= 0 as a return value for
7147 X509_NAME_get_index_by_NID() since 0 is a valid index.
7148 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
7150 *) Avoid coredump with unsupported or invalid public keys by checking if
7151 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
7152 PKCS7_verify() fails with non detached data.
7155 *) Don't use getenv in library functions when run as setuid/setgid.
7156 New function OPENSSL_issetugid().
7159 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
7160 due to incorrect handling of multi-threading:
7162 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
7164 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
7166 3. Count how many times MemCheck_off() has been called so that
7167 nested use can be treated correctly. This also avoids
7168 inband-signalling in the previous code (which relied on the
7169 assumption that thread ID 0 is impossible).
7172 *) Add "-rand" option also to s_client and s_server.
7175 *) Fix CPU detection on Irix 6.x.
7176 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
7177 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7179 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
7182 [This change does not apply to 0.9.7.]
7184 *) Use the cached encoding of an X509_NAME structure rather than
7185 copying it. This is apparently the reason for the libsafe "errors"
7186 but the code is actually correct.
7189 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
7190 Bleichenbacher's DSA attack.
7191 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
7192 to be set and top=0 forces the highest bit to be set; top=-1 is new
7193 and leaves the highest bit random.
7194 [Ulf Moeller, Bodo Moeller]
7196 *) In the NCONF_...-based implementations for CONF_... queries
7197 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
7198 a temporary CONF structure with the data component set to NULL
7199 (which gives segmentation faults in lh_retrieve).
7200 Instead, use NULL for the CONF pointer in CONF_get_string and
7201 CONF_get_number (which may use environment variables) and directly
7202 return NULL from CONF_get_section.
7205 *) Fix potential buffer overrun for EBCDIC.
7208 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
7209 keyUsage if basicConstraints absent for a CA.
7212 *) Make SMIME_write_PKCS7() write mail header values with a format that
7213 is more generally accepted (no spaces before the semicolon), since
7214 some programs can't parse those values properly otherwise. Also make
7215 sure BIO's that break lines after each write do not create invalid
7219 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
7220 macros previously used would not encode an empty SEQUENCE OF
7221 and break the signature.
7223 [This change does not apply to 0.9.7.]
7225 *) Zero the premaster secret after deriving the master secret in
7229 *) Add some EVP_add_digest_alias registrations (as found in
7230 OpenSSL_add_all_digests()) to SSL_library_init()
7231 aka OpenSSL_add_ssl_algorithms(). This provides improved
7232 compatibility with peers using X.509 certificates
7233 with unconventional AlgorithmIdentifier OIDs.
7236 *) Fix for Irix with NO_ASM.
7237 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7239 *) ./config script fixes.
7240 [Ulf Moeller, Richard Levitte]
7242 *) Fix 'openssl passwd -1'.
7245 *) Change PKCS12_key_gen_asc() so it can cope with non null
7246 terminated strings whose length is passed in the passlen
7247 parameter, for example from PEM callbacks. This was done
7248 by adding an extra length parameter to asc2uni().
7249 [Steve Henson, reported by <oddissey@samsung.co.kr>]
7251 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
7252 call failed, free the DSA structure.
7255 *) Fix to uni2asc() to cope with zero length Unicode strings.
7256 These are present in some PKCS#12 files.
7259 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
7260 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
7261 when writing a 32767 byte record.
7262 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
7264 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
7265 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
7267 (RSA objects have a reference count access to which is protected
7268 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
7269 so they are meant to be shared between threads.)
7270 [Bodo Moeller, Geoff Thorpe; original patch submitted by
7271 "Reddie, Steven" <Steven.Reddie@ca.com>]
7273 *) Fix a deadlock in CRYPTO_mem_leaks().
7276 *) Use better test patterns in bntest.
7279 *) rand_win.c fix for Borland C.
7282 *) BN_rshift bugfix for n == 0.
7285 *) Add a 'bctest' script that checks for some known 'bc' bugs
7286 so that 'make test' does not abort just because 'bc' is broken.
7289 *) Store verify_result within SSL_SESSION also for client side to
7290 avoid potential security hole. (Re-used sessions on the client side
7291 always resulted in verify_result==X509_V_OK, not using the original
7292 result of the server certificate verification.)
7295 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
7296 SSL3_RT_APPLICATION_DATA, return 0.
7297 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
7301 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
7302 releases, have been re-implemented by renaming the previous
7303 implementations of ssl2_read and ssl3_read to ssl2_read_internal
7304 and ssl3_read_internal, respectively, and adding 'peek' parameters
7305 to them. The new ssl[23]_{read,peek} functions are calls to
7306 ssl[23]_read_internal with the 'peek' flag set appropriately.
7307 A 'peek' parameter has also been added to ssl3_read_bytes, which
7308 does the actual work for ssl3_read_internal.
7311 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
7312 the method-specific "init()" handler. Also clean up ex_data after
7313 calling the method-specific "finish()" handler. Previously, this was
7314 happening the other way round.
7317 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
7318 The previous value, 12, was not always sufficient for BN_mod_exp().
7321 *) Make sure that shared libraries get the internal name engine with
7322 the full version number and not just 0. This should mark the
7323 shared libraries as not backward compatible. Of course, this should
7324 be changed again when we can guarantee backward binary compatibility.
7327 *) Fix typo in get_cert_by_subject() in by_dir.c
7328 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
7330 *) Rework the system to generate shared libraries:
7332 - Make note of the expected extension for the shared libraries and
7333 if there is a need for symbolic links from for example libcrypto.so.0
7334 to libcrypto.so.0.9.7. There is extended info in Configure for
7337 - Make as few rebuilds of the shared libraries as possible.
7339 - Still avoid linking the OpenSSL programs with the shared libraries.
7341 - When installing, install the shared libraries separately from the
7345 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
7347 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
7348 and not in SSL_clear because the latter is also used by the
7349 accept/connect functions; previously, the settings made by
7350 SSL_set_read_ahead would be lost during the handshake.
7351 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
7353 *) Correct util/mkdef.pl to be selective about disabled algorithms.
7354 Previously, it would create entries for disableed algorithms no
7358 *) Added several new manual pages for SSL_* function.
7361 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
7363 *) In ssl23_get_client_hello, generate an error message when faced
7364 with an initial SSL 3.0/TLS record that is too small to contain the
7365 first two bytes of the ClientHello message, i.e. client_version.
7366 (Note that this is a pathologic case that probably has never happened
7367 in real life.) The previous approach was to use the version number
7368 from the record header as a substitute; but our protocol choice
7369 should not depend on that one because it is not authenticated
7370 by the Finished messages.
7373 *) More robust randomness gathering functions for Windows.
7374 [Jeffrey Altman <jaltman@columbia.edu>]
7376 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
7377 not set then we don't setup the error code for issuer check errors
7378 to avoid possibly overwriting other errors which the callback does
7379 handle. If an application does set the flag then we assume it knows
7380 what it is doing and can handle the new informational codes
7384 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
7385 a general "ANY" type, as such it should be able to decode anything
7386 including tagged types. However it didn't check the class so it would
7387 wrongly interpret tagged types in the same way as their universal
7388 counterpart and unknown types were just rejected. Changed so that the
7389 tagged and unknown types are handled in the same way as a SEQUENCE:
7390 that is the encoding is stored intact. There is also a new type
7391 "V_ASN1_OTHER" which is used when the class is not universal, in this
7392 case we have no idea what the actual type is so we just lump them all
7396 *) On VMS, stdout may very well lead to a file that is written to
7397 in a record-oriented fashion. That means that every write() will
7398 write a separate record, which will be read separately by the
7399 programs trying to read from it. This can be very confusing.
7401 The solution is to put a BIO filter in the way that will buffer
7402 text until a linefeed is reached, and then write everything a
7403 line at a time, so every record written will be an actual line,
7404 not chunks of lines and not (usually doesn't happen, but I've
7405 seen it once) several lines in one record. BIO_f_linebuffer() is
7408 Currently, it's a VMS-only method, because that's where it has
7409 been tested well enough.
7412 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
7413 it can return incorrect results.
7414 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
7415 but it was in 0.9.6-beta[12].)
7418 *) Disable the check for content being present when verifying detached
7419 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
7420 include zero length content when signing messages.
7423 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
7424 BIO_ctrl (for BIO pairs).
7427 *) Add DSO method for VMS.
7430 *) Bug fix: Montgomery multiplication could produce results with the
7434 *) Add RPM specification openssl.spec and modify it to build three
7435 packages. The default package contains applications, application
7436 documentation and run-time libraries. The devel package contains
7437 include files, static libraries and function documentation. The
7438 doc package contains the contents of the doc directory. The original
7439 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
7442 *) Add a large number of documentation files for many SSL routines.
7443 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
7445 *) Add a configuration entry for Sony News 4.
7446 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
7448 *) Don't set the two most significant bits to one when generating a
7449 random number < q in the DSA library.
7452 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
7453 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
7454 the underlying transport is blocking) if a handshake took place.
7455 (The default behaviour is needed by applications such as s_client
7456 and s_server that use select() to determine when to use SSL_read;
7457 but for applications that know in advance when to expect data, it
7458 just makes things more complicated.)
7461 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
7465 *) Add a few more EBCDIC conditionals that make `req' and `x509'
7466 work better on such systems.
7467 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
7469 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
7470 Update PKCS12_parse() so it copies the friendlyName and the
7471 keyid to the certificates aux info.
7474 *) Fix bug in PKCS7_verify() which caused an infinite loop
7475 if there was more than one signature.
7476 [Sven Uszpelkat <su@celocom.de>]
7478 *) Major change in util/mkdef.pl to include extra information
7479 about each symbol, as well as presentig variables as well
7480 as functions. This change means that there's n more need
7481 to rebuild the .num files when some algorithms are excluded.
7484 *) Allow the verify time to be set by an application,
7485 rather than always using the current time.
7488 *) Phase 2 verify code reorganisation. The certificate
7489 verify code now looks up an issuer certificate by a
7490 number of criteria: subject name, authority key id
7491 and key usage. It also verifies self signed certificates
7492 by the same criteria. The main comparison function is
7493 X509_check_issued() which performs these checks.
7495 Lot of changes were necessary in order to support this
7496 without completely rewriting the lookup code.
7498 Authority and subject key identifier are now cached.
7500 The LHASH 'certs' is X509_STORE has now been replaced
7501 by a STACK_OF(X509_OBJECT). This is mainly because an
7502 LHASH can't store or retrieve multiple objects with
7503 the same hash value.
7505 As a result various functions (which were all internal
7506 use only) have changed to handle the new X509_STORE
7507 structure. This will break anything that messed round
7508 with X509_STORE internally.
7510 The functions X509_STORE_add_cert() now checks for an
7511 exact match, rather than just subject name.
7513 The X509_STORE API doesn't directly support the retrieval
7514 of multiple certificates matching a given criteria, however
7515 this can be worked round by performing a lookup first
7516 (which will fill the cache with candidate certificates)
7517 and then examining the cache for matches. This is probably
7518 the best we can do without throwing out X509_LOOKUP
7519 entirely (maybe later...).
7521 The X509_VERIFY_CTX structure has been enhanced considerably.
7523 All certificate lookup operations now go via a get_issuer()
7524 callback. Although this currently uses an X509_STORE it
7525 can be replaced by custom lookups. This is a simple way
7526 to bypass the X509_STORE hackery necessary to make this
7527 work and makes it possible to use more efficient techniques
7528 in future. A very simple version which uses a simple
7529 STACK for its trusted certificate store is also provided
7530 using X509_STORE_CTX_trusted_stack().
7532 The verify_cb() and verify() callbacks now have equivalents
7533 in the X509_STORE_CTX structure.
7535 X509_STORE_CTX also has a 'flags' field which can be used
7536 to customise the verify behaviour.
7539 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
7540 excludes S/MIME capabilities.
7543 *) When a certificate request is read in keep a copy of the
7544 original encoding of the signed data and use it when outputing
7545 again. Signatures then use the original encoding rather than
7546 a decoded, encoded version which may cause problems if the
7547 request is improperly encoded.
7550 *) For consistency with other BIO_puts implementations, call
7551 buffer_write(b, ...) directly in buffer_puts instead of calling
7554 In BIO_puts, increment b->num_write as in BIO_write.
7555 [Peter.Sylvester@EdelWeb.fr]
7557 *) Fix BN_mul_word for the case where the word is 0. (We have to use
7558 BN_zero, we may not return a BIGNUM with an array consisting of
7562 *) Avoid calling abort() from within the library when problems are
7563 detected, except if preprocessor symbols have been defined
7564 (such as REF_CHECK, BN_DEBUG etc.).
7567 *) New openssl application 'rsautl'. This utility can be
7568 used for low level RSA operations. DER public key
7569 BIO/fp routines also added.
7572 *) New Configure entry and patches for compiling on QNX 4.
7573 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
7575 *) A demo state-machine implementation was sponsored by
7576 Nuron (http://www.nuron.com/) and is now available in
7577 demos/state_machine.
7580 *) New options added to the 'dgst' utility for signature
7581 generation and verification.
7584 *) Unrecognized PKCS#7 content types are now handled via a
7585 catch all ASN1_TYPE structure. This allows unsupported
7586 types to be stored as a "blob" and an application can
7587 encode and decode it manually.
7590 *) Fix various signed/unsigned issues to make a_strex.c
7592 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
7594 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
7595 length if passed a buffer. ASN1_INTEGER_to_BN failed
7596 if passed a NULL BN and its argument was negative.
7597 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
7599 *) Modification to PKCS#7 encoding routines to output definite
7600 length encoding. Since currently the whole structures are in
7601 memory there's not real point in using indefinite length
7602 constructed encoding. However if OpenSSL is compiled with
7603 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
7606 *) Added BIO_vprintf() and BIO_vsnprintf().
7609 *) Added more prefixes to parse for in the the strings written
7610 through a logging bio, to cover all the levels that are available
7611 through syslog. The prefixes are now:
7613 PANIC, EMERG, EMR => LOG_EMERG
7614 ALERT, ALR => LOG_ALERT
7615 CRIT, CRI => LOG_CRIT
7616 ERROR, ERR => LOG_ERR
7617 WARNING, WARN, WAR => LOG_WARNING
7618 NOTICE, NOTE, NOT => LOG_NOTICE
7619 INFO, INF => LOG_INFO
7620 DEBUG, DBG => LOG_DEBUG
7622 and as before, if none of those prefixes are present at the
7623 beginning of the string, LOG_ERR is chosen.
7625 On Win32, the LOG_* levels are mapped according to this:
7627 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
7628 LOG_WARNING => EVENTLOG_WARNING_TYPE
7629 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
7633 *) Made it possible to reconfigure with just the configuration
7634 argument "reconf" or "reconfigure". The command line arguments
7635 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
7636 and are retrieved from there when reconfiguring.
7640 [Assar Westerlund <assar@sics.se>, Richard Levitte]
7642 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
7645 *) The obj_dat.pl script was messing up the sorting of object
7646 names. The reason was that it compared the quoted version
7647 of strings as a result "OCSP" > "OCSP Signing" because
7648 " > SPACE. Changed script to store unquoted versions of
7649 names and add quotes on output. It was also omitting some
7650 names from the lookup table if they were given a default
7651 value (that is if SN is missing it is given the same
7652 value as LN and vice versa), these are now added on the
7653 grounds that if an object has a name we should be able to
7654 look it up. Finally added warning output when duplicate
7655 short or long names are found.
7658 *) Changes needed for Tandem NSK.
7659 [Scott Uroff <scott@xypro.com>]
7661 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
7662 RSA_padding_check_SSLv23(), special padding was never detected
7663 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
7664 version rollback attacks was not effective.
7666 In s23_clnt.c, don't use special rollback-attack detection padding
7667 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
7668 client; similarly, in s23_srvr.c, don't do the rollback check if
7669 SSL 2.0 is the only protocol enabled in the server.
7672 *) Make it possible to get hexdumps of unprintable data with 'openssl
7673 asn1parse'. By implication, the functions ASN1_parse_dump() and
7674 BIO_dump_indent() are added.
7677 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
7678 these print out strings and name structures based on various
7679 flags including RFC2253 support and proper handling of
7680 multibyte characters. Added options to the 'x509' utility
7681 to allow the various flags to be set.
7684 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
7685 Also change the functions X509_cmp_current_time() and
7686 X509_gmtime_adj() work with an ASN1_TIME structure,
7687 this will enable certificates using GeneralizedTime in validity
7688 dates to be checked.
7691 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
7692 negative public key encodings) on by default,
7693 NO_NEG_PUBKEY_BUG can be set to disable it.
7696 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
7697 content octets. An i2c_ASN1_OBJECT is unnecessary because
7698 the encoding can be trivially obtained from the structure.
7701 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
7702 not read locks (CRYPTO_r_[un]lock).
7705 *) A first attempt at creating official support for shared
7706 libraries through configuration. I've kept it so the
7707 default is static libraries only, and the OpenSSL programs
7708 are always statically linked for now, but there are
7709 preparations for dynamic linking in place.
7710 This has been tested on Linux and Tru64.
7713 *) Randomness polling function for Win9x, as described in:
7714 Peter Gutmann, Software Generation of Practically Strong
7718 *) Fix so PRNG is seeded in req if using an already existing
7722 *) New options to smime application. -inform and -outform
7723 allow alternative formats for the S/MIME message including
7724 PEM and DER. The -content option allows the content to be
7725 specified separately. This should allow things like Netscape
7726 form signing output easier to verify.
7729 *) Fix the ASN1 encoding of tags using the 'long form'.
7732 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
7733 STRING types. These convert content octets to and from the
7734 underlying type. The actual tag and length octets are
7735 already assumed to have been read in and checked. These
7736 are needed because all other string types have virtually
7737 identical handling apart from the tag. By having versions
7738 of the ASN1 functions that just operate on content octets
7739 IMPLICIT tagging can be handled properly. It also allows
7740 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
7741 and ASN1_INTEGER are identical apart from the tag.
7744 *) Change the handling of OID objects as follows:
7746 - New object identifiers are inserted in objects.txt, following
7747 the syntax given in objects.README.
7748 - objects.pl is used to process obj_mac.num and create a new
7750 - obj_dat.pl is used to create a new obj_dat.h, using the data in
7753 This is currently kind of a hack, and the perl code in objects.pl
7754 isn't very elegant, but it works as I intended. The simplest way
7755 to check that it worked correctly is to look in obj_dat.h and
7756 check the array nid_objs and make sure the objects haven't moved
7757 around (this is important!). Additions are OK, as well as
7758 consistent name changes.
7761 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
7764 *) Addition of the command line parameter '-rand file' to 'openssl req'.
7765 The given file adds to whatever has already been seeded into the
7766 random pool through the RANDFILE configuration file option or
7767 environment variable, or the default random state file.
7770 *) mkstack.pl now sorts each macro group into lexical order.
7771 Previously the output order depended on the order the files
7772 appeared in the directory, resulting in needless rewriting
7776 *) Patches to make OpenSSL compile under Win32 again. Mostly
7777 work arounds for the VC++ problem that it treats func() as
7778 func(void). Also stripped out the parts of mkdef.pl that
7779 added extra typesafe functions: these no longer exist.
7782 *) Reorganisation of the stack code. The macros are now all
7783 collected in safestack.h . Each macro is defined in terms of
7784 a "stack macro" of the form SKM_<name>(type, a, b). The
7785 DEBUG_SAFESTACK is now handled in terms of function casts,
7786 this has the advantage of retaining type safety without the
7787 use of additional functions. If DEBUG_SAFESTACK is not defined
7788 then the non typesafe macros are used instead. Also modified the
7789 mkstack.pl script to handle the new form. Needs testing to see
7790 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
7791 the default if no major problems. Similar behaviour for ASN1_SET_OF
7792 and PKCS12_STACK_OF.
7795 *) When some versions of IIS use the 'NET' form of private key the
7796 key derivation algorithm is different. Normally MD5(password) is
7797 used as a 128 bit RC4 key. In the modified case
7798 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
7799 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
7800 as the old Netscape_RSA functions except they have an additional
7801 'sgckey' parameter which uses the modified algorithm. Also added
7802 an -sgckey command line option to the rsa utility. Thanks to
7803 Adrian Peck <bertie@ncipher.com> for posting details of the modified
7804 algorithm to openssl-dev.
7807 *) The evp_local.h macros were using 'c.##kname' which resulted in
7808 invalid expansion on some systems (SCO 5.0.5 for example).
7809 Corrected to 'c.kname'.
7810 [Phillip Porch <root@theporch.com>]
7812 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
7813 a STACK of email addresses from a certificate or request, these look
7814 in the subject name and the subject alternative name extensions and
7815 omit any duplicate addresses.
7818 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
7819 This makes DSA verification about 2 % faster.
7822 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
7823 (meaning that now 2^5 values will be precomputed, which is only 4 KB
7824 plus overhead for 1024 bit moduli).
7825 This makes exponentiations about 0.5 % faster for 1024 bit
7826 exponents (as measured by "openssl speed rsa2048").
7829 *) Rename memory handling macros to avoid conflicts with other
7831 Malloc => OPENSSL_malloc
7832 Malloc_locked => OPENSSL_malloc_locked
7833 Realloc => OPENSSL_realloc
7834 Free => OPENSSL_free
7837 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
7838 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
7841 *) CygWin32 support.
7842 [John Jarvie <jjarvie@newsguy.com>]
7844 *) The type-safe stack code has been rejigged. It is now only compiled
7845 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
7846 by default all type-specific stack functions are "#define"d back to
7847 standard stack functions. This results in more streamlined output
7848 but retains the type-safety checking possibilities of the original
7852 *) The STACK code has been cleaned up, and certain type declarations
7853 that didn't make a lot of sense have been brought in line. This has
7854 also involved a cleanup of sorts in safestack.h to more correctly
7855 map type-safe stack functions onto their plain stack counterparts.
7856 This work has also resulted in a variety of "const"ifications of
7857 lots of the code, especially "_cmp" operations which should normally
7858 be prototyped with "const" parameters anyway.
7861 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
7862 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
7863 (The PRNG state consists of two parts, the large pool 'state' and 'md',
7864 where all of 'md' is used each time the PRNG is used, but 'state'
7865 is used only indexed by a cyclic counter. As entropy may not be
7866 well distributed from the beginning, 'md' is important as a
7867 chaining variable. However, the output function chains only half
7868 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
7869 all of 'md', and seeding with STATE_SIZE dummy bytes will result
7870 in all of 'state' being rewritten, with the new values depending
7871 on virtually all of 'md'. This overcomes the 80 bit limitation.)
7874 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
7875 the handshake is continued after ssl_verify_cert_chain();
7876 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
7877 can lead to 'unexplainable' connection aborts later.
7878 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
7880 *) Major EVP API cipher revision.
7881 Add hooks for extra EVP features. This allows various cipher
7882 parameters to be set in the EVP interface. Support added for variable
7883 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
7884 setting of RC2 and RC5 parameters.
7886 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
7889 Remove lots of duplicated code from the EVP library. For example *every*
7890 cipher init() function handles the 'iv' in the same way according to the
7891 cipher mode. They also all do nothing if the 'key' parameter is NULL and
7892 for CFB and OFB modes they zero ctx->num.
7894 New functionality allows removal of S/MIME code RC2 hack.
7896 Most of the routines have the same form and so can be declared in terms
7899 By shifting this to the top level EVP_CipherInit() it can be removed from
7900 all individual ciphers. If the cipher wants to handle IVs or keys
7901 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
7904 Change lots of functions like EVP_EncryptUpdate() to now return a
7905 value: although software versions of the algorithms cannot fail
7906 any installed hardware versions can.
7909 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
7910 this option is set, tolerate broken clients that send the negotiated
7911 protocol version number instead of the requested protocol version
7915 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
7916 i.e. non-zero for export ciphersuites, zero otherwise.
7917 Previous versions had this flag inverted, inconsistent with
7918 rsa_tmp_cb (..._TMP_RSA_CB).
7919 [Bodo Moeller; problem reported by Amit Chopra]
7921 *) Add missing DSA library text string. Work around for some IIS
7922 key files with invalid SEQUENCE encoding.
7925 *) Add a document (doc/standards.txt) that list all kinds of standards
7926 and so on that are implemented in OpenSSL.
7929 *) Enhance c_rehash script. Old version would mishandle certificates
7930 with the same subject name hash and wouldn't handle CRLs at all.
7931 Added -fingerprint option to crl utility, to support new c_rehash
7935 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
7938 *) Fix for SSL server purpose checking. Server checking was
7939 rejecting certificates which had extended key usage present
7940 but no ssl client purpose.
7941 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
7943 *) Make PKCS#12 code work with no password. The PKCS#12 spec
7944 is a little unclear about how a blank password is handled.
7945 Since the password in encoded as a BMPString with terminating
7946 double NULL a zero length password would end up as just the
7947 double NULL. However no password at all is different and is
7948 handled differently in the PKCS#12 key generation code. NS
7949 treats a blank password as zero length. MSIE treats it as no
7950 password on export: but it will try both on import. We now do
7951 the same: PKCS12_parse() tries zero length and no password if
7952 the password is set to "" or NULL (NULL is now a valid password:
7953 it wasn't before) as does the pkcs12 application.
7956 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
7957 perror when PEM_read_bio_X509_REQ fails, the error message must
7958 be obtained from the error queue.
7961 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
7962 it in ERR_remove_state if appropriate, and change ERR_get_state
7963 accordingly to avoid race conditions (this is necessary because
7964 thread_hash is no longer constant once set).
7967 *) Bugfix for linux-elf makefile.one.
7970 *) RSA_get_default_method() will now cause a default
7971 RSA_METHOD to be chosen if one doesn't exist already.
7972 Previously this was only set during a call to RSA_new()
7973 or RSA_new_method(NULL) meaning it was possible for
7974 RSA_get_default_method() to return NULL.
7977 *) Added native name translation to the existing DSO code
7978 that will convert (if the flag to do so is set) filenames
7979 that are sufficiently small and have no path information
7980 into a canonical native form. Eg. "blah" converted to
7981 "libblah.so" or "blah.dll" etc.
7984 *) New function ERR_error_string_n(e, buf, len) which is like
7985 ERR_error_string(e, buf), but writes at most 'len' bytes
7986 including the 0 terminator. For ERR_error_string_n, 'buf'
7988 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
7990 *) CONF library reworked to become more general. A new CONF
7991 configuration file reader "class" is implemented as well as a
7992 new functions (NCONF_*, for "New CONF") to handle it. The now
7993 old CONF_* functions are still there, but are reimplemented to
7994 work in terms of the new functions. Also, a set of functions
7995 to handle the internal storage of the configuration data is
7996 provided to make it easier to write new configuration file
7997 reader "classes" (I can definitely see something reading a
7998 configuration file in XML format, for example), called _CONF_*,
7999 or "the configuration storage API"...
8001 The new configuration file reading functions are:
8003 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
8004 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
8006 NCONF_default, NCONF_WIN32
8008 NCONF_dump_fp, NCONF_dump_bio
8010 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
8011 NCONF_new creates a new CONF object. This works in the same way
8012 as other interfaces in OpenSSL, like the BIO interface.
8013 NCONF_dump_* dump the internal storage of the configuration file,
8014 which is useful for debugging. All other functions take the same
8015 arguments as the old CONF_* functions wth the exception of the
8016 first that must be a `CONF *' instead of a `LHASH *'.
8018 To make it easer to use the new classes with the old CONF_* functions,
8019 the function CONF_set_default_method is provided.
8022 *) Add '-tls1' option to 'openssl ciphers', which was already
8023 mentioned in the documentation but had not been implemented.
8024 (This option is not yet really useful because even the additional
8025 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
8028 *) Initial DSO code added into libcrypto for letting OpenSSL (and
8029 OpenSSL-based applications) load shared libraries and bind to
8030 them in a portable way.
8031 [Geoff Thorpe, with contributions from Richard Levitte]
8033 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
8035 *) Make sure _lrotl and _lrotr are only used with MSVC.
8037 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
8038 (the default implementation of RAND_status).
8040 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
8041 to '-clrext' (= clear extensions), as intended and documented.
8042 [Bodo Moeller; inconsistency pointed out by Michael Attili
8045 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
8046 was larger than the MD block size.
8047 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
8049 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
8050 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
8051 using the passed key: if the passed key was a private key the result
8052 of X509_print(), for example, would be to print out all the private key
8056 *) des_quad_cksum() byte order bug fix.
8057 [Ulf Möller, using the problem description in krb4-0.9.7, where
8058 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
8060 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
8062 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
8064 *) For easily testing in shell scripts whether some command
8065 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
8066 returns with exit code 0 iff no command of the given name is available.
8067 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
8068 the output goes to stdout and nothing is printed to stderr.
8069 Additional arguments are always ignored.
8071 Since for each cipher there is a command of the same name,
8072 the 'no-cipher' compilation switches can be tested this way.
8074 ('openssl no-XXX' is not able to detect pseudo-commands such
8075 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
8078 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
8081 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
8082 is set; it will be thrown away anyway because each handshake creates
8084 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
8085 to parameters -- in previous versions (since OpenSSL 0.9.3) the
8086 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
8087 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
8090 *) New s_client option -ign_eof: EOF at stdin is ignored, and
8091 'Q' and 'R' lose their special meanings (quit/renegotiate).
8092 This is part of what -quiet does; unlike -quiet, -ign_eof
8093 does not suppress any output.
8096 *) Add compatibility options to the purpose and trust code. The
8097 purpose X509_PURPOSE_ANY is "any purpose" which automatically
8098 accepts a certificate or CA, this was the previous behaviour,
8099 with all the associated security issues.
8101 X509_TRUST_COMPAT is the old trust behaviour: only and
8102 automatically trust self signed roots in certificate store. A
8103 new trust setting X509_TRUST_DEFAULT is used to specify that
8104 a purpose has no associated trust setting and it should instead
8105 use the value in the default purpose.
8108 *) Fix the PKCS#8 DSA private key code so it decodes keys again
8109 and fix a memory leak.
8112 *) In util/mkerr.pl (which implements 'make errors'), preserve
8113 reason strings from the previous version of the .c file, as
8114 the default to have only downcase letters (and digits) in
8115 automatically generated reasons codes is not always appropriate.
8118 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
8119 using strerror. Previously, ERR_reason_error_string() returned
8120 library names as reason strings for SYSerr; but SYSerr is a special
8121 case where small numbers are errno values, not library numbers.
8124 *) Add '-dsaparam' option to 'openssl dhparam' application. This
8125 converts DSA parameters into DH parameters. (When creating parameters,
8126 DSA_generate_parameters is used.)
8129 *) Include 'length' (recommended exponent length) in C code generated
8130 by 'openssl dhparam -C'.
8133 *) The second argument to set_label in perlasm was already being used
8134 so couldn't be used as a "file scope" flag. Moved to third argument
8138 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
8139 instead of RAND_bytes for encryption IVs and salts.
8142 *) Include RAND_status() into RAND_METHOD instead of implementing
8143 it only for md_rand.c Otherwise replacing the PRNG by calling
8144 RAND_set_rand_method would be impossible.
8147 *) Don't let DSA_generate_key() enter an infinite loop if the random
8148 number generation fails.
8151 *) New 'rand' application for creating pseudo-random output.
8154 *) Added configuration support for Linux/IA64
8155 [Rolf Haberrecker <rolf@suse.de>]
8157 *) Assembler module support for Mingw32.
8160 *) Shared library support for HPUX (in shlib/).
8161 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
8163 *) Shared library support for Solaris gcc.
8164 [Lutz Behnke <behnke@trustcenter.de>]
8166 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
8168 *) PKCS7_encrypt() was adding text MIME headers twice because they
8169 were added manually and by SMIME_crlf_copy().
8172 *) In bntest.c don't call BN_rand with zero bits argument.
8173 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
8175 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
8176 case was implemented. This caused BN_div_recp() to fail occasionally.
8179 *) Add an optional second argument to the set_label() in the perl
8180 assembly language builder. If this argument exists and is set
8181 to 1 it signals that the assembler should use a symbol whose
8182 scope is the entire file, not just the current function. This
8183 is needed with MASM which uses the format label:: for this scope.
8184 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
8186 *) Change the ASN1 types so they are typedefs by default. Before
8187 almost all types were #define'd to ASN1_STRING which was causing
8188 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
8192 *) Change names of new functions to the new get1/get0 naming
8193 convention: After 'get1', the caller owns a reference count
8194 and has to call ..._free; 'get0' returns a pointer to some
8195 data structure without incrementing reference counters.
8196 (Some of the existing 'get' functions increment a reference
8197 counter, some don't.)
8198 Similarly, 'set1' and 'add1' functions increase reference
8199 counters or duplicate objects.
8202 *) Allow for the possibility of temp RSA key generation failure:
8203 the code used to assume it always worked and crashed on failure.
8206 *) Fix potential buffer overrun problem in BIO_printf().
8207 [Ulf Möller, using public domain code by Patrick Powell; problem
8208 pointed out by David Sacerdote <das33@cornell.edu>]
8210 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
8211 RAND_egd() and RAND_status(). In the command line application,
8212 the EGD socket can be specified like a seed file using RANDFILE
8216 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
8217 Some CAs (e.g. Verisign) distribute certificates in this form.
8220 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
8221 list to exclude them. This means that no special compilation option
8222 is needed to use anonymous DH: it just needs to be included in the
8226 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
8227 EVP_MD_type. The old functionality is available in a new macro called
8228 EVP_MD_md(). Change code that uses it and update docs.
8231 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
8232 where the 'void *' argument is replaced by a function pointer argument.
8233 Previously 'void *' was abused to point to functions, which works on
8234 many platforms, but is not correct. As these functions are usually
8235 called by macros defined in OpenSSL header files, most source code
8236 should work without changes.
8239 *) <openssl/opensslconf.h> (which is created by Configure) now contains
8240 sections with information on -D... compiler switches used for
8241 compiling the library so that applications can see them. To enable
8242 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
8243 must be defined. E.g.,
8244 #define OPENSSL_ALGORITHM_DEFINES
8245 #include <openssl/opensslconf.h>
8246 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
8247 [Richard Levitte, Ulf and Bodo Möller]
8249 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
8253 *) Change the 'other' type in certificate aux info to a STACK_OF
8254 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
8255 the required ASN1 format: arbitrary types determined by an OID.
8258 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
8259 argument to 'req'. This is not because the function is newer or
8260 better than others it just uses the work 'NEW' in the certificate
8261 request header lines. Some software needs this.
8264 *) Reorganise password command line arguments: now passwords can be
8265 obtained from various sources. Delete the PEM_cb function and make
8266 it the default behaviour: i.e. if the callback is NULL and the
8267 usrdata argument is not NULL interpret it as a null terminated pass
8268 phrase. If usrdata and the callback are NULL then the pass phrase
8269 is prompted for as usual.
8272 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
8273 the support is automatically enabled. The resulting binaries will
8274 autodetect the card and use it if present.
8275 [Ben Laurie and Compaq Inc.]
8277 *) Work around for Netscape hang bug. This sends certificate request
8278 and server done in one record. Since this is perfectly legal in the
8279 SSL/TLS protocol it isn't a "bug" option and is on by default. See
8280 the bugs/SSLv3 entry for more info.
8283 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
8286 *) Add -rand argument to smime and pkcs12 applications and read/write
8290 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
8293 *) Add command line password options to the remaining applications.
8296 *) Bug fix for BN_div_recp() for numerators with an even number of
8300 *) More tests in bntest.c, and changed test_bn output.
8303 *) ./config recognizes MacOS X now.
8306 *) Bug fix for BN_div() when the first words of num and divsor are
8307 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
8310 *) Add support for various broken PKCS#8 formats, and command line
8311 options to produce them.
8314 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
8315 get temporary BIGNUMs from a BN_CTX.
8318 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
8322 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
8323 include a #define from the old name to the new. The original intent
8324 was that statically linked binaries could for example just call
8325 SSLeay_add_all_ciphers() to just add ciphers to the table and not
8326 link with digests. This never worked becayse SSLeay_add_all_digests()
8327 and SSLeay_add_all_ciphers() were in the same source file so calling
8328 one would link with the other. They are now in separate source files.
8331 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
8334 *) Use a less unusual form of the Miller-Rabin primality test (it used
8335 a binary algorithm for exponentiation integrated into the Miller-Rabin
8336 loop, our standard modexp algorithms are faster).
8339 *) Support for the EBCDIC character set completed.
8340 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
8342 *) Source code cleanups: use const where appropriate, eliminate casts,
8343 use void * instead of char * in lhash.
8346 *) Bugfix: ssl3_send_server_key_exchange was not restartable
8347 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
8348 this the server could overwrite ephemeral keys that the client
8352 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
8353 using 50 iterations of the Rabin-Miller test.
8355 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
8356 iterations of the Rabin-Miller test as required by the appendix
8357 to FIPS PUB 186[-1]) instead of DSA_is_prime.
8358 As BN_is_prime_fasttest includes trial division, DSA parameter
8359 generation becomes much faster.
8361 This implies a change for the callback functions in DSA_is_prime
8362 and DSA_generate_parameters: The callback function is called once
8363 for each positive witness in the Rabin-Miller test, not just
8364 occasionally in the inner loop; and the parameters to the
8365 callback function now provide an iteration count for the outer
8366 loop rather than for the current invocation of the inner loop.
8367 DSA_generate_parameters additionally can call the callback
8368 function with an 'iteration count' of -1, meaning that a
8369 candidate has passed the trial division test (when q is generated
8370 from an application-provided seed, trial division is skipped).
8373 *) New function BN_is_prime_fasttest that optionally does trial
8374 division before starting the Rabin-Miller test and has
8375 an additional BN_CTX * argument (whereas BN_is_prime always
8376 has to allocate at least one BN_CTX).
8377 'callback(1, -1, cb_arg)' is called when a number has passed the
8378 trial division stage.
8381 *) Fix for bug in CRL encoding. The validity dates weren't being handled
8385 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
8388 *) New function BN_pseudo_rand().
8391 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
8392 bignum version of BN_from_montgomery() with the working code from
8393 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
8397 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
8398 made it impossible to use the same SSL_SESSION data structure in
8399 SSL2 clients in multiple threads.
8402 *) The return value of RAND_load_file() no longer counts bytes obtained
8403 by stat(). RAND_load_file(..., -1) is new and uses the complete file
8404 to seed the PRNG (previously an explicit byte count was required).
8405 [Ulf Möller, Bodo Möller]
8407 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
8408 used (char *) instead of (void *) and had casts all over the place.
8411 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
8414 *) Retain source code compatibility for BN_prime_checks macro:
8415 BN_is_prime(..., BN_prime_checks, ...) now uses
8416 BN_prime_checks_for_size to determine the appropriate number of
8417 Rabin-Miller iterations.
8420 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
8421 DH_CHECK_P_NOT_SAFE_PRIME.
8422 (Check if this is true? OpenPGP calls them "strong".)
8425 *) Merge the functionality of "dh" and "gendh" programs into a new program
8426 "dhparam". The old programs are retained for now but will handle DH keys
8427 (instead of parameters) in future.
8430 *) Make the ciphers, s_server and s_client programs check the return values
8431 when a new cipher list is set.
8434 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
8435 ciphers. Before when the 56bit ciphers were enabled the sorting was
8438 The syntax for the cipher sorting has been extended to support sorting by
8439 cipher-strength (using the strength_bits hard coded in the tables).
8440 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
8442 Fix a bug in the cipher-command parser: when supplying a cipher command
8443 string with an "undefined" symbol (neither command nor alphanumeric
8444 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
8445 an error is flagged.
8447 Due to the strength-sorting extension, the code of the
8448 ssl_create_cipher_list() function was completely rearranged. I hope that
8449 the readability was also increased :-)
8450 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
8452 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
8453 for the first serial number and places 2 in the serial number file. This
8454 avoids problems when the root CA is created with serial number zero and
8455 the first user certificate has the same issuer name and serial number
8459 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
8460 the new code. Add documentation for this stuff.
8463 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
8464 X509_*() to X509at_*() on the grounds that they don't handle X509
8465 structures and behave in an analagous way to the X509v3 functions:
8466 they shouldn't be called directly but wrapper functions should be used
8469 So we also now have some wrapper functions that call the X509at functions
8470 when passed certificate requests. (TO DO: similar things can be done with
8471 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
8472 things. Some of these need some d2i or i2d and print functionality
8473 because they handle more complex structures.)
8476 *) Add missing #ifndefs that caused missing symbols when building libssl
8477 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
8478 NO_RSA in ssl/s2*.c.
8479 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
8481 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
8482 has a return value which indicates the quality of the random data
8483 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
8484 error queue. New function RAND_pseudo_bytes() generates output that is
8485 guaranteed to be unique but not unpredictable. RAND_add is like
8486 RAND_seed, but takes an extra argument for an entropy estimate
8487 (RAND_seed always assumes full entropy).
8490 *) Do more iterations of Rabin-Miller probable prime test (specifically,
8491 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
8492 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
8493 in crypto/bn/bn_prime.c for the complete table). This guarantees a
8494 false-positive rate of at most 2^-80 for random input.
8497 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
8500 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
8501 in the 0.9.5 release), this returns the chain
8502 from an X509_CTX structure with a dup of the stack and all
8503 the X509 reference counts upped: so the stack will exist
8504 after X509_CTX_cleanup() has been called. Modify pkcs12.c
8507 Also make SSL_SESSION_print() print out the verify return
8511 *) Add manpage for the pkcs12 command. Also change the default
8512 behaviour so MAC iteration counts are used unless the new
8513 -nomaciter option is used. This improves file security and
8514 only older versions of MSIE (4.0 for example) need it.
8517 *) Honor the no-xxx Configure options when creating .DEF files.
8520 *) Add PKCS#10 attributes to field table: challengePassword,
8521 unstructuredName and unstructuredAddress. These are taken from
8522 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
8523 international characters are used.
8525 More changes to X509_ATTRIBUTE code: allow the setting of types
8526 based on strings. Remove the 'loc' parameter when adding
8527 attributes because these will be a SET OF encoding which is sorted
8531 *) Initial changes to the 'req' utility to allow request generation
8532 automation. This will allow an application to just generate a template
8533 file containing all the field values and have req construct the
8536 Initial support for X509_ATTRIBUTE handling. Stacks of these are
8537 used all over the place including certificate requests and PKCS#7
8538 structures. They are currently handled manually where necessary with
8539 some primitive wrappers for PKCS#7. The new functions behave in a
8540 manner analogous to the X509 extension functions: they allow
8541 attributes to be looked up by NID and added.
8543 Later something similar to the X509V3 code would be desirable to
8544 automatically handle the encoding, decoding and printing of the
8545 more complex types. The string types like challengePassword can
8546 be handled by the string table functions.
8548 Also modified the multi byte string table handling. Now there is
8549 a 'global mask' which masks out certain types. The table itself
8550 can use the flag STABLE_NO_MASK to ignore the mask setting: this
8551 is useful when for example there is only one permissible type
8552 (as in countryName) and using the mask might result in no valid
8556 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
8557 SSL_get_peer_finished to allow applications to obtain the latest
8558 Finished messages sent to the peer or expected from the peer,
8559 respectively. (SSL_get_peer_finished is usually the Finished message
8560 actually received from the peer, otherwise the protocol will be aborted.)
8562 As the Finished message are message digests of the complete handshake
8563 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
8564 be used for external authentication procedures when the authentication
8565 provided by SSL/TLS is not desired or is not enough.
8568 *) Enhanced support for Alpha Linux is added. Now ./config checks if
8569 the host supports BWX extension and if Compaq C is present on the
8570 $PATH. Just exploiting of the BWX extension results in 20-30%
8571 performance kick for some algorithms, e.g. DES and RC4 to mention
8572 a couple. Compaq C in turn generates ~20% faster code for MD5 and
8576 *) Add support for MS "fast SGC". This is arguably a violation of the
8577 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
8578 weak crypto and after checking the certificate is SGC a second one
8579 with strong crypto. MS SGC stops the first handshake after receiving
8580 the server certificate message and sends a second client hello. Since
8581 a server will typically do all the time consuming operations before
8582 expecting any further messages from the client (server key exchange
8583 is the most expensive) there is little difference between the two.
8585 To get OpenSSL to support MS SGC we have to permit a second client
8586 hello message after we have sent server done. In addition we have to
8587 reset the MAC if we do get this second client hello.
8590 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
8591 if a DER encoded private key is RSA or DSA traditional format. Changed
8592 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
8593 format DER encoded private key. Newer code should use PKCS#8 format which
8594 has the key type encoded in the ASN1 structure. Added DER private key
8595 support to pkcs8 application.
8598 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
8599 ciphersuites has been selected (as required by the SSL 3/TLS 1
8600 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
8601 is set, we interpret this as a request to violate the specification
8602 (the worst that can happen is a handshake failure, and 'correct'
8603 behaviour would result in a handshake failure anyway).
8606 *) In SSL_CTX_add_session, take into account that there might be multiple
8607 SSL_SESSION structures with the same session ID (e.g. when two threads
8608 concurrently obtain them from an external cache).
8609 The internal cache can handle only one SSL_SESSION with a given ID,
8610 so if there's a conflict, we now throw out the old one to achieve
8614 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
8615 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
8616 some routines that use cipher OIDs: some ciphers do not have OIDs
8617 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
8621 *) Simplify the trust setting structure and code. Now we just have
8622 two sequences of OIDs for trusted and rejected settings. These will
8623 typically have values the same as the extended key usage extension
8624 and any application specific purposes.
8626 The trust checking code now has a default behaviour: it will just
8627 check for an object with the same NID as the passed id. Functions can
8628 be provided to override either the default behaviour or the behaviour
8629 for a given id. SSL client, server and email already have functions
8630 in place for compatibility: they check the NID and also return "trusted"
8631 if the certificate is self signed.
8634 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
8635 traditional format into an EVP_PKEY structure.
8638 *) Add a password callback function PEM_cb() which either prompts for
8639 a password if usr_data is NULL or otherwise assumes it is a null
8640 terminated password. Allow passwords to be passed on command line
8641 environment or config files in a few more utilities.
8644 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
8645 keys. Add some short names for PKCS#8 PBE algorithms and allow them
8646 to be specified on the command line for the pkcs8 and pkcs12 utilities.
8647 Update documentation.
8650 *) Support for ASN1 "NULL" type. This could be handled before by using
8651 ASN1_TYPE but there wasn't any function that would try to read a NULL
8652 and produce an error if it couldn't. For compatibility we also have
8653 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
8654 don't allocate anything because they don't need to.
8657 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
8659 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
8661 *) Rebuild of the memory allocation routines used by OpenSSL code and
8662 possibly others as well. The purpose is to make an interface that
8663 provide hooks so anyone can build a separate set of allocation and
8664 deallocation routines to be used by OpenSSL, for example memory
8665 pool implementations, or something else, which was previously hard
8666 since Malloc(), Realloc() and Free() were defined as macros having
8667 the values malloc, realloc and free, respectively (except for Win32
8668 compilations). The same is provided for memory debugging code.
8669 OpenSSL already comes with functionality to find memory leaks, but
8670 this gives people a chance to debug other memory problems.
8672 With these changes, a new set of functions and macros have appeared:
8674 CRYPTO_set_mem_debug_functions() [F]
8675 CRYPTO_get_mem_debug_functions() [F]
8676 CRYPTO_dbg_set_options() [F]
8677 CRYPTO_dbg_get_options() [F]
8678 CRYPTO_malloc_debug_init() [M]
8680 The memory debug functions are NULL by default, unless the library
8681 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
8682 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
8683 gives the standard debugging functions that come with OpenSSL) or
8684 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
8685 provided by the library user) must be used. When the standard
8686 debugging functions are used, CRYPTO_dbg_set_options can be used to
8687 request additional information:
8688 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
8689 the CRYPTO_MDEBUG_xxx macro when compiling the library.
8691 Also, things like CRYPTO_set_mem_functions will always give the
8692 expected result (the new set of functions is used for allocation
8693 and deallocation) at all times, regardless of platform and compiler
8696 To finish it up, some functions that were never use in any other
8697 way than through macros have a new API and new semantic:
8700 CRYPTO_dbg_realloc()
8703 All macros of value have retained their old syntax.
8704 [Richard Levitte and Bodo Moeller]
8706 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
8707 ordering of SMIMECapabilities wasn't in "strength order" and there
8708 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
8712 *) Some ASN1 types with illegal zero length encoding (INTEGER,
8713 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
8714 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
8716 *) Merge in my S/MIME library for OpenSSL. This provides a simple
8717 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
8718 functionality to handle multipart/signed properly) and a utility
8719 called 'smime' to call all this stuff. This is based on code I
8720 originally wrote for Celo who have kindly allowed it to be
8721 included in OpenSSL.
8724 *) Add variants des_set_key_checked and des_set_key_unchecked of
8725 des_set_key (aka des_key_sched). Global variable des_check_key
8726 decides which of these is called by des_set_key; this way
8727 des_check_key behaves as it always did, but applications and
8728 the library itself, which was buggy for des_check_key == 1,
8729 have a cleaner way to pick the version they need.
8732 *) New function PKCS12_newpass() which changes the password of a
8736 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
8737 dynamic mix. In both cases the ids can be used as an index into the
8738 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
8739 functions so they accept a list of the field values and the
8740 application doesn't need to directly manipulate the X509_TRUST
8744 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
8748 *) Modify the way the V3 extension code looks up extensions. This now
8749 works in a similar way to the object code: we have some "standard"
8750 extensions in a static table which is searched with OBJ_bsearch()
8751 and the application can add dynamic ones if needed. The file
8752 crypto/x509v3/ext_dat.h now has the info: this file needs to be
8753 updated whenever a new extension is added to the core code and kept
8754 in ext_nid order. There is a simple program 'tabtest.c' which checks
8755 this. New extensions are not added too often so this file can readily
8756 be maintained manually.
8758 There are two big advantages in doing things this way. The extensions
8759 can be looked up immediately and no longer need to be "added" using
8760 X509V3_add_standard_extensions(): this function now does nothing.
8761 [Side note: I get *lots* of email saying the extension code doesn't
8762 work because people forget to call this function]
8763 Also no dynamic allocation is done unless new extensions are added:
8764 so if we don't add custom extensions there is no need to call
8765 X509V3_EXT_cleanup().
8768 *) Modify enc utility's salting as follows: make salting the default. Add a
8769 magic header, so unsalted files fail gracefully instead of just decrypting
8770 to garbage. This is because not salting is a big security hole, so people
8771 should be discouraged from doing it.
8774 *) Fixes and enhancements to the 'x509' utility. It allowed a message
8775 digest to be passed on the command line but it only used this
8776 parameter when signing a certificate. Modified so all relevant
8777 operations are affected by the digest parameter including the
8778 -fingerprint and -x509toreq options. Also -x509toreq choked if a
8779 DSA key was used because it didn't fix the digest.
8782 *) Initial certificate chain verify code. Currently tests the untrusted
8783 certificates for consistency with the verify purpose (which is set
8784 when the X509_STORE_CTX structure is set up) and checks the pathlength.
8786 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
8787 this is because it will reject chains with invalid extensions whereas
8788 every previous version of OpenSSL and SSLeay made no checks at all.
8790 Trust code: checks the root CA for the relevant trust settings. Trust
8791 settings have an initial value consistent with the verify purpose: e.g.
8792 if the verify purpose is for SSL client use it expects the CA to be
8793 trusted for SSL client use. However the default value can be changed to
8794 permit custom trust settings: one example of this would be to only trust
8795 certificates from a specific "secure" set of CAs.
8797 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
8798 which should be used for version portability: especially since the
8799 verify structure is likely to change more often now.
8801 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
8802 to set them. If not set then assume SSL clients will verify SSL servers
8805 Two new options to the verify program: -untrusted allows a set of
8806 untrusted certificates to be passed in and -purpose which sets the
8807 intended purpose of the certificate. If a purpose is set then the
8808 new chain verify code is used to check extension consistency.
8811 *) Support for the authority information access extension.
8814 *) Modify RSA and DSA PEM read routines to transparently handle
8815 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
8816 public keys in a format compatible with certificate
8817 SubjectPublicKeyInfo structures. Unfortunately there were already
8818 functions called *_PublicKey_* which used various odd formats so
8819 these are retained for compatibility: however the DSA variants were
8820 never in a public release so they have been deleted. Changed dsa/rsa
8821 utilities to handle the new format: note no releases ever handled public
8822 keys so we should be OK.
8824 The primary motivation for this change is to avoid the same fiasco
8825 that dogs private keys: there are several incompatible private key
8826 formats some of which are standard and some OpenSSL specific and
8827 require various evil hacks to allow partial transparent handling and
8828 even then it doesn't work with DER formats. Given the option anything
8829 other than PKCS#8 should be dumped: but the other formats have to
8830 stay in the name of compatibility.
8832 With public keys and the benefit of hindsight one standard format
8833 is used which works with EVP_PKEY, RSA or DSA structures: though
8834 it clearly returns an error if you try to read the wrong kind of key.
8836 Added a -pubkey option to the 'x509' utility to output the public key.
8837 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
8838 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
8839 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
8840 that do the same as the EVP_PKEY_assign_*() except they up the
8841 reference count of the added key (they don't "swallow" the
8845 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
8846 CRLs would fail if the file contained no certificates or no CRLs:
8847 added a new function to read in both types and return the number
8848 read: this means that if none are read it will be an error. The
8849 DER versions of the certificate and CRL reader would always fail
8850 because it isn't possible to mix certificates and CRLs in DER format
8851 without choking one or the other routine. Changed this to just read
8852 a certificate: this is the best we can do. Also modified the code
8853 in apps/verify.c to take notice of return codes: it was previously
8854 attempting to read in certificates from NULL pointers and ignoring
8855 any errors: this is one reason why the cert and CRL reader seemed
8856 to work. It doesn't check return codes from the default certificate
8857 routines: these may well fail if the certificates aren't installed.
8860 *) Code to support otherName option in GeneralName.
8863 *) First update to verify code. Change the verify utility
8864 so it warns if it is passed a self signed certificate:
8865 for consistency with the normal behaviour. X509_verify
8866 has been modified to it will now verify a self signed
8867 certificate if *exactly* the same certificate appears
8868 in the store: it was previously impossible to trust a
8869 single self signed certificate. This means that:
8870 openssl verify ss.pem
8871 now gives a warning about a self signed certificate but
8872 openssl verify -CAfile ss.pem ss.pem
8876 *) For servers, store verify_result in SSL_SESSION data structure
8877 (and add it to external session representation).
8878 This is needed when client certificate verifications fails,
8879 but an application-provided verification callback (set by
8880 SSL_CTX_set_cert_verify_callback) allows accepting the session
8881 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
8882 but returns 1): When the session is reused, we have to set
8883 ssl->verify_result to the appropriate error code to avoid
8885 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
8887 *) Fix a bug in the new PKCS#7 code: it didn't consider the
8888 case in PKCS7_dataInit() where the signed PKCS7 structure
8889 didn't contain any existing data because it was being created.
8890 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
8892 *) Add a salt to the key derivation routines in enc.c. This
8893 forms the first 8 bytes of the encrypted file. Also add a
8894 -S option to allow a salt to be input on the command line.
8897 *) New function X509_cmp(). Oddly enough there wasn't a function
8898 to compare two certificates. We do this by working out the SHA1
8899 hash and comparing that. X509_cmp() will be needed by the trust
8903 *) SSL_get1_session() is like SSL_get_session(), but increments
8904 the reference count in the SSL_SESSION returned.
8905 [Geoff Thorpe <geoff@eu.c2.net>]
8907 *) Fix for 'req': it was adding a null to request attributes.
8908 Also change the X509_LOOKUP and X509_INFO code to handle
8909 certificate auxiliary information.
8912 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
8916 *) Add the possibility to add extra information to the memory leak
8917 detecting output, to form tracebacks, showing from where each
8918 allocation was originated: CRYPTO_push_info("constant string") adds
8919 the string plus current file name and line number to a per-thread
8920 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
8921 is like calling CYRPTO_pop_info() until the stack is empty.
8922 Also updated memory leak detection code to be multi-thread-safe.
8925 *) Add options -text and -noout to pkcs7 utility and delete the
8926 encryption options which never did anything. Update docs.
8929 *) Add options to some of the utilities to allow the pass phrase
8930 to be included on either the command line (not recommended on
8931 OSes like Unix) or read from the environment. Update the
8932 manpages and fix a few bugs.
8935 *) Add a few manpages for some of the openssl commands.
8938 *) Fix the -revoke option in ca. It was freeing up memory twice,
8939 leaking and not finding already revoked certificates.
8942 *) Extensive changes to support certificate auxiliary information.
8943 This involves the use of X509_CERT_AUX structure and X509_AUX
8944 functions. An X509_AUX function such as PEM_read_X509_AUX()
8945 can still read in a certificate file in the usual way but it
8946 will also read in any additional "auxiliary information". By
8947 doing things this way a fair degree of compatibility can be
8948 retained: existing certificates can have this information added
8949 using the new 'x509' options.
8951 Current auxiliary information includes an "alias" and some trust
8952 settings. The trust settings will ultimately be used in enhanced
8953 certificate chain verification routines: currently a certificate
8954 can only be trusted if it is self signed and then it is trusted
8958 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
8959 The problem was that one of the replacement routines had not been working
8960 since SSLeay releases. For now the offending routine has been replaced
8961 with non-optimised assembler. Even so, this now gives around 95%
8962 performance improvement for 1024 bit RSA signs.
8965 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
8966 handling. Most clients have the effective key size in bits equal to
8967 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
8968 A few however don't do this and instead use the size of the decrypted key
8969 to determine the RC2 key length and the AlgorithmIdentifier to determine
8970 the effective key length. In this case the effective key length can still
8971 be 40 bits but the key length can be 168 bits for example. This is fixed
8972 by manually forcing an RC2 key into the EVP_PKEY structure because the
8973 EVP code can't currently handle unusual RC2 key sizes: it always assumes
8974 the key length and effective key length are equal.
8977 *) Add a bunch of functions that should simplify the creation of
8978 X509_NAME structures. Now you should be able to do:
8979 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
8980 and have it automatically work out the correct field type and fill in
8981 the structures. The more adventurous can try:
8982 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
8983 and it will (hopefully) work out the correct multibyte encoding.
8986 *) Change the 'req' utility to use the new field handling and multibyte
8987 copy routines. Before the DN field creation was handled in an ad hoc
8988 way in req, ca, and x509 which was rather broken and didn't support
8989 BMPStrings or UTF8Strings. Since some software doesn't implement
8990 BMPStrings or UTF8Strings yet, they can be enabled using the config file
8991 using the dirstring_type option. See the new comment in the default
8992 openssl.cnf for more info.
8995 *) Make crypto/rand/md_rand.c more robust:
8996 - Assure unique random numbers after fork().
8997 - Make sure that concurrent threads access the global counter and
8998 md serializably so that we never lose entropy in them
8999 or use exactly the same state in multiple threads.
9000 Access to the large state is not always serializable because
9001 the additional locking could be a performance killer, and
9002 md should be large enough anyway.
9005 *) New file apps/app_rand.c with commonly needed functionality
9006 for handling the random seed file.
9008 Use the random seed file in some applications that previously did not:
9010 dsaparam -genkey (which also ignored its '-rand' option),
9013 x509 (when signing).
9014 Except on systems with /dev/urandom, it is crucial to have a random
9015 seed file at least for key creation, DSA signing, and for DH exchanges;
9016 for RSA signatures we could do without one.
9018 gendh and gendsa (unlike genrsa) used to read only the first byte
9019 of each file listed in the '-rand' option. The function as previously
9020 found in genrsa is now in app_rand.c and is used by all programs
9021 that support '-rand'.
9024 *) In RAND_write_file, use mode 0600 for creating files;
9025 don't just chmod when it may be too late.
9028 *) Report an error from X509_STORE_load_locations
9029 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
9032 *) New function ASN1_mbstring_copy() this copies a string in either
9033 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
9034 into an ASN1_STRING type. A mask of permissible types is passed
9035 and it chooses the "minimal" type to use or an error if not type
9039 *) Add function equivalents to the various macros in asn1.h. The old
9040 macros are retained with an M_ prefix. Code inside the library can
9041 use the M_ macros. External code (including the openssl utility)
9042 should *NOT* in order to be "shared library friendly".
9045 *) Add various functions that can check a certificate's extensions
9046 to see if it usable for various purposes such as SSL client,
9047 server or S/MIME and CAs of these types. This is currently
9048 VERY EXPERIMENTAL but will ultimately be used for certificate chain
9049 verification. Also added a -purpose flag to x509 utility to
9050 print out all the purposes.
9053 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
9057 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
9058 for, obtain and decode and extension and obtain its critical flag.
9059 This allows all the necessary extension code to be handled in a
9060 single function call.
9063 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
9064 platforms. See crypto/rc4/rc4_enc.c for further details.
9067 *) New -noout option to asn1parse. This causes no output to be produced
9068 its main use is when combined with -strparse and -out to extract data
9069 from a file (which may not be in ASN.1 format).
9072 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
9073 when producing the local key id.
9074 [Richard Levitte <levitte@stacken.kth.se>]
9076 *) New option -dhparam in s_server. This allows a DH parameter file to be
9077 stated explicitly. If it is not stated then it tries the first server
9078 certificate file. The previous behaviour hard coded the filename
9082 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
9083 a public key to be input or output. For example:
9084 openssl rsa -in key.pem -pubout -out pubkey.pem
9085 Also added necessary DSA public key functions to handle this.
9088 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
9089 in the message. This was handled by allowing
9090 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
9091 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
9093 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
9094 to the end of the strings whereas this didn't. This would cause problems
9095 if strings read with d2i_ASN1_bytes() were later modified.
9096 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
9098 *) Fix for base64 decode bug. When a base64 bio reads only one line of
9099 data and it contains EOF it will end up returning an error. This is
9100 caused by input 46 bytes long. The cause is due to the way base64
9101 BIOs find the start of base64 encoded data. They do this by trying a
9102 trial decode on each line until they find one that works. When they
9103 do a flag is set and it starts again knowing it can pass all the
9104 data directly through the decoder. Unfortunately it doesn't reset
9105 the context it uses. This means that if EOF is reached an attempt
9106 is made to pass two EOFs through the context and this causes the
9107 resulting error. This can also cause other problems as well. As is
9108 usual with these problems it takes *ages* to find and the fix is
9109 trivial: move one line.
9110 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
9112 *) Ugly workaround to get s_client and s_server working under Windows. The
9113 old code wouldn't work because it needed to select() on sockets and the
9114 tty (for keypresses and to see if data could be written). Win32 only
9115 supports select() on sockets so we select() with a 1s timeout on the
9116 sockets and then see if any characters are waiting to be read, if none
9117 are present then we retry, we also assume we can always write data to
9118 the tty. This isn't nice because the code then blocks until we've
9119 received a complete line of data and it is effectively polling the
9120 keyboard at 1s intervals: however it's quite a bit better than not
9121 working at all :-) A dedicated Windows application might handle this
9122 with an event loop for example.
9125 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
9126 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
9127 will be called when RSA_sign() and RSA_verify() are used. This is useful
9128 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
9129 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
9130 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
9131 This necessitated the support of an extra signature type NID_md5_sha1
9132 for SSL signatures and modifications to the SSL library to use it instead
9133 of calling RSA_public_decrypt() and RSA_private_encrypt().
9136 *) Add new -verify -CAfile and -CApath options to the crl program, these
9137 will lookup a CRL issuers certificate and verify the signature in a
9138 similar way to the verify program. Tidy up the crl program so it
9139 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
9140 less strict. It will now permit CRL extensions even if it is not
9141 a V2 CRL: this will allow it to tolerate some broken CRLs.
9144 *) Initialize all non-automatic variables each time one of the openssl
9145 sub-programs is started (this is necessary as they may be started
9146 multiple times from the "OpenSSL>" prompt).
9147 [Lennart Bang, Bodo Moeller]
9149 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
9150 removing all other RSA functionality (this is what NO_RSA does). This
9151 is so (for example) those in the US can disable those operations covered
9152 by the RSA patent while allowing storage and parsing of RSA keys and RSA
9156 *) Non-copying interface to BIO pairs.
9157 (still largely untested)
9160 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
9161 ASCII string. This was handled independently in various places before.
9164 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
9165 UTF8 strings a character at a time.
9168 *) Use client_version from client hello to select the protocol
9169 (s23_srvr.c) and for RSA client key exchange verification
9170 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
9173 *) Add various utility functions to handle SPKACs, these were previously
9174 handled by poking round in the structure internals. Added new function
9175 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
9176 print, verify and generate SPKACs. Based on an original idea from
9177 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
9180 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
9183 *) Allow the config file extension section to be overwritten on the
9184 command line. Based on an original idea from Massimiliano Pala
9185 <madwolf@comune.modena.it>. The new option is called -extensions
9186 and can be applied to ca, req and x509. Also -reqexts to override
9187 the request extensions in req and -crlexts to override the crl extensions
9191 *) Add new feature to the SPKAC handling in ca. Now you can include
9192 the same field multiple times by preceding it by "XXXX." for example:
9195 this is the same syntax as used in the req config file.
9198 *) Allow certificate extensions to be added to certificate requests. These
9199 are specified in a 'req_extensions' option of the req section of the
9200 config file. They can be printed out with the -text option to req but
9201 are otherwise ignored at present.
9204 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
9205 data read consists of only the final block it would not decrypted because
9206 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
9207 A misplaced 'break' also meant the decrypted final block might not be
9208 copied until the next read.
9211 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
9212 a few extra parameters to the DH structure: these will be useful if
9213 for example we want the value of 'q' or implement X9.42 DH.
9216 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
9217 provides hooks that allow the default DSA functions or functions on a
9218 "per key" basis to be replaced. This allows hardware acceleration and
9219 hardware key storage to be handled without major modification to the
9220 library. Also added low level modexp hooks and CRYPTO_EX structure and
9221 associated functions.
9224 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
9225 as "read only": it can't be written to and the buffer it points to will
9226 not be freed. Reading from a read only BIO is much more efficient than
9227 a normal memory BIO. This was added because there are several times when
9228 an area of memory needs to be read from a BIO. The previous method was
9229 to create a memory BIO and write the data to it, this results in two
9230 copies of the data and an O(n^2) reading algorithm. There is a new
9231 function BIO_new_mem_buf() which creates a read only memory BIO from
9232 an area of memory. Also modified the PKCS#7 routines to use read only
9236 *) Bugfix: ssl23_get_client_hello did not work properly when called in
9237 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
9238 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
9239 but a retry condition occured while trying to read the rest.
9242 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
9243 NID_pkcs7_encrypted by default: this was wrong since this should almost
9244 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
9245 the encrypted data type: this is a more sensible place to put it and it
9246 allows the PKCS#12 code to be tidied up that duplicated this
9250 *) Changed obj_dat.pl script so it takes its input and output files on
9251 the command line. This should avoid shell escape redirection problems
9255 *) Initial support for certificate extension requests, these are included
9256 in things like Xenroll certificate requests. Included functions to allow
9257 extensions to be obtained and added.
9260 *) -crlf option to s_client and s_server for sending newlines as
9261 CRLF (as required by many protocols).
9264 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
9266 *) Install libRSAglue.a when OpenSSL is built with RSAref.
9267 [Ralf S. Engelschall]
9269 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
9270 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
9272 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
9276 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
9277 DH parameters/keys (q is lost during that conversion, but the resulting
9278 DH parameters contain its length).
9280 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
9281 much faster than DH_generate_parameters (which creates parameters
9282 where p = 2*q + 1), and also the smaller q makes DH computations
9283 much more efficient (160-bit exponentiation instead of 1024-bit
9284 exponentiation); so this provides a convenient way to support DHE
9285 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
9286 utter importance to use
9287 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9289 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9290 when such DH parameters are used, because otherwise small subgroup
9291 attacks may become possible!
9294 *) Avoid memory leak in i2d_DHparams.
9297 *) Allow the -k option to be used more than once in the enc program:
9298 this allows the same encrypted message to be read by multiple recipients.
9301 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
9302 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
9303 it will always use the numerical form of the OID, even if it has a short
9307 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
9308 method only got called if p,q,dmp1,dmq1,iqmp components were present,
9309 otherwise bn_mod_exp was called. In the case of hardware keys for example
9310 no private key components need be present and it might store extra data
9311 in the RSA structure, which cannot be accessed from bn_mod_exp.
9312 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
9313 private key operations.
9316 *) Added support for SPARC Linux.
9319 *) pem_password_cb function type incompatibly changed from
9320 typedef int pem_password_cb(char *buf, int size, int rwflag);
9322 ....(char *buf, int size, int rwflag, void *userdata);
9323 so that applications can pass data to their callbacks:
9324 The PEM[_ASN1]_{read,write}... functions and macros now take an
9325 additional void * argument, which is just handed through whenever
9326 the password callback is called.
9327 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
9329 New function SSL_CTX_set_default_passwd_cb_userdata.
9331 Compatibility note: As many C implementations push function arguments
9332 onto the stack in reverse order, the new library version is likely to
9333 interoperate with programs that have been compiled with the old
9334 pem_password_cb definition (PEM_whatever takes some data that
9335 happens to be on the stack as its last argument, and the callback
9336 just ignores this garbage); but there is no guarantee whatsoever that
9339 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
9340 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
9341 problems not only on Windows, but also on some Unix platforms.
9342 To avoid problematic command lines, these definitions are now in an
9343 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
9344 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
9347 *) MIPS III/IV assembler module is reimplemented.
9350 *) More DES library cleanups: remove references to srand/rand and
9351 delete an unused file.
9354 *) Add support for the the free Netwide assembler (NASM) under Win32,
9355 since not many people have MASM (ml) and it can be hard to obtain.
9356 This is currently experimental but it seems to work OK and pass all
9357 the tests. Check out INSTALL.W32 for info.
9360 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
9361 without temporary keys kept an extra copy of the server key,
9362 and connections with temporary keys did not free everything in case
9366 *) New function RSA_check_key and new openssl rsa option -check
9367 for verifying the consistency of RSA keys.
9368 [Ulf Moeller, Bodo Moeller]
9370 *) Various changes to make Win32 compile work:
9371 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
9372 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
9373 comparison" warnings.
9374 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
9377 *) Add a debugging option to PKCS#5 v2 key generation function: when
9378 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
9379 derived keys are printed to stderr.
9382 *) Copy the flags in ASN1_STRING_dup().
9383 [Roman E. Pavlov <pre@mo.msk.ru>]
9385 *) The x509 application mishandled signing requests containing DSA
9386 keys when the signing key was also DSA and the parameters didn't match.
9388 It was supposed to omit the parameters when they matched the signing key:
9389 the verifying software was then supposed to automatically use the CA's
9390 parameters if they were absent from the end user certificate.
9392 Omitting parameters is no longer recommended. The test was also
9393 the wrong way round! This was probably due to unusual behaviour in
9394 EVP_cmp_parameters() which returns 1 if the parameters match.
9395 This meant that parameters were omitted when they *didn't* match and
9396 the certificate was useless. Certificates signed with 'ca' didn't have
9398 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
9400 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
9401 The interface is as follows:
9402 Applications can use
9403 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
9404 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
9405 "off" is now the default.
9406 The library internally uses
9407 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
9408 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
9409 to disable memory-checking temporarily.
9411 Some inconsistent states that previously were possible (and were
9412 even the default) are now avoided.
9414 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
9415 with each memory chunk allocated; this is occasionally more helpful
9416 than just having a counter.
9418 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
9420 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
9424 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
9425 which largely parallels "options", but is for changing API behaviour,
9426 whereas "options" are about protocol behaviour.
9427 Initial "mode" flags are:
9429 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
9430 a single record has been written.
9431 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
9432 retries use the same buffer location.
9433 (But all of the contents must be
9437 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
9440 *) Fix problems with no-hmac etc.
9441 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
9443 *) New functions RSA_get_default_method(), RSA_set_method() and
9444 RSA_get_method(). These allows replacement of RSA_METHODs without having
9445 to mess around with the internals of an RSA structure.
9448 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
9449 Also really enable memory leak checks in openssl.c and in some
9451 [Chad C. Mulligan, Bodo Moeller]
9453 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
9454 up the length of negative integers. This has now been simplified to just
9455 store the length when it is first determined and use it later, rather
9456 than trying to keep track of where data is copied and updating it to
9458 [Steve Henson, reported by Brien Wheeler
9459 <bwheeler@authentica-security.com>]
9461 *) Add a new function PKCS7_signatureVerify. This allows the verification
9462 of a PKCS#7 signature but with the signing certificate passed to the
9463 function itself. This contrasts with PKCS7_dataVerify which assumes the
9464 certificate is present in the PKCS#7 structure. This isn't always the
9465 case: certificates can be omitted from a PKCS#7 structure and be
9466 distributed by "out of band" means (such as a certificate database).
9469 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
9470 function prototypes in pem.h, also change util/mkdef.pl to add the
9471 necessary function names.
9474 *) mk1mf.pl (used by Windows builds) did not properly read the
9475 options set by Configure in the top level Makefile, and Configure
9476 was not even able to write more than one option correctly.
9477 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
9480 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
9481 file to be loaded from a BIO or FILE pointer. The BIO version will
9482 for example allow memory BIOs to contain config info.
9485 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
9486 Whoever hopes to achieve shared-library compatibility across versions
9487 must use this, not the compile-time macro.
9488 (Exercise 0.9.4: Which is the minimum library version required by
9490 Note: All this applies only to multi-threaded programs, others don't
9494 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
9495 through a BIO pair triggered the default case, i.e.
9496 SSLerr(...,SSL_R_UNKNOWN_STATE).
9499 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
9500 can use the SSL library even if none of the specific BIOs is
9504 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
9505 for the encoded length.
9506 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
9508 *) Add initial documentation of the X509V3 functions.
9511 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
9512 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
9513 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
9514 secure PKCS#8 private key format with a high iteration count.
9517 *) Fix determination of Perl interpreter: A perl or perl5
9518 _directory_ in $PATH was also accepted as the interpreter.
9519 [Ralf S. Engelschall]
9521 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
9522 wrong with it but it was very old and did things like calling
9523 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
9527 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
9528 to use the new extension code.
9531 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
9532 with macros. This should make it easier to change their form, add extra
9533 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
9537 *) Add to configuration table a new entry that can specify an alternative
9538 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
9539 according to Mark Crispin <MRC@Panda.COM>.
9543 *) DES CBC did not update the IV. Weird.
9546 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
9547 Changing the behaviour of the former might break existing programs --
9548 where IV updating is needed, des_ncbc_encrypt can be used.
9551 *) When bntest is run from "make test" it drives bc to check its
9552 calculations, as well as internally checking them. If an internal check
9553 fails, it needs to cause bc to give a non-zero result or make test carries
9554 on without noticing the failure. Fixed.
9557 *) DES library cleanups.
9560 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
9561 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
9562 ciphers. NOTE: although the key derivation function has been verified
9563 against some published test vectors it has not been extensively tested
9564 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
9568 *) Instead of "mkdir -p", which is not fully portable, use new
9569 Perl script "util/mkdir-p.pl".
9572 *) Rewrite the way password based encryption (PBE) is handled. It used to
9573 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
9574 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
9575 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
9576 the 'parameter' field of the AlgorithmIdentifier is passed to the
9577 underlying key generation function so it must do its own ASN1 parsing.
9578 This has also changed the EVP_PBE_CipherInit() function which now has a
9579 'parameter' argument instead of literal salt and iteration count values
9580 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
9583 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
9584 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
9585 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
9586 KEY" because this clashed with PKCS#8 unencrypted string. Since this
9587 value was just used as a "magic string" and not used directly its
9588 value doesn't matter.
9591 *) Introduce some semblance of const correctness to BN. Shame C doesn't
9595 *) "linux-sparc64" configuration (ultrapenguin).
9596 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
9597 "linux-sparc" configuration.
9598 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
9600 *) config now generates no-xxx options for missing ciphers.
9603 *) Support the EBCDIC character set (work in progress).
9604 File ebcdic.c not yet included because it has a different license.
9605 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
9607 *) Support BS2000/OSD-POSIX.
9608 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
9610 *) Make callbacks for key generation use void * instead of char *.
9613 *) Make S/MIME samples compile (not yet tested).
9616 *) Additional typesafe stacks.
9619 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
9623 Changes between 0.9.3 and 0.9.3a [29 May 1999]
9625 *) New configuration variant "sco5-gcc".
9627 *) Updated some demos.
9628 [Sean O Riordain, Wade Scholine]
9630 *) Add missing BIO_free at exit of pkcs12 application.
9633 *) Fix memory leak in conf.c.
9636 *) Updates for Win32 to assembler version of MD5.
9639 *) Set #! path to perl in apps/der_chop to where we found it
9640 instead of using a fixed path.
9643 *) SHA library changes for irix64-mips4-cc.
9646 *) Improvements for VMS support.
9650 Changes between 0.9.2b and 0.9.3 [24 May 1999]
9652 *) Bignum library bug fix. IRIX 6 passes "make test" now!
9653 This also avoids the problems with SC4.2 and unpatched SC5.
9654 [Andy Polyakov <appro@fy.chalmers.se>]
9656 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
9657 These are required because of the typesafe stack would otherwise break
9658 existing code. If old code used a structure member which used to be STACK
9659 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
9660 sk_num or sk_value it would produce an error because the num, data members
9661 are not present in STACK_OF. Now it just produces a warning. sk_set
9662 replaces the old method of assigning a value to sk_value
9663 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
9664 that does this will no longer work (and should use sk_set instead) but
9665 this could be regarded as a "questionable" behaviour anyway.
9668 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
9669 correctly handle encrypted S/MIME data.
9672 *) Change type of various DES function arguments from des_cblock
9673 (which means, in function argument declarations, pointer to char)
9674 to des_cblock * (meaning pointer to array with 8 char elements),
9675 which allows the compiler to do more typechecking; it was like
9676 that back in SSLeay, but with lots of ugly casts.
9678 Introduce new type const_des_cblock.
9681 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
9682 problems: find RecipientInfo structure that matches recipient certificate
9683 and initialise the ASN1 structures properly based on passed cipher.
9686 *) Belatedly make the BN tests actually check the results.
9689 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
9690 to and from BNs: it was completely broken. New compilation option
9691 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
9692 key elements as negative integers.
9695 *) Reorganize and speed up MD5.
9696 [Andy Polyakov <appro@fy.chalmers.se>]
9699 [Richard Levitte <richard@levitte.org>]
9701 *) New option -out to asn1parse to allow the parsed structure to be
9702 output to a file. This is most useful when combined with the -strparse
9703 option to examine the output of things like OCTET STRINGS.
9706 *) Make SSL library a little more fool-proof by not requiring any longer
9707 that SSL_set_{accept,connect}_state be called before
9708 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
9709 in many applications because usually everything *appeared* to work as
9710 intended anyway -- now it really works as intended).
9713 *) Move openssl.cnf out of lib/.
9716 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
9717 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
9718 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
9719 [Ralf S. Engelschall]
9721 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
9722 handle PKCS#7 enveloped data properly.
9723 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
9725 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
9726 copying pointers. The cert_st handling is changed by this in
9727 various ways (and thus what used to be known as ctx->default_cert
9728 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
9729 any longer when s->cert does not give us what we need).
9730 ssl_cert_instantiate becomes obsolete by this change.
9731 As soon as we've got the new code right (possibly it already is?),
9732 we have solved a couple of bugs of the earlier code where s->cert
9733 was used as if it could not have been shared with other SSL structures.
9735 Note that using the SSL API in certain dirty ways now will result
9736 in different behaviour than observed with earlier library versions:
9737 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
9738 does not influence s as it used to.
9740 In order to clean up things more thoroughly, inside SSL_SESSION
9741 we don't use CERT any longer, but a new structure SESS_CERT
9742 that holds per-session data (if available); currently, this is
9743 the peer's certificate chain and, for clients, the server's certificate
9744 and temporary key. CERT holds only those values that can have
9745 meaningful defaults in an SSL_CTX.
9748 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
9749 from the internal representation. Various PKCS#7 fixes: remove some
9750 evil casts and set the enc_dig_alg field properly based on the signing
9754 *) Allow PKCS#12 password to be set from the command line or the
9755 environment. Let 'ca' get its config file name from the environment
9756 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
9760 *) Allow certificate policies extension to use an IA5STRING for the
9761 organization field. This is contrary to the PKIX definition but
9762 VeriSign uses it and IE5 only recognises this form. Document 'x509'
9766 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
9767 without disallowing inline assembler and the like for non-pedantic builds.
9770 *) Support Borland C++ builder.
9771 [Janez Jere <jj@void.si>, modified by Ulf Möller]
9776 *) SHA-1 cleanups and performance enhancements.
9777 [Andy Polyakov <appro@fy.chalmers.se>]
9779 *) Sparc v8plus assembler for the bignum library.
9780 [Andy Polyakov <appro@fy.chalmers.se>]
9782 *) Accept any -xxx and +xxx compiler options in Configure.
9785 *) Update HPUX configuration.
9788 *) Add missing sk_<type>_unshift() function to safestack.h
9789 [Ralf S. Engelschall]
9791 *) New function SSL_CTX_use_certificate_chain_file that sets the
9792 "extra_cert"s in addition to the certificate. (This makes sense
9793 only for "PEM" format files, as chains as a whole are not
9797 *) Support verify_depth from the SSL API.
9798 x509_vfy.c had what can be considered an off-by-one-error:
9799 Its depth (which was not part of the external interface)
9800 was actually counting the number of certificates in a chain;
9801 now it really counts the depth.
9804 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
9805 instead of X509err, which often resulted in confusing error
9806 messages since the error codes are not globally unique
9807 (e.g. an alleged error in ssl3_accept when a certificate
9808 didn't match the private key).
9810 *) New function SSL_CTX_set_session_id_context that allows to set a default
9811 value (so that you don't need SSL_set_session_id_context for each
9812 connection using the SSL_CTX).
9815 *) OAEP decoding bug fix.
9818 *) Support INSTALL_PREFIX for package builders, as proposed by
9822 *) New Configure options "threads" and "no-threads". For systems
9823 where the proper compiler options are known (currently Solaris
9824 and Linux), "threads" is the default.
9827 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
9830 *) Install various scripts to $(OPENSSLDIR)/misc, not to
9831 $(INSTALLTOP)/bin -- they shouldn't clutter directories
9832 such as /usr/local/bin.
9835 *) "make linux-shared" to build shared libraries.
9836 [Niels Poppe <niels@netbox.org>]
9838 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
9841 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
9842 extension adding in x509 utility.
9845 *) Remove NOPROTO sections and error code comments.
9848 *) Partial rewrite of the DEF file generator to now parse the ANSI
9852 *) New Configure options --prefix=DIR and --openssldir=DIR.
9855 *) Complete rewrite of the error code script(s). It is all now handled
9856 by one script at the top level which handles error code gathering,
9857 header rewriting and C source file generation. It should be much better
9858 than the old method: it now uses a modified version of Ulf's parser to
9859 read the ANSI prototypes in all header files (thus the old K&R definitions
9860 aren't needed for error creation any more) and do a better job of
9861 translating function codes into names. The old 'ASN1 error code imbedded
9862 in a comment' is no longer necessary and it doesn't use .err files which
9863 have now been deleted. Also the error code call doesn't have to appear all
9864 on one line (which resulted in some large lines...).
9867 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
9870 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
9871 0 (which usually indicates a closed connection), but continue reading.
9874 *) Fix some race conditions.
9877 *) Add support for CRL distribution points extension. Add Certificate
9878 Policies and CRL distribution points documentation.
9881 *) Move the autogenerated header file parts to crypto/opensslconf.h.
9884 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
9885 8 of keying material. Merlin has also confirmed interop with this fix
9886 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
9887 [Merlin Hughes <merlin@baltimore.ie>]
9889 *) Fix lots of warnings.
9890 [Richard Levitte <levitte@stacken.kth.se>]
9892 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
9893 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
9894 [Richard Levitte <levitte@stacken.kth.se>]
9896 *) Fix problems with sizeof(long) == 8.
9897 [Andy Polyakov <appro@fy.chalmers.se>]
9899 *) Change functions to ANSI C.
9902 *) Fix typos in error codes.
9903 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
9905 *) Remove defunct assembler files from Configure.
9908 *) SPARC v8 assembler BIGNUM implementation.
9909 [Andy Polyakov <appro@fy.chalmers.se>]
9911 *) Support for Certificate Policies extension: both print and set.
9912 Various additions to support the r2i method this uses.
9915 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
9916 return a const string when you are expecting an allocated buffer.
9919 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
9920 types DirectoryString and DisplayText.
9923 *) Add code to allow r2i extensions to access the configuration database,
9924 add an LHASH database driver and add several ctx helper functions.
9927 *) Fix an evil bug in bn_expand2() which caused various BN functions to
9928 fail when they extended the size of a BIGNUM.
9931 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
9932 support typesafe stack.
9935 *) Fix typo in SSL_[gs]et_options().
9936 [Nils Frostberg <nils@medcom.se>]
9938 *) Delete various functions and files that belonged to the (now obsolete)
9939 old X509V3 handling code.
9942 *) New Configure option "rsaref".
9945 *) Don't auto-generate pem.h.
9948 *) Introduce type-safe ASN.1 SETs.
9951 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
9952 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
9954 *) Introduce type-safe STACKs. This will almost certainly break lots of code
9955 that links with OpenSSL (well at least cause lots of warnings), but fear
9956 not: the conversion is trivial, and it eliminates loads of evil casts. A
9957 few STACKed things have been converted already. Feel free to convert more.
9958 In the fullness of time, I'll do away with the STACK type altogether.
9961 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
9962 specified in <certfile> by updating the entry in the index.txt file.
9963 This way one no longer has to edit the index.txt file manually for
9964 revoking a certificate. The -revoke option does the gory details now.
9965 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
9967 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
9968 `-text' option at all and this way the `-noout -text' combination was
9969 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
9970 [Ralf S. Engelschall]
9972 *) Make sure a corresponding plain text error message exists for the
9973 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
9974 verify callback function determined that a certificate was revoked.
9975 [Ralf S. Engelschall]
9977 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
9978 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
9979 all available cipers including rc5, which was forgotten until now.
9980 In order to let the testing shell script know which algorithms
9981 are available, a new (up to now undocumented) command
9982 "openssl list-cipher-commands" is used.
9985 *) Bugfix: s_client occasionally would sleep in select() when
9986 it should have checked SSL_pending() first.
9989 *) New functions DSA_do_sign and DSA_do_verify to provide access to
9990 the raw DSA values prior to ASN.1 encoding.
9993 *) Tweaks to Configure
9994 [Niels Poppe <niels@netbox.org>]
9996 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
10000 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
10003 *) New config option to avoid instructions that are illegal on the 80386.
10004 The default code is faster, but requires at least a 486.
10007 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
10008 SSL2_SERVER_VERSION (not used at all) macros, which are now the
10009 same as SSL2_VERSION anyway.
10012 *) New "-showcerts" option for s_client.
10015 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
10016 application. Various cleanups and fixes.
10019 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
10020 modify error routines to work internally. Add error codes and PBE init
10021 to library startup routines.
10024 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
10025 packing functions to asn1 and evp. Changed function names and error
10026 codes along the way.
10029 *) PKCS12 integration: and so it begins... First of several patches to
10030 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
10031 objects to objects.h
10034 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
10035 and display support for Thawte strong extranet extension.
10038 *) Add LinuxPPC support.
10039 [Jeff Dubrule <igor@pobox.org>]
10041 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
10042 bn_div_words in alpha.s.
10043 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
10045 *) Make sure the RSA OAEP test is skipped under -DRSAref because
10046 OAEP isn't supported when OpenSSL is built with RSAref.
10047 [Ulf Moeller <ulf@fitug.de>]
10049 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
10050 so they no longer are missing under -DNOPROTO.
10051 [Soren S. Jorvang <soren@t.dk>]
10054 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
10056 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
10057 doesn't work when the session is reused. Coming soon!
10060 *) Fix a security hole, that allows sessions to be reused in the wrong
10061 context thus bypassing client cert protection! All software that uses
10062 client certs and session caches in multiple contexts NEEDS PATCHING to
10063 allow session reuse! A fuller solution is in the works.
10064 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
10066 *) Some more source tree cleanups (removed obsolete files
10067 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
10068 permission on "config" script to be executable) and a fix for the INSTALL
10070 [Ulf Moeller <ulf@fitug.de>]
10072 *) Remove some legacy and erroneous uses of malloc, free instead of
10074 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
10076 *) Make rsa_oaep_test return non-zero on error.
10077 [Ulf Moeller <ulf@fitug.de>]
10079 *) Add support for native Solaris shared libraries. Configure
10080 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
10081 if someone would make that last step automatic.
10082 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
10084 *) ctx_size was not built with the right compiler during "make links". Fixed.
10087 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
10088 except NULL ciphers". This means the default cipher list will no longer
10089 enable NULL ciphers. They need to be specifically enabled e.g. with
10090 the string "DEFAULT:eNULL".
10093 *) Fix to RSA private encryption routines: if p < q then it would
10094 occasionally produce an invalid result. This will only happen with
10095 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
10098 *) Be less restrictive and allow also `perl util/perlpath.pl
10099 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
10100 because this way one can also use an interpreter named `perl5' (which is
10101 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
10102 installed as `perl').
10103 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10105 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
10106 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10108 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
10109 advapi32.lib to Win32 build and change the pem test comparision
10110 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
10111 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
10112 and crypto/des/ede_cbcm_enc.c.
10115 *) DES quad checksum was broken on big-endian architectures. Fixed.
10118 *) Comment out two functions in bio.h that aren't implemented. Fix up the
10119 Win32 test batch file so it (might) work again. The Win32 test batch file
10120 is horrible: I feel ill....
10123 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
10124 in e_os.h. Audit of header files to check ANSI and non ANSI
10125 sections: 10 functions were absent from non ANSI section and not exported
10126 from Windows DLLs. Fixed up libeay.num for new functions.
10129 *) Make `openssl version' output lines consistent.
10130 [Ralf S. Engelschall]
10132 *) Fix Win32 symbol export lists for BIO functions: Added
10133 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
10134 to ms/libeay{16,32}.def.
10135 [Ralf S. Engelschall]
10137 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
10138 fine under Unix and passes some trivial tests I've now added. But the
10139 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
10140 added to make sure no one expects that this stuff really works in the
10141 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
10142 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
10144 [Ralf S. Engelschall]
10146 *) Fix the generation of two part addresses in perl.
10147 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
10149 *) Add config entry for Linux on MIPS.
10150 [John Tobey <jtobey@channel1.com>]
10152 *) Make links whenever Configure is run, unless we are on Windoze.
10155 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
10156 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
10160 *) Add a useful kludge to allow package maintainers to specify compiler and
10161 other platforms details on the command line without having to patch the
10162 Configure script everytime: One now can use ``perl Configure
10163 <id>:<details>'', i.e. platform ids are allowed to have details appended
10164 to them (seperated by colons). This is treated as there would be a static
10165 pre-configured entry in Configure's %table under key <id> with value
10166 <details> and ``perl Configure <id>'' is called. So, when you want to
10167 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
10168 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
10169 now, which overrides the FreeBSD-elf entry on-the-fly.
10170 [Ralf S. Engelschall]
10172 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
10175 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
10176 on the `perl Configure ...' command line. This way one can compile
10177 OpenSSL libraries with Position Independent Code (PIC) which is needed
10178 for linking it into DSOs.
10179 [Ralf S. Engelschall]
10181 *) Remarkably, export ciphers were totally broken and no-one had noticed!
10185 *) Cleaned up the LICENSE document: The official contact for any license
10186 questions now is the OpenSSL core team under openssl-core@openssl.org.
10187 And add a paragraph about the dual-license situation to make sure people
10188 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
10189 to the OpenSSL toolkit.
10190 [Ralf S. Engelschall]
10192 *) General source tree makefile cleanups: Made `making xxx in yyy...'
10193 display consistent in the source tree and replaced `/bin/rm' by `rm'.
10194 Additonally cleaned up the `make links' target: Remove unnecessary
10195 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
10196 to speed processing and no longer clutter the display with confusing
10197 stuff. Instead only the actually done links are displayed.
10198 [Ralf S. Engelschall]
10200 *) Permit null encryption ciphersuites, used for authentication only. It used
10201 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
10202 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
10206 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
10207 signed attributes when verifying signatures (this would break them),
10208 the detached data encoding was wrong and public keys obtained using
10209 X509_get_pubkey() weren't freed.
10212 *) Add text documentation for the BUFFER functions. Also added a work around
10213 to a Win95 console bug. This was triggered by the password read stuff: the
10214 last character typed gets carried over to the next fread(). If you were
10215 generating a new cert request using 'req' for example then the last
10216 character of the passphrase would be CR which would then enter the first
10220 *) Added the new `Includes OpenSSL Cryptography Software' button as
10221 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
10222 button and can be used by applications based on OpenSSL to show the
10223 relationship to the OpenSSL project.
10224 [Ralf S. Engelschall]
10226 *) Remove confusing variables in function signatures in files
10227 ssl/ssl_lib.c and ssl/ssl.h.
10228 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10230 *) Don't install bss_file.c under PREFIX/include/
10231 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10233 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
10234 functions that return function pointers and has support for NT specific
10235 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
10236 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
10237 unsigned to signed types: this was killing the Win32 compile.
10240 *) Add new certificate file to stack functions,
10241 SSL_add_dir_cert_subjects_to_stack() and
10242 SSL_add_file_cert_subjects_to_stack(). These largely supplant
10243 SSL_load_client_CA_file(), and can be used to add multiple certs easily
10244 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
10245 This means that Apache-SSL and similar packages don't have to mess around
10246 to add as many CAs as they want to the preferred list.
10249 *) Experiment with doxygen documentation. Currently only partially applied to
10251 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
10252 openssl.doxy as the configuration file.
10255 *) Get rid of remaining C++-style comments which strict C compilers hate.
10256 [Ralf S. Engelschall, pointed out by Carlos Amengual]
10258 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
10259 compiled in by default: it has problems with large keys.
10262 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
10263 DH private keys and/or callback functions which directly correspond to
10264 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
10265 is needed for applications which have to configure certificates on a
10266 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
10268 For the RSA certificate situation is makes no difference, but
10269 for the DSA certificate situation this fixes the "no shared cipher"
10270 problem where the OpenSSL cipher selection procedure failed because the
10271 temporary keys were not overtaken from the context and the API provided
10272 no way to reconfigure them.
10273 The new functions now let applications reconfigure the stuff and they
10274 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
10275 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
10276 non-public-API function ssl_cert_instantiate() is used as a helper
10277 function and also to reduce code redundancy inside ssl_rsa.c.
10278 [Ralf S. Engelschall]
10280 *) Move s_server -dcert and -dkey options out of the undocumented feature
10281 area because they are useful for the DSA situation and should be
10282 recognized by the users.
10283 [Ralf S. Engelschall]
10285 *) Fix the cipher decision scheme for export ciphers: the export bits are
10286 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
10287 SSL_EXP_MASK. So, the original variable has to be used instead of the
10288 already masked variable.
10289 [Richard Levitte <levitte@stacken.kth.se>]
10291 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
10292 [Richard Levitte <levitte@stacken.kth.se>]
10294 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
10295 from `int' to `unsigned int' because it's a length and initialized by
10296 EVP_DigestFinal() which expects an `unsigned int *'.
10297 [Richard Levitte <levitte@stacken.kth.se>]
10299 *) Don't hard-code path to Perl interpreter on shebang line of Configure
10300 script. Instead use the usual Shell->Perl transition trick.
10301 [Ralf S. Engelschall]
10303 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
10304 (in addition to RSA certificates) to match the behaviour of `openssl dsa
10305 -noout -modulus' as it's already the case for `openssl rsa -noout
10306 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
10307 currently the public key is printed (a decision which was already done by
10308 `openssl dsa -modulus' in the past) which serves a similar purpose.
10309 Additionally the NO_RSA no longer completely removes the whole -modulus
10310 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
10312 [Ralf S. Engelschall]
10314 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
10315 BIO. See the source (crypto/evp/bio_ok.c) for more info.
10316 [Arne Ansper <arne@ats.cyber.ee>]
10318 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
10319 to be added. Now both 'req' and 'ca' can use new objects defined in the
10323 *) Add cool BIO that does syslog (or event log on NT).
10324 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
10326 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
10327 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
10328 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
10329 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
10332 *) Add preliminary config info for new extension code.
10335 *) Make RSA_NO_PADDING really use no padding.
10336 [Ulf Moeller <ulf@fitug.de>]
10338 *) Generate errors when private/public key check is done.
10341 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
10342 for some CRL extensions and new objects added.
10345 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
10346 key usage extension and fuller support for authority key id.
10349 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
10350 padding method for RSA, which is recommended for new applications in PKCS
10351 #1 v2.0 (RFC 2437, October 1998).
10352 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
10353 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
10354 against Bleichbacher's attack on RSA.
10355 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
10358 *) Updates to the new SSL compression code
10359 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10361 *) Fix so that the version number in the master secret, when passed
10362 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
10363 (because the server will not accept higher), that the version number
10364 is 0x03,0x01, not 0x03,0x00
10365 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10367 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
10368 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
10369 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
10372 *) Support for RAW extensions where an arbitrary extension can be
10373 created by including its DER encoding. See apps/openssl.cnf for
10377 *) Make sure latest Perl versions don't interpret some generated C array
10378 code as Perl array code in the crypto/err/err_genc.pl script.
10379 [Lars Weber <3weber@informatik.uni-hamburg.de>]
10381 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
10382 not many people have the assembler. Various Win32 compilation fixes and
10383 update to the INSTALL.W32 file with (hopefully) more accurate Win32
10384 build instructions.
10387 *) Modify configure script 'Configure' to automatically create crypto/date.h
10388 file under Win32 and also build pem.h from pem.org. New script
10389 util/mkfiles.pl to create the MINFO file on environments that can't do a
10390 'make files': perl util/mkfiles.pl >MINFO should work.
10393 *) Major rework of DES function declarations, in the pursuit of correctness
10394 and purity. As a result, many evil casts evaporated, and some weirdness,
10395 too. You may find this causes warnings in your code. Zapping your evil
10396 casts will probably fix them. Mostly.
10399 *) Fix for a typo in asn1.h. Bug fix to object creation script
10400 obj_dat.pl. It considered a zero in an object definition to mean
10401 "end of object": none of the objects in objects.h have any zeros
10402 so it wasn't spotted.
10403 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
10405 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
10406 Masking (CBCM). In the absence of test vectors, the best I have been able
10407 to do is check that the decrypt undoes the encrypt, so far. Send me test
10408 vectors if you have them.
10411 *) Correct calculation of key length for export ciphers (too much space was
10412 allocated for null ciphers). This has not been tested!
10415 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
10416 message is now correct (it understands "crypto" and "ssl" on its
10417 command line). There is also now an "update" option. This will update
10418 the util/ssleay.num and util/libeay.num files with any new functions.
10420 perl util/mkdef.pl crypto ssl update
10421 it will update them.
10424 *) Overhauled the Perl interface (perl/*):
10425 - ported BN stuff to OpenSSL's different BN library
10426 - made the perl/ source tree CVS-aware
10427 - renamed the package from SSLeay to OpenSSL (the files still contain
10428 their history because I've copied them in the repository)
10429 - removed obsolete files (the test scripts will be replaced
10430 by better Test::Harness variants in the future)
10431 [Ralf S. Engelschall]
10433 *) First cut for a very conservative source tree cleanup:
10434 1. merge various obsolete readme texts into doc/ssleay.txt
10435 where we collect the old documents and readme texts.
10436 2. remove the first part of files where I'm already sure that we no
10437 longer need them because of three reasons: either they are just temporary
10438 files which were left by Eric or they are preserved original files where
10439 I've verified that the diff is also available in the CVS via "cvs diff
10440 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
10441 the crypto/md/ stuff).
10442 [Ralf S. Engelschall]
10444 *) More extension code. Incomplete support for subject and issuer alt
10445 name, issuer and authority key id. Change the i2v function parameters
10446 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
10447 what that's for :-) Fix to ASN1 macro which messed up
10448 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
10451 *) Preliminary support for ENUMERATED type. This is largely copied from the
10455 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
10456 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10458 *) Make sure `make rehash' target really finds the `openssl' program.
10459 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10461 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
10462 like to hear about it if this slows down other processors.
10465 *) Add CygWin32 platform information to Configure script.
10466 [Alan Batie <batie@aahz.jf.intel.com>]
10468 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
10469 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
10471 *) New program nseq to manipulate netscape certificate sequences
10474 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
10478 *) Fixes to BN code. Previously the default was to define BN_RECURSION
10479 but the BN code had some problems that would cause failures when
10480 doing certificate verification and some other functions.
10481 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10483 *) Add ASN1 and PEM code to support netscape certificate sequences.
10486 *) Add ASN1 and PEM code to support netscape certificate sequences.
10489 *) Add several PKIX and private extended key usage OIDs.
10492 *) Modify the 'ca' program to handle the new extension code. Modify
10493 openssl.cnf for new extension format, add comments.
10496 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
10497 and add a sample to openssl.cnf so req -x509 now adds appropriate
10501 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
10502 error code, add initial support to X509_print() and x509 application.
10505 *) Takes a deep breath and start addding X509 V3 extension support code. Add
10506 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
10507 stuff is currently isolated and isn't even compiled yet.
10510 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
10511 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
10512 Removed the versions check from X509 routines when loading extensions:
10513 this allows certain broken certificates that don't set the version
10514 properly to be processed.
10517 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
10518 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
10519 can still be regenerated with "make depend".
10522 *) Spelling mistake in C version of CAST-128.
10523 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
10525 *) Changes to the error generation code. The perl script err-code.pl
10526 now reads in the old error codes and retains the old numbers, only
10527 adding new ones if necessary. It also only changes the .err files if new
10528 codes are added. The makefiles have been modified to only insert errors
10529 when needed (to avoid needlessly modifying header files). This is done
10530 by only inserting errors if the .err file is newer than the auto generated
10531 C file. To rebuild all the error codes from scratch (the old behaviour)
10532 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
10533 or delete all the .err files.
10536 *) CAST-128 was incorrectly implemented for short keys. The C version has
10537 been fixed, but is untested. The assembler versions are also fixed, but
10538 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
10539 to regenerate it if needed.
10540 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
10541 Hagino <itojun@kame.net>]
10543 *) File was opened incorrectly in randfile.c.
10544 [Ulf Möller <ulf@fitug.de>]
10546 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
10547 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
10548 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
10549 al: it's just almost always a UTCTime. Note this patch adds new error
10550 codes so do a "make errors" if there are problems.
10553 *) Correct Linux 1 recognition in config.
10554 [Ulf Möller <ulf@fitug.de>]
10556 *) Remove pointless MD5 hash when using DSA keys in ca.
10557 [Anonymous <nobody@replay.com>]
10559 *) Generate an error if given an empty string as a cert directory. Also
10560 generate an error if handed NULL (previously returned 0 to indicate an
10561 error, but didn't set one).
10562 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
10564 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
10567 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
10568 parameters. This was causing a warning which killed off the Win32 compile.
10571 *) Remove C++ style comments from crypto/bn/bn_local.h.
10572 [Neil Costigan <neil.costigan@celocom.com>]
10574 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
10575 based on a text string, looking up short and long names and finally
10576 "dot" format. The "dot" format stuff didn't work. Added new function
10577 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
10578 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
10579 OID is not part of the table.
10582 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
10583 X509_LOOKUP_by_alias().
10586 *) Sort openssl functions by name.
10589 *) Get the gendsa program working (hopefully) and add it to app list. Remove
10590 encryption from sample DSA keys (in case anyone is interested the password
10594 *) Make _all_ *_free functions accept a NULL pointer.
10595 [Frans Heymans <fheymans@isaserver.be>]
10597 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
10599 [Anonymous <nobody@replay.com>]
10601 *) s_server should send the CAfile as acceptable CAs, not its own cert.
10602 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
10604 *) Don't blow it for numeric -newkey arguments to apps/req.
10605 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
10607 *) Temp key "for export" tests were wrong in s3_srvr.c.
10608 [Anonymous <nobody@replay.com>]
10610 *) Add prototype for temp key callback functions
10611 SSL_CTX_set_tmp_{rsa,dh}_callback().
10614 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
10615 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
10618 *) X509_name_add_entry() freed the wrong thing after an error.
10619 [Arne Ansper <arne@ats.cyber.ee>]
10621 *) rsa_eay.c would attempt to free a NULL context.
10622 [Arne Ansper <arne@ats.cyber.ee>]
10624 *) BIO_s_socket() had a broken should_retry() on Windoze.
10625 [Arne Ansper <arne@ats.cyber.ee>]
10627 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
10628 [Arne Ansper <arne@ats.cyber.ee>]
10630 *) Make sure the already existing X509_STORE->depth variable is initialized
10631 in X509_STORE_new(), but document the fact that this variable is still
10632 unused in the certificate verification process.
10633 [Ralf S. Engelschall]
10635 *) Fix the various library and apps files to free up pkeys obtained from
10636 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
10639 *) Fix reference counting in X509_PUBKEY_get(). This makes
10640 demos/maurice/example2.c work, amongst others, probably.
10641 [Steve Henson and Ben Laurie]
10643 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
10644 `openssl' and second, the shortcut symlinks for the `openssl <command>'
10645 are no longer created. This way we have a single and consistent command
10646 line interface `openssl <command>', similar to `cvs <command>'.
10647 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
10649 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
10650 BIT STRING wrapper always have zero unused bits.
10653 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
10656 *) Make the top-level INSTALL documentation easier to understand.
10659 *) Makefiles updated to exit if an error occurs in a sub-directory
10660 make (including if user presses ^C) [Paul Sutton]
10662 *) Make Montgomery context stuff explicit in RSA data structure.
10665 *) Fix build order of pem and err to allow for generated pem.h.
10668 *) Fix renumbering bug in X509_NAME_delete_entry().
10671 *) Enhanced the err-ins.pl script so it makes the error library number
10672 global and can add a library name. This is needed for external ASN1 and
10673 other error libraries.
10676 *) Fixed sk_insert which never worked properly.
10679 *) Fix ASN1 macros so they can handle indefinite length construted
10680 EXPLICIT tags. Some non standard certificates use these: they can now
10684 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
10685 into a single doc/ssleay.txt bundle. This way the information is still
10686 preserved but no longer messes up this directory. Now it's new room for
10687 the new set of documenation files.
10688 [Ralf S. Engelschall]
10690 *) SETs were incorrectly DER encoded. This was a major pain, because they
10691 shared code with SEQUENCEs, which aren't coded the same. This means that
10692 almost everything to do with SETs or SEQUENCEs has either changed name or
10693 number of arguments.
10694 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
10696 *) Fix test data to work with the above.
10699 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
10700 was already fixed by Eric for 0.9.1 it seems.
10701 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
10703 *) Autodetect FreeBSD3.
10706 *) Fix various bugs in Configure. This affects the following platforms:
10710 unixware-2.0-pentium
10714 *) Eliminate generated files from CVS. Reorder tests to regenerate files
10715 before they are needed.
10718 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
10722 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
10724 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
10725 changed SSLeay to OpenSSL in version strings.
10726 [Ralf S. Engelschall]
10728 *) Some fixups to the top-level documents.
10731 *) Fixed the nasty bug where rsaref.h was not found under compile-time
10732 because the symlink to include/ was missing.
10733 [Ralf S. Engelschall]
10735 *) Incorporated the popular no-RSA/DSA-only patches
10736 which allow to compile a RSA-free SSLeay.
10737 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
10739 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
10740 when "ssleay" is still not found.
10741 [Ralf S. Engelschall]
10743 *) Added more platforms to Configure: Cray T3E, HPUX 11,
10744 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
10746 *) Updated the README file.
10747 [Ralf S. Engelschall]
10749 *) Added various .cvsignore files in the CVS repository subdirs
10750 to make a "cvs update" really silent.
10751 [Ralf S. Engelschall]
10753 *) Recompiled the error-definition header files and added
10754 missing symbols to the Win32 linker tables.
10755 [Ralf S. Engelschall]
10757 *) Cleaned up the top-level documents;
10758 o new files: CHANGES and LICENSE
10759 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
10760 o merged COPYRIGHT into LICENSE
10761 o removed obsolete TODO file
10762 o renamed MICROSOFT to INSTALL.W32
10763 [Ralf S. Engelschall]
10765 *) Removed dummy files from the 0.9.1b source tree:
10766 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
10767 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
10768 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
10769 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
10770 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
10771 [Ralf S. Engelschall]
10773 *) Added various platform portability fixes.
10776 *) The Genesis of the OpenSSL rpject:
10777 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
10778 Young and Tim J. Hudson created while they were working for C2Net until
10780 [The OpenSSL Project]
10783 Changes between 0.9.0b and 0.9.1b [not released]
10785 *) Updated a few CA certificates under certs/
10788 *) Changed some BIGNUM api stuff.
10791 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
10792 DGUX x86, Linux Alpha, etc.
10795 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
10796 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
10800 *) Add -strparse option to asn1pars program which parses nested
10802 [Dr Stephen Henson <shenson@bigfoot.com>]
10804 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
10807 *) DSA fix for "ca" program.
10810 *) Added "-genkey" option to "dsaparam" program.
10813 *) Added RIPE MD160 (rmd160) message digest.
10816 *) Added -a (all) option to "ssleay version" command.
10819 *) Added PLATFORM define which is the id given to Configure.
10822 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
10825 *) Extended the ASN.1 parser routines.
10828 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
10831 *) Added a BN_CTX to the BN library.
10834 *) Fixed the weak key values in DES library
10837 *) Changed API in EVP library for cipher aliases.
10840 *) Added support for RC2/64bit cipher.
10843 *) Converted the lhash library to the crypto/mem.c functions.
10846 *) Added more recognized ASN.1 object ids.
10849 *) Added more RSA padding checks for SSL/TLS.
10852 *) Added BIO proxy/filter functionality.
10855 *) Added extra_certs to SSL_CTX which can be used
10856 send extra CA certificates to the client in the CA cert chain sending
10857 process. It can be configured with SSL_CTX_add_extra_chain_cert().
10860 *) Now Fortezza is denied in the authentication phase because
10861 this is key exchange mechanism is not supported by SSLeay at all.
10864 *) Additional PKCS1 checks.
10867 *) Support the string "TLSv1" for all TLS v1 ciphers.
10870 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
10871 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
10874 *) Fixed a few memory leaks.
10877 *) Fixed various code and comment typos.
10880 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
10881 bytes sent in the client random.
10882 [Edward Bishop <ebishop@spyglass.com>]
projects / openssl.git / blob