5 Changes between 1.0.2c and 1.0.2d [xx XXX xxxx]
9 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
11 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
12 incompatibility in the handling of HMAC. The previous ABI has now been
15 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
17 *) Malformed ECParameters causes infinite loop
19 When processing an ECParameters structure OpenSSL enters an infinite loop
20 if the curve specified is over a specially malformed binary polynomial
23 This can be used to perform denial of service against any
24 system which processes public keys, certificate requests or
25 certificates. This includes TLS clients and TLS servers with
26 client authentication enabled.
28 This issue was reported to OpenSSL by Joseph Barr-Pixton.
32 *) Exploitable out-of-bounds read in X509_cmp_time
34 X509_cmp_time does not properly check the length of the ASN1_TIME
35 string and can read a few bytes out of bounds. In addition,
36 X509_cmp_time accepts an arbitrary number of fractional seconds in the
39 An attacker can use this to craft malformed certificates and CRLs of
40 various sizes and potentially cause a segmentation fault, resulting in
41 a DoS on applications that verify certificates or CRLs. TLS clients
42 that verify CRLs are affected. TLS clients and servers with client
43 authentication enabled may be affected if they use custom verification
46 This issue was reported to OpenSSL by Robert Swiecki (Google), and
47 independently by Hanno Böck.
51 *) PKCS7 crash with missing EnvelopedContent
53 The PKCS#7 parsing code does not handle missing inner EncryptedContent
54 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
55 with missing content and trigger a NULL pointer dereference on parsing.
57 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
58 structures from untrusted sources are affected. OpenSSL clients and
59 servers are not affected.
61 This issue was reported to OpenSSL by Michal Zalewski (Google).
65 *) CMS verify infinite loop with unknown hash function
67 When verifying a signedData message the CMS code can enter an infinite loop
68 if presented with an unknown hash function OID. This can be used to perform
69 denial of service against any system which verifies signedData messages using
71 This issue was reported to OpenSSL by Johannes Bauer.
75 *) Race condition handling NewSessionTicket
77 If a NewSessionTicket is received by a multi-threaded client when attempting to
78 reuse a previous ticket then a race condition can occur potentially leading to
79 a double free of the ticket data.
83 *) Removed support for the two export grade static DH ciphersuites
84 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
85 were newly added (along with a number of other static DH ciphersuites) to
86 1.0.2. However the two export ones have *never* worked since they were
87 introduced. It seems strange in any case to be adding new export
88 ciphersuites, and given "logjam" it also does not seem correct to fix them.
91 *) Only support 256-bit or stronger elliptic curves with the
92 'ecdh_auto' setting (server) or by default (client). Of supported
93 curves, prefer P-256 (both).
96 *) Reject DH handshakes with parameters shorter than 768 bits.
97 [Kurt Roeckx and Emilia Kasper]
99 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
101 *) ClientHello sigalgs DoS fix
103 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
104 invalid signature algorithms extension a NULL pointer dereference will
105 occur. This can be exploited in a DoS attack against the server.
107 This issue was was reported to OpenSSL by David Ramos of Stanford
110 [Stephen Henson and Matt Caswell]
112 *) Multiblock corrupted pointer fix
114 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
115 feature only applies on 64 bit x86 architecture platforms that support AES
116 NI instructions. A defect in the implementation of "multiblock" can cause
117 OpenSSL's internal write buffer to become incorrectly set to NULL when
118 using non-blocking IO. Typically, when the user application is using a
119 socket BIO for writing, this will only result in a failed connection.
120 However if some other BIO is used then it is likely that a segmentation
121 fault will be triggered, thus enabling a potential DoS attack.
123 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
127 *) Segmentation fault in DTLSv1_listen fix
129 The DTLSv1_listen function is intended to be stateless and processes the
130 initial ClientHello from many peers. It is common for user code to loop
131 over the call to DTLSv1_listen until a valid ClientHello is received with
132 an associated cookie. A defect in the implementation of DTLSv1_listen means
133 that state is preserved in the SSL object from one invocation to the next
134 that can lead to a segmentation fault. Errors processing the initial
135 ClientHello can trigger this scenario. An example of such an error could be
136 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
139 This issue was reported to OpenSSL by Per Allansson.
143 *) Segmentation fault in ASN1_TYPE_cmp fix
145 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
146 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
147 certificate signature algorithm consistency this can be used to crash any
148 certificate verification operation and exploited in a DoS attack. Any
149 application which performs certificate verification is vulnerable including
150 OpenSSL clients and servers which enable client authentication.
154 *) Segmentation fault for invalid PSS parameters fix
156 The signature verification routines will crash with a NULL pointer
157 dereference if presented with an ASN.1 signature using the RSA PSS
158 algorithm and invalid parameters. Since these routines are used to verify
159 certificate signature algorithms this can be used to crash any
160 certificate verification operation and exploited in a DoS attack. Any
161 application which performs certificate verification is vulnerable including
162 OpenSSL clients and servers which enable client authentication.
164 This issue was was reported to OpenSSL by Brian Carpenter.
168 *) ASN.1 structure reuse memory corruption fix
170 Reusing a structure in ASN.1 parsing may allow an attacker to cause
171 memory corruption via an invalid write. Such reuse is and has been
172 strongly discouraged and is believed to be rare.
174 Applications that parse structures containing CHOICE or ANY DEFINED BY
175 components may be affected. Certificate parsing (d2i_X509 and related
176 functions) are however not affected. OpenSSL clients and servers are
181 *) PKCS7 NULL pointer dereferences fix
183 The PKCS#7 parsing code does not handle missing outer ContentInfo
184 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
185 missing content and trigger a NULL pointer dereference on parsing.
187 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
188 otherwise parse PKCS#7 structures from untrusted sources are
189 affected. OpenSSL clients and servers are not affected.
191 This issue was reported to OpenSSL by Michal Zalewski (Google).
195 *) DoS via reachable assert in SSLv2 servers fix
197 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
198 servers that both support SSLv2 and enable export cipher suites by sending
199 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
201 This issue was discovered by Sean Burford (Google) and Emilia Käsper
202 (OpenSSL development team).
206 *) Empty CKE with client auth and DHE fix
208 If client auth is used then a server can seg fault in the event of a DHE
209 ciphersuite being selected and a zero length ClientKeyExchange message
210 being sent by the client. This could be exploited in a DoS attack.
214 *) Handshake with unseeded PRNG fix
216 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
217 with an unseeded PRNG. The conditions are:
218 - The client is on a platform where the PRNG has not been seeded
219 automatically, and the user has not seeded manually
220 - A protocol specific client method version has been used (i.e. not
221 SSL_client_methodv23)
222 - A ciphersuite is used that does not require additional random data from
223 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
225 If the handshake succeeds then the client random that has been used will
226 have been generated from a PRNG with insufficient entropy and therefore the
227 output may be predictable.
229 For example using the following command with an unseeded openssl will
230 succeed on an unpatched platform:
232 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
236 *) Use After Free following d2i_ECPrivatekey error fix
238 A malformed EC private key file consumed via the d2i_ECPrivateKey function
239 could cause a use after free condition. This, in turn, could cause a double
240 free in several private key parsing functions (such as d2i_PrivateKey
241 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
242 for applications that receive EC private keys from untrusted
243 sources. This scenario is considered rare.
245 This issue was discovered by the BoringSSL project and fixed in their
250 *) X509_to_X509_REQ NULL pointer deref fix
252 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
253 the certificate key is invalid. This function is rarely used in practice.
255 This issue was discovered by Brian Carpenter.
259 *) Removed the export ciphers from the DEFAULT ciphers
262 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
264 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
265 ARMv5 through ARMv8, as opposite to "locking" it to single one.
266 So far those who have to target multiple plaforms would compromise
267 and argue that binary targeting say ARMv5 would still execute on
268 ARMv8. "Universal" build resolves this compromise by providing
269 near-optimal performance even on newer platforms.
272 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
273 (other platforms pending).
274 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
276 *) Add support for the SignedCertificateTimestampList certificate and
277 OCSP response extensions from RFC6962.
280 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
281 for corner cases. (Certain input points at infinity could lead to
282 bogus results, with non-infinity inputs mapped to infinity too.)
285 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
286 This covers AES, SHA256/512 and GHASH. "Initial" means that most
287 common cases are optimized and there still is room for further
288 improvements. Vector Permutation AES for Altivec is also added.
291 *) Add support for little-endian ppc64 Linux target.
292 [Marcelo Cerri (IBM)]
294 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
295 SHA1, SHA256 and GHASH. "Initial" means that most common cases
296 are optimized and there still is room for further improvements.
297 Both 32- and 64-bit modes are supported.
298 [Andy Polyakov, Ard Biesheuvel (Linaro)]
300 *) Improved ARMv7 NEON support.
303 *) Support for SPARC Architecture 2011 crypto extensions, first
304 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
305 SHA256/512, MD5, GHASH and modular exponentiation.
306 [Andy Polyakov, David Miller]
308 *) Accelerated modular exponentiation for Intel processors, a.k.a.
310 [Shay Gueron & Vlad Krasnov (Intel Corp)]
312 *) Support for new and upcoming Intel processors, including AVX2,
313 BMI and SHA ISA extensions. This includes additional "stitched"
314 implementations, AESNI-SHA256 and GCM, and multi-buffer support
317 This work was sponsored by Intel Corp.
320 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
321 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
322 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
325 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
326 this fixes a limiation in previous versions of OpenSSL.
329 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
330 MGF1 digest and OAEP label.
333 *) Add EVP support for key wrapping algorithms, to avoid problems with
334 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
335 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
336 algorithms and include tests cases.
339 *) Add functions to allocate and set the fields of an ECDSA_METHOD
341 [Douglas E. Engert, Steve Henson]
343 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
344 difference in days and seconds between two tm or ASN1_TIME structures.
347 *) Add -rev test option to s_server to just reverse order of characters
348 received by client and send back to server. Also prints an abbreviated
349 summary of the connection parameters.
352 *) New option -brief for s_client and s_server to print out a brief summary
353 of connection parameters.
356 *) Add callbacks for arbitrary TLS extensions.
357 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
359 *) New option -crl_download in several openssl utilities to download CRLs
360 from CRLDP extension in certificates.
363 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
366 *) New function X509_CRL_diff to generate a delta CRL from the difference
367 of two full CRLs. Add support to "crl" utility.
370 *) New functions to set lookup_crls function and to retrieve
371 X509_STORE from X509_STORE_CTX.
374 *) Print out deprecated issuer and subject unique ID fields in
378 *) Extend OCSP I/O functions so they can be used for simple general purpose
379 HTTP as well as OCSP. New wrapper function which can be used to download
380 CRLs using the OCSP API.
383 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
386 *) SSL_CONF* functions. These provide a common framework for application
387 configuration using configuration files or command lines.
390 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
391 message callback and prints the results. Needs compile time option
392 "enable-ssl-trace". New options to s_client and s_server to enable
396 *) New ctrl and macro to retrieve supported points extensions.
397 Print out extension in s_server and s_client.
400 *) New functions to retrieve certificate signature and signature
404 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
408 *) New Suite B modes for TLS code. These use and enforce the requirements
409 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
410 only use Suite B curves. The Suite B modes can be set by using the
411 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
414 *) New chain verification flags for Suite B levels of security. Check
415 algorithms are acceptable when flags are set in X509_verify_cert.
418 *) Make tls1_check_chain return a set of flags indicating checks passed
419 by a certificate chain. Add additional tests to handle client
420 certificates: checks for matching certificate type and issuer name
424 *) If an attempt is made to use a signature algorithm not in the peer
425 preference list abort the handshake. If client has no suitable
426 signature algorithms in response to a certificate request do not
430 *) If server EC tmp key is not in client preference list abort handshake.
433 *) Add support for certificate stores in CERT structure. This makes it
434 possible to have different stores per SSL structure or one store in
435 the parent SSL_CTX. Include distint stores for certificate chain
436 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
437 to build and store a certificate chain in CERT structure: returing
438 an error if the chain cannot be built: this will allow applications
439 to test if a chain is correctly configured.
441 Note: if the CERT based stores are not set then the parent SSL_CTX
442 store is used to retain compatibility with existing behaviour.
446 *) New function ssl_set_client_disabled to set a ciphersuite disabled
447 mask based on the current session, check mask when sending client
448 hello and checking the requested ciphersuite.
451 *) New ctrls to retrieve and set certificate types in a certificate
452 request message. Print out received values in s_client. If certificate
453 types is not set with custom values set sensible values based on
454 supported signature algorithms.
457 *) Support for distinct client and server supported signature algorithms.
460 *) Add certificate callback. If set this is called whenever a certificate
461 is required by client or server. An application can decide which
462 certificate chain to present based on arbitrary criteria: for example
463 supported signature algorithms. Add very simple example to s_server.
464 This fixes many of the problems and restrictions of the existing client
465 certificate callback: for example you can now clear an existing
466 certificate and specify the whole chain.
469 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
470 the certificate can be used for (if anything). Set valid_flags field
471 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
472 to have similar checks in it.
474 Add new "cert_flags" field to CERT structure and include a "strict mode".
475 This enforces some TLS certificate requirements (such as only permitting
476 certificate signature algorithms contained in the supported algorithms
477 extension) which some implementations ignore: this option should be used
478 with caution as it could cause interoperability issues.
481 *) Update and tidy signature algorithm extension processing. Work out
482 shared signature algorithms based on preferences and peer algorithms
483 and print them out in s_client and s_server. Abort handshake if no
484 shared signature algorithms.
487 *) Add new functions to allow customised supported signature algorithms
488 for SSL and SSL_CTX structures. Add options to s_client and s_server
492 *) New function SSL_certs_clear() to delete all references to certificates
493 from an SSL structure. Before this once a certificate had been added
494 it couldn't be removed.
497 *) Integrate hostname, email address and IP address checking with certificate
498 verification. New verify options supporting checking in opensl utility.
501 *) Fixes and wildcard matching support to hostname and email checking
502 functions. Add manual page.
503 [Florian Weimer (Red Hat Product Security Team)]
505 *) New functions to check a hostname email or IP address against a
506 certificate. Add options x509 utility to print results of checks against
510 *) Fix OCSP checking.
511 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
513 *) Initial experimental support for explicitly trusted non-root CAs.
514 OpenSSL still tries to build a complete chain to a root but if an
515 intermediate CA has a trust setting included that is used. The first
516 setting is used: whether to trust (e.g., -addtrust option to the x509
520 *) Add -trusted_first option which attempts to find certificates in the
521 trusted store even if an untrusted chain is also supplied.
524 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
525 platform support for Linux and Android.
528 *) Support for linux-x32, ILP32 environment in x86_64 framework.
531 *) Experimental multi-implementation support for FIPS capable OpenSSL.
532 When in FIPS mode the approved implementations are used as normal,
533 when not in FIPS mode the internal unapproved versions are used instead.
534 This means that the FIPS capable OpenSSL isn't forced to use the
535 (often lower perfomance) FIPS implementations outside FIPS mode.
538 *) Transparently support X9.42 DH parameters when calling
539 PEM_read_bio_DHparameters. This means existing applications can handle
540 the new parameter format automatically.
543 *) Initial experimental support for X9.42 DH parameter format: mainly
544 to support use of 'q' parameter for RFC5114 parameters.
547 *) Add DH parameters from RFC5114 including test data to dhtest.
550 *) Support for automatic EC temporary key parameter selection. If enabled
551 the most preferred EC parameters are automatically used instead of
552 hardcoded fixed parameters. Now a server just has to call:
553 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
554 support ECDH and use the most appropriate parameters.
557 *) Enhance and tidy EC curve and point format TLS extension code. Use
558 static structures instead of allocation if default values are used.
559 New ctrls to set curves we wish to support and to retrieve shared curves.
560 Print out shared curves in s_server. New options to s_server and s_client
561 to set list of supported curves.
564 *) New ctrls to retrieve supported signature algorithms and
565 supported curve values as an array of NIDs. Extend openssl utility
566 to print out received values.
569 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
570 between NIDs and the more common NIST names such as "P-256". Enhance
571 ecparam utility and ECC method to recognise the NIST names for curves.
574 *) Enhance SSL/TLS certificate chain handling to support different
575 chains for each certificate instead of one chain in the parent SSL_CTX.
578 *) Support for fixed DH ciphersuite client authentication: where both
579 server and client use DH certificates with common parameters.
582 *) Support for fixed DH ciphersuites: those requiring DH server
586 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
588 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
589 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
590 X509_CINF_get_signature were reverted post internal team review.
592 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
594 *) Build fixes for the Windows and OpenVMS platforms
595 [Matt Caswell and Richard Levitte]
597 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
599 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
600 message can cause a segmentation fault in OpenSSL due to a NULL pointer
601 dereference. This could lead to a Denial Of Service attack. Thanks to
602 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
606 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
607 dtls1_buffer_record function under certain conditions. In particular this
608 could occur if an attacker sent repeated DTLS records with the same
609 sequence number but for the next epoch. The memory leak could be exploited
610 by an attacker in a Denial of Service attack through memory exhaustion.
611 Thanks to Chris Mueller for reporting this issue.
615 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
616 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
617 method would be set to NULL which could later result in a NULL pointer
618 dereference. Thanks to Frank Schmirler for reporting this issue.
622 *) Abort handshake if server key exchange message is omitted for ephemeral
625 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
626 reporting this issue.
630 *) Remove non-export ephemeral RSA code on client and server. This code
631 violated the TLS standard by allowing the use of temporary RSA keys in
632 non-export ciphersuites and could be used by a server to effectively
633 downgrade the RSA key length used to a value smaller than the server
634 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
635 INRIA or reporting this issue.
639 *) Fixed issue where DH client certificates are accepted without verification.
640 An OpenSSL server will accept a DH certificate for client authentication
641 without the certificate verify message. This effectively allows a client to
642 authenticate without the use of a private key. This only affects servers
643 which trust a client certificate authority which issues certificates
644 containing DH keys: these are extremely rare and hardly ever encountered.
645 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
650 *) Ensure that the session ID context of an SSL is updated when its
651 SSL_CTX is updated via SSL_set_SSL_CTX.
653 The session ID context is typically set from the parent SSL_CTX,
654 and can vary with the CTX.
657 *) Fix various certificate fingerprint issues.
659 By using non-DER or invalid encodings outside the signed portion of a
660 certificate the fingerprint can be changed without breaking the signature.
661 Although no details of the signed portion of the certificate can be changed
662 this can cause problems with some applications: e.g. those using the
663 certificate fingerprint for blacklists.
665 1. Reject signatures with non zero unused bits.
667 If the BIT STRING containing the signature has non zero unused bits reject
668 the signature. All current signature algorithms require zero unused bits.
670 2. Check certificate algorithm consistency.
672 Check the AlgorithmIdentifier inside TBS matches the one in the
673 certificate signature. NB: this will result in signature failure
674 errors for some broken certificates.
676 Thanks to Konrad Kraszewski from Google for reporting this issue.
678 3. Check DSA/ECDSA signatures use DER.
680 Reencode DSA/ECDSA signatures and compare with the original received
681 signature. Return an error if there is a mismatch.
683 This will reject various cases including garbage after signature
684 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
685 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
686 (negative or with leading zeroes).
688 Further analysis was conducted and fixes were developed by Stephen Henson
689 of the OpenSSL core team.
694 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
695 results on some platforms, including x86_64. This bug occurs at random
696 with a very low probability, and is not known to be exploitable in any
697 way, though its exact impact is difficult to determine. Thanks to Pieter
698 Wuille (Blockstream) who reported this issue and also suggested an initial
699 fix. Further analysis was conducted by the OpenSSL development team and
700 Adam Langley of Google. The final fix was developed by Andy Polyakov of
701 the OpenSSL core team.
705 *) Do not resume sessions on the server if the negotiated protocol
706 version does not match the session's version. Resuming with a different
707 version, while not strictly forbidden by the RFC, is of questionable
708 sanity and breaks all known clients.
709 [David Benjamin, Emilia Käsper]
711 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
712 early CCS messages during renegotiation. (Note that because
713 renegotiation is encrypted, this early CCS was not exploitable.)
716 *) Tighten client-side session ticket handling during renegotiation:
717 ensure that the client only accepts a session ticket if the server sends
718 the extension anew in the ServerHello. Previously, a TLS client would
719 reuse the old extension state and thus accept a session ticket if one was
720 announced in the initial ServerHello.
722 Similarly, ensure that the client requires a session ticket if one
723 was advertised in the ServerHello. Previously, a TLS client would
724 ignore a missing NewSessionTicket message.
727 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
731 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
732 sends a carefully crafted handshake message, to cause OpenSSL to fail
733 to free up to 64k of memory causing a memory leak. This could be
734 exploited in a Denial Of Service attack. This issue affects OpenSSL
735 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
736 whether SRTP is used or configured. Implementations of OpenSSL that
737 have been compiled with OPENSSL_NO_SRTP defined are not affected.
739 The fix was developed by the OpenSSL team.
743 *) Session Ticket Memory Leak.
745 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
746 integrity of that ticket is first verified. In the event of a session
747 ticket integrity check failing, OpenSSL will fail to free memory
748 causing a memory leak. By sending a large number of invalid session
749 tickets an attacker could exploit this issue in a Denial Of Service
754 *) Build option no-ssl3 is incomplete.
756 When OpenSSL is configured with "no-ssl3" as a build option, servers
757 could accept and complete a SSL 3.0 handshake, and clients could be
758 configured to send them.
760 [Akamai and the OpenSSL team]
762 *) Add support for TLS_FALLBACK_SCSV.
763 Client applications doing fallback retries should call
764 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
766 [Adam Langley, Bodo Moeller]
768 *) Add additional DigestInfo checks.
770 Reencode DigestInto in DER and check against the original when
771 verifying RSA signature: this will reject any improperly encoded
772 DigestInfo structures.
774 Note: this is a precautionary measure and no attacks are currently known.
778 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
780 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
781 SRP code can be overrun an internal buffer. Add sanity check that
782 g, A, B < N to SRP code.
784 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
785 Group for discovering this issue.
789 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
790 TLS 1.0 instead of higher protocol versions when the ClientHello message
791 is badly fragmented. This allows a man-in-the-middle attacker to force a
792 downgrade to TLS 1.0 even if both the server and the client support a
793 higher protocol version, by modifying the client's TLS records.
795 Thanks to David Benjamin and Adam Langley (Google) for discovering and
796 researching this issue.
800 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
801 to a denial of service attack. A malicious server can crash the client
802 with a null pointer dereference (read) by specifying an anonymous (EC)DH
803 ciphersuite and sending carefully crafted handshake messages.
805 Thanks to Felix Gröbert (Google) for discovering and researching this
810 *) By sending carefully crafted DTLS packets an attacker could cause openssl
811 to leak memory. This can be exploited through a Denial of Service attack.
812 Thanks to Adam Langley for discovering and researching this issue.
816 *) An attacker can force openssl to consume large amounts of memory whilst
817 processing DTLS handshake messages. This can be exploited through a
818 Denial of Service attack.
819 Thanks to Adam Langley for discovering and researching this issue.
823 *) An attacker can force an error condition which causes openssl to crash
824 whilst processing DTLS packets due to memory being freed twice. This
825 can be exploited through a Denial of Service attack.
826 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
831 *) If a multithreaded client connects to a malicious server using a resumed
832 session and the server sends an ec point format extension it could write
833 up to 255 bytes to freed memory.
835 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
840 *) A malicious server can crash an OpenSSL client with a null pointer
841 dereference (read) by specifying an SRP ciphersuite even though it was not
842 properly negotiated with the client. This can be exploited through a
843 Denial of Service attack.
845 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
846 discovering and researching this issue.
850 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
851 X509_name_oneline, X509_name_print_ex et al. to leak some information
852 from the stack. Applications may be affected if they echo pretty printing
853 output to the attacker.
855 Thanks to Ivan Fratric (Google) for discovering this issue.
857 [Emilia Käsper, and Steve Henson]
859 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
860 for corner cases. (Certain input points at infinity could lead to
861 bogus results, with non-infinity inputs mapped to infinity too.)
864 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
866 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
867 handshake can force the use of weak keying material in OpenSSL
868 SSL/TLS clients and servers.
870 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
871 researching this issue. (CVE-2014-0224)
872 [KIKUCHI Masashi, Steve Henson]
874 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
875 OpenSSL DTLS client the code can be made to recurse eventually crashing
878 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
880 [Imre Rad, Steve Henson]
882 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
883 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
884 client or server. This is potentially exploitable to run arbitrary
885 code on a vulnerable client or server.
887 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
888 [Jüri Aedla, Steve Henson]
890 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
891 are subject to a denial of service attack.
893 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
894 this issue. (CVE-2014-3470)
895 [Felix Gröbert, Ivan Fratric, Steve Henson]
897 *) Harmonize version and its documentation. -f flag is used to display
899 [mancha <mancha1@zoho.com>]
901 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
903 [mancha <mancha1@zoho.com>]
905 *) Fix some double frees. These are not thought to be exploitable.
906 [mancha <mancha1@zoho.com>]
908 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
910 *) A missing bounds check in the handling of the TLS heartbeat extension
911 can be used to reveal up to 64k of memory to a connected client or
914 Thanks for Neel Mehta of Google Security for discovering this bug and to
915 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
916 preparing the fix (CVE-2014-0160)
917 [Adam Langley, Bodo Moeller]
919 *) Fix for the attack described in the paper "Recovering OpenSSL
920 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
921 by Yuval Yarom and Naomi Benger. Details can be obtained from:
922 http://eprint.iacr.org/2014/140
924 Thanks to Yuval Yarom and Naomi Benger for discovering this
925 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
926 [Yuval Yarom and Naomi Benger]
928 *) TLS pad extension: draft-agl-tls-padding-03
930 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
931 TLS client Hello record length value would otherwise be > 255 and
932 less that 512 pad with a dummy extension containing zeroes so it
933 is at least 512 bytes long.
935 [Adam Langley, Steve Henson]
937 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
939 *) Fix for TLS record tampering bug. A carefully crafted invalid
940 handshake could crash OpenSSL with a NULL pointer exception.
941 Thanks to Anton Johansson for reporting this issues.
944 *) Keep original DTLS digest and encryption contexts in retransmission
945 structures so we can use the previous session parameters if they need
946 to be resent. (CVE-2013-6450)
949 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
950 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
951 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
952 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
953 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
954 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
955 [Rob Stradling, Adam Langley]
957 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
959 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
960 supporting platforms or when small records were transferred.
961 [Andy Polyakov, Steve Henson]
963 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
965 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
967 This addresses the flaw in CBC record processing discovered by
968 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
969 at: http://www.isg.rhul.ac.uk/tls/
971 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
972 Security Group at Royal Holloway, University of London
973 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
974 Emilia Käsper for the initial patch.
976 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
978 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
979 ciphersuites which can be exploited in a denial of service attack.
980 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
981 and detecting this bug and to Wolfgang Ettlinger
982 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
986 *) Return an error when checking OCSP signatures when key is NULL.
987 This fixes a DoS attack. (CVE-2013-0166)
990 *) Make openssl verify return errors.
991 [Chris Palmer <palmer@google.com> and Ben Laurie]
993 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
994 the right response is stapled. Also change SSL_get_certificate()
995 so it returns the certificate actually sent.
996 See http://rt.openssl.org/Ticket/Display.html?id=2836.
997 [Rob Stradling <rob.stradling@comodo.com>]
999 *) Fix possible deadlock when decoding public keys.
1002 *) Don't use TLS 1.0 record version number in initial client hello
1006 Changes between 1.0.1b and 1.0.1c [10 May 2012]
1008 *) Sanity check record length before skipping explicit IV in TLS
1009 1.2, 1.1 and DTLS to fix DoS attack.
1011 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
1012 fuzzing as a service testing platform.
1016 *) Initialise tkeylen properly when encrypting CMS messages.
1017 Thanks to Solar Designer of Openwall for reporting this issue.
1020 *) In FIPS mode don't try to use composite ciphers as they are not
1024 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
1026 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
1027 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
1028 mean any application compiled against OpenSSL 1.0.0 headers setting
1029 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
1030 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
1031 0x10000000L Any application which was previously compiled against
1032 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
1033 will need to be recompiled as a result. Letting be results in
1034 inability to disable specifically TLS 1.1 and in client context,
1035 in unlike event, limit maximum offered version to TLS 1.0 [see below].
1038 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
1039 disable just protocol X, but all protocols above X *if* there are
1040 protocols *below* X still enabled. In more practical terms it means
1041 that if application wants to disable TLS1.0 in favor of TLS1.1 and
1042 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
1043 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
1047 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
1049 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
1050 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
1051 in CRYPTO_realloc_clean.
1053 Thanks to Tavis Ormandy, Google Security Team, for discovering this
1054 issue and to Adam Langley <agl@chromium.org> for fixing it.
1056 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
1058 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
1061 *) Workarounds for some broken servers that "hang" if a client hello
1062 record length exceeds 255 bytes.
1064 1. Do not use record version number > TLS 1.0 in initial client
1065 hello: some (but not all) hanging servers will now work.
1066 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
1067 the number of ciphers sent in the client hello. This should be
1068 set to an even number, such as 50, for example by passing:
1069 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
1070 Most broken servers should now work.
1071 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
1072 TLS 1.2 client support entirely.
1075 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
1078 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
1080 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
1081 STRING form instead of a DigestInfo.
1084 *) The format used for MDC2 RSA signatures is inconsistent between EVP
1085 and the RSA_sign/RSA_verify functions. This was made more apparent when
1086 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
1087 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
1088 the correct format in RSA_verify so both forms transparently work.
1091 *) Some servers which support TLS 1.0 can choke if we initially indicate
1092 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
1093 encrypted premaster secret. As a workaround use the maximum pemitted
1094 client version in client hello, this should keep such servers happy
1095 and still work with previous versions of OpenSSL.
1098 *) Add support for TLS/DTLS heartbeats.
1099 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1101 *) Add support for SCTP.
1102 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1104 *) Improved PRNG seeding for VOS.
1105 [Paul Green <Paul.Green@stratus.com>]
1107 *) Extensive assembler packs updates, most notably:
1109 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
1110 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
1111 - x86_64: bit-sliced AES implementation;
1112 - ARM: NEON support, contemporary platforms optimizations;
1113 - s390x: z196 support;
1114 - *: GHASH and GF(2^m) multiplication implementations;
1118 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
1119 (removal of unnecessary code)
1120 [Peter Sylvester <peter.sylvester@edelweb.fr>]
1122 *) Add TLS key material exporter from RFC 5705.
1125 *) Add DTLS-SRTP negotiation from RFC 5764.
1128 *) Add Next Protocol Negotiation,
1129 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
1130 disabled with a no-npn flag to config or Configure. Code donated
1132 [Adam Langley <agl@google.com> and Ben Laurie]
1134 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
1135 NIST-P256, NIST-P521, with constant-time single point multiplication on
1136 typical inputs. Compiler support for the nonstandard type __uint128_t is
1137 required to use this (present in gcc 4.4 and later, for 64-bit builds).
1138 Code made available under Apache License version 2.0.
1140 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
1141 line to include this in your build of OpenSSL, and run "make depend" (or
1142 "make update"). This enables the following EC_METHODs:
1144 EC_GFp_nistp224_method()
1145 EC_GFp_nistp256_method()
1146 EC_GFp_nistp521_method()
1148 EC_GROUP_new_by_curve_name() will automatically use these (while
1149 EC_GROUP_new_curve_GFp() currently prefers the more flexible
1151 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
1153 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
1154 all platforms. Move ssize_t definition from e_os.h to the public
1155 header file e_os2.h as it now appears in public header file cms.h
1158 *) New -sigopt option to the ca, req and x509 utilities. Additional
1159 signature parameters can be passed using this option and in
1163 *) Add RSA PSS signing function. This will generate and set the
1164 appropriate AlgorithmIdentifiers for PSS based on those in the
1165 corresponding EVP_MD_CTX structure. No application support yet.
1168 *) Support for companion algorithm specific ASN1 signing routines.
1169 New function ASN1_item_sign_ctx() signs a pre-initialised
1170 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
1171 the appropriate parameters.
1174 *) Add new algorithm specific ASN1 verification initialisation function
1175 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
1176 handling will be the same no matter what EVP_PKEY_METHOD is used.
1177 Add a PSS handler to support verification of PSS signatures: checked
1178 against a number of sample certificates.
1181 *) Add signature printing for PSS. Add PSS OIDs.
1182 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
1184 *) Add algorithm specific signature printing. An individual ASN1 method
1185 can now print out signatures instead of the standard hex dump.
1187 More complex signatures (e.g. PSS) can print out more meaningful
1188 information. Include DSA version that prints out the signature
1192 *) Password based recipient info support for CMS library: implementing
1196 *) Split password based encryption into PBES2 and PBKDF2 functions. This
1197 neatly separates the code into cipher and PBE sections and is required
1198 for some algorithms that split PBES2 into separate pieces (such as
1199 password based CMS).
1202 *) Session-handling fixes:
1203 - Fix handling of connections that are resuming with a session ID,
1204 but also support Session Tickets.
1205 - Fix a bug that suppressed issuing of a new ticket if the client
1206 presented a ticket with an expired session.
1207 - Try to set the ticket lifetime hint to something reasonable.
1208 - Make tickets shorter by excluding irrelevant information.
1209 - On the client side, don't ignore renewed tickets.
1210 [Adam Langley, Bodo Moeller (Google)]
1212 *) Fix PSK session representation.
1215 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
1217 This work was sponsored by Intel.
1220 *) Add GCM support to TLS library. Some custom code is needed to split
1221 the IV between the fixed (from PRF) and explicit (from TLS record)
1222 portions. This adds all GCM ciphersuites supported by RFC5288 and
1223 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
1224 add a special AESGCM string for GCM only.
1227 *) Expand range of ctrls for AES GCM. Permit setting invocation
1228 field on decrypt and retrieval of invocation field only on encrypt.
1231 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
1232 As required by RFC5289 these ciphersuites cannot be used if for
1233 versions of TLS earlier than 1.2.
1236 *) For FIPS capable OpenSSL interpret a NULL default public key method
1237 as unset and return the appopriate default but do *not* set the default.
1238 This means we can return the appopriate method in applications that
1239 swicth between FIPS and non-FIPS modes.
1242 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
1243 ENGINE is used then we cannot handle that in the FIPS module so we
1244 keep original code iff non-FIPS operations are allowed.
1247 *) Add -attime option to openssl utilities.
1248 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
1250 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
1253 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
1254 FIPS EC methods unconditionally for now.
1257 *) New build option no-ec2m to disable characteristic 2 code.
1260 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
1261 all cases can be covered as some introduce binary incompatibilities.
1264 *) Redirect RSA operations to FIPS module including keygen,
1265 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
1268 *) Add similar low level API blocking to ciphers.
1271 *) Low level digest APIs are not approved in FIPS mode: any attempt
1272 to use these will cause a fatal error. Applications that *really* want
1273 to use them can use the private_* version instead.
1276 *) Redirect cipher operations to FIPS module for FIPS builds.
1279 *) Redirect digest operations to FIPS module for FIPS builds.
1282 *) Update build system to add "fips" flag which will link in fipscanister.o
1283 for static and shared library builds embedding a signature if needed.
1286 *) Output TLS supported curves in preference order instead of numerical
1287 order. This is currently hardcoded for the highest order curves first.
1288 This should be configurable so applications can judge speed vs strength.
1291 *) Add TLS v1.2 server support for client authentication.
1294 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
1298 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
1299 FIPS modules versions.
1302 *) Add TLS v1.2 client side support for client authentication. Keep cache
1303 of handshake records longer as we don't know the hash algorithm to use
1304 until after the certificate request message is received.
1307 *) Initial TLS v1.2 client support. Add a default signature algorithms
1308 extension including all the algorithms we support. Parse new signature
1309 format in client key exchange. Relax some ECC signing restrictions for
1310 TLS v1.2 as indicated in RFC5246.
1313 *) Add server support for TLS v1.2 signature algorithms extension. Switch
1314 to new signature format when needed using client digest preference.
1315 All server ciphersuites should now work correctly in TLS v1.2. No client
1316 support yet and no support for client certificates.
1319 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
1320 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
1321 ciphersuites. At present only RSA key exchange ciphersuites work with
1322 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
1323 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
1324 and version checking.
1327 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
1328 with this defined it will not be affected by any changes to ssl internal
1329 structures. Add several utility functions to allow openssl application
1330 to work with OPENSSL_NO_SSL_INTERN defined.
1334 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
1336 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
1339 *) Permit abbreviated handshakes when renegotiating using the function
1340 SSL_renegotiate_abbreviated().
1341 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1343 *) Add call to ENGINE_register_all_complete() to
1344 ENGINE_load_builtin_engines(), so some implementations get used
1345 automatically instead of needing explicit application support.
1348 *) Add support for TLS key exporter as described in RFC5705.
1349 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
1351 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
1352 a few changes are required:
1354 Add SSL_OP_NO_TLSv1_1 flag.
1355 Add TLSv1_1 methods.
1356 Update version checking logic to handle version 1.1.
1357 Add explicit IV handling (ported from DTLS code).
1358 Add command line options to s_client/s_server.
1361 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
1363 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
1364 in CMS and PKCS7 code. When RSA decryption fails use a random key for
1365 content decryption and always return the same error. Note: this attack
1366 needs on average 2^20 messages so it only affects automated senders. The
1367 old behaviour can be reenabled in the CMS code by setting the
1368 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
1369 an MMA defence is not necessary.
1370 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
1371 this issue. (CVE-2012-0884)
1374 *) Fix CVE-2011-4619: make sure we really are receiving a
1375 client hello before rejecting multiple SGC restarts. Thanks to
1376 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
1379 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
1381 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1382 Thanks to Antonio Martin, Enterprise Secure Access Research and
1383 Development, Cisco Systems, Inc. for discovering this bug and
1384 preparing a fix. (CVE-2012-0050)
1387 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
1389 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1390 of the Vaudenay padding oracle attack on CBC mode encryption
1391 which enables an efficient plaintext recovery attack against
1392 the OpenSSL implementation of DTLS. Their attack exploits timing
1393 differences arising during decryption processing. A research
1394 paper describing this attack can be found at:
1395 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1396 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1397 Security Group at Royal Holloway, University of London
1398 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1399 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1400 for preparing the fix. (CVE-2011-4108)
1401 [Robin Seggelmann, Michael Tuexen]
1403 *) Clear bytes used for block padding of SSL 3.0 records.
1405 [Adam Langley (Google)]
1407 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1408 Kadianakis <desnacked@gmail.com> for discovering this issue and
1409 Adam Langley for preparing the fix. (CVE-2011-4619)
1410 [Adam Langley (Google)]
1412 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
1413 [Andrey Kulikov <amdeich@gmail.com>]
1415 *) Prevent malformed RFC3779 data triggering an assertion failure.
1416 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1417 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1418 [Rob Austein <sra@hactrn.net>]
1420 *) Improved PRNG seeding for VOS.
1421 [Paul Green <Paul.Green@stratus.com>]
1423 *) Fix ssl_ciph.c set-up race.
1424 [Adam Langley (Google)]
1426 *) Fix spurious failures in ecdsatest.c.
1427 [Emilia Käsper (Google)]
1429 *) Fix the BIO_f_buffer() implementation (which was mixing different
1430 interpretations of the '..._len' fields).
1431 [Adam Langley (Google)]
1433 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1434 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1435 threads won't reuse the same blinding coefficients.
1437 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1438 lock to call BN_BLINDING_invert_ex, and avoids one use of
1439 BN_BLINDING_update for each BN_BLINDING structure (previously,
1440 the last update always remained unused).
1441 [Emilia Käsper (Google)]
1443 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
1444 [Bob Buckholz (Google)]
1446 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
1448 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
1449 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
1450 [Kaspar Brand <ossl@velox.ch>]
1452 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1453 for multi-threaded use of ECDH. (CVE-2011-3210)
1454 [Adam Langley (Google)]
1456 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1459 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
1460 signature public key algorithm by using OID xref utilities instead.
1461 Before this you could only use some ECC ciphersuites with SHA1 only.
1464 *) Add protection against ECDSA timing attacks as mentioned in the paper
1465 by Billy Bob Brumley and Nicola Tuveri, see:
1467 http://eprint.iacr.org/2011/232.pdf
1469 [Billy Bob Brumley and Nicola Tuveri]
1471 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
1473 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1474 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1476 *) Fix bug in string printing code: if *any* escaping is enabled we must
1477 escape the escape character (backslash) or the resulting string is
1481 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
1483 *) Disable code workaround for ancient and obsolete Netscape browsers
1484 and servers: an attacker can use it in a ciphersuite downgrade attack.
1485 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1488 *) Fixed J-PAKE implementation error, originally discovered by
1489 Sebastien Martini, further info and confirmation from Stefan
1490 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1493 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
1495 *) Fix extension code to avoid race conditions which can result in a buffer
1496 overrun vulnerability: resumed sessions must not be modified as they can
1497 be shared by multiple threads. CVE-2010-3864
1500 *) Fix WIN32 build system to correctly link an ENGINE directory into
1504 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
1506 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
1508 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
1510 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
1512 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
1513 context. The operation can be customised via the ctrl mechanism in
1514 case ENGINEs want to include additional functionality.
1517 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
1520 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
1521 output hashes compatible with older versions of OpenSSL.
1522 [Willy Weisz <weisz@vcpc.univie.ac.at>]
1524 *) Fix compression algorithm handling: if resuming a session use the
1525 compression algorithm of the resumed session instead of determining
1526 it from client hello again. Don't allow server to change algorithm.
1529 *) Add load_crls() function to apps tidying load_certs() too. Add option
1530 to verify utility to allow additional CRLs to be included.
1533 *) Update OCSP request code to permit adding custom headers to the request:
1534 some responders need this.
1537 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
1539 [Julia Lawall <julia@diku.dk>]
1541 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
1542 needlessly dereferenced structures, used obsolete functions and
1543 didn't handle all updated verify codes correctly.
1546 *) Disable MD2 in the default configuration.
1549 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
1550 indicate the initial BIO being pushed or popped. This makes it possible
1551 to determine whether the BIO is the one explicitly called or as a result
1552 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
1553 it handles reference counts correctly and doesn't zero out the I/O bio
1554 when it is not being explicitly popped. WARNING: applications which
1555 included workarounds for the old buggy behaviour will need to be modified
1556 or they could free up already freed BIOs.
1559 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
1560 renaming to all platforms (within the 0.9.8 branch, this was
1561 done conditionally on Netware platforms to avoid a name clash).
1562 [Guenter <lists@gknw.net>]
1564 *) Add ECDHE and PSK support to DTLS.
1565 [Michael Tuexen <tuexen@fh-muenster.de>]
1567 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
1571 *) Add "missing" function EVP_MD_flags() (without this the only way to
1572 retrieve a digest flags is by accessing the structure directly. Update
1573 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
1574 or cipher is registered as in the "from" argument. Print out all
1575 registered digests in the dgst usage message instead of manually
1576 attempting to work them out.
1579 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
1580 this allows the use of compression and extensions. Change default cipher
1581 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
1582 by default unless an application cipher string requests it.
1585 *) Alter match criteria in PKCS12_parse(). It used to try to use local
1586 key ids to find matching certificates and keys but some PKCS#12 files
1587 don't follow the (somewhat unwritten) rules and this strategy fails.
1588 Now just gather all certificates together and the first private key
1589 then look for the first certificate that matches the key.
1592 *) Support use of registered digest and cipher names for dgst and cipher
1593 commands instead of having to add each one as a special case. So now
1600 openssl dgst -sha256 foo
1602 and this works for ENGINE based algorithms too.
1606 *) Update Gost ENGINE to support parameter files.
1607 [Victor B. Wagner <vitus@cryptocom.ru>]
1609 *) Support GeneralizedTime in ca utility.
1610 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
1612 *) Enhance the hash format used for certificate directory links. The new
1613 form uses the canonical encoding (meaning equivalent names will work
1614 even if they aren't identical) and uses SHA1 instead of MD5. This form
1615 is incompatible with the older format and as a result c_rehash should
1616 be used to rebuild symbolic links.
1619 *) Make PKCS#8 the default write format for private keys, replacing the
1620 traditional format. This form is standardised, more secure and doesn't
1621 include an implicit MD5 dependency.
1624 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
1625 committed to OpenSSL should pass this lot as a minimum.
1628 *) Add session ticket override functionality for use by EAP-FAST.
1629 [Jouni Malinen <j@w1.fi>]
1631 *) Modify HMAC functions to return a value. Since these can be implemented
1632 in an ENGINE errors can occur.
1635 *) Type-checked OBJ_bsearch_ex.
1638 *) Type-checked OBJ_bsearch. Also some constification necessitated
1639 by type-checking. Still to come: TXT_DB, bsearch(?),
1640 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
1644 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
1645 seconds to a tm structure directly, instead of going through OS
1646 specific date routines. This avoids any issues with OS routines such
1647 as the year 2038 bug. New *_adj() functions for ASN1 time structures
1648 and X509_time_adj_ex() to cover the extended range. The existing
1649 X509_time_adj() is still usable and will no longer have any date issues.
1652 *) Delta CRL support. New use deltas option which will attempt to locate
1653 and search any appropriate delta CRLs available.
1655 This work was sponsored by Google.
1658 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
1659 code and add additional score elements. Validate alternate CRL paths
1660 as part of the CRL checking and indicate a new error "CRL path validation
1661 error" in this case. Applications wanting additional details can use
1662 the verify callback and check the new "parent" field. If this is not
1663 NULL CRL path validation is taking place. Existing applications wont
1664 see this because it requires extended CRL support which is off by
1667 This work was sponsored by Google.
1670 *) Support for freshest CRL extension.
1672 This work was sponsored by Google.
1675 *) Initial indirect CRL support. Currently only supported in the CRLs
1676 passed directly and not via lookup. Process certificate issuer
1677 CRL entry extension and lookup CRL entries by bother issuer name
1678 and serial number. Check and process CRL issuer entry in IDP extension.
1680 This work was sponsored by Google.
1683 *) Add support for distinct certificate and CRL paths. The CRL issuer
1684 certificate is validated separately in this case. Only enabled if
1685 an extended CRL support flag is set: this flag will enable additional
1686 CRL functionality in future.
1688 This work was sponsored by Google.
1691 *) Add support for policy mappings extension.
1693 This work was sponsored by Google.
1696 *) Fixes to pathlength constraint, self issued certificate handling,
1697 policy processing to align with RFC3280 and PKITS tests.
1699 This work was sponsored by Google.
1702 *) Support for name constraints certificate extension. DN, email, DNS
1703 and URI types are currently supported.
1705 This work was sponsored by Google.
1708 *) To cater for systems that provide a pointer-based thread ID rather
1709 than numeric, deprecate the current numeric thread ID mechanism and
1710 replace it with a structure and associated callback type. This
1711 mechanism allows a numeric "hash" to be extracted from a thread ID in
1712 either case, and on platforms where pointers are larger than 'long',
1713 mixing is done to help ensure the numeric 'hash' is usable even if it
1714 can't be guaranteed unique. The default mechanism is to use "&errno"
1715 as a pointer-based thread ID to distinguish between threads.
1717 Applications that want to provide their own thread IDs should now use
1718 CRYPTO_THREADID_set_callback() to register a callback that will call
1719 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
1721 Note that ERR_remove_state() is now deprecated, because it is tied
1722 to the assumption that thread IDs are numeric. ERR_remove_state(0)
1723 to free the current thread's error state should be replaced by
1724 ERR_remove_thread_state(NULL).
1726 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
1727 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
1728 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
1729 application was previously providing a numeric thread callback that
1730 was inappropriate for distinguishing threads, then uniqueness might
1731 have been obtained with &errno that happened immediately in the
1732 intermediate development versions of OpenSSL; this is no longer the
1733 case, the numeric thread callback will now override the automatic use
1735 [Geoff Thorpe, with help from Bodo Moeller]
1737 *) Initial support for different CRL issuing certificates. This covers a
1738 simple case where the self issued certificates in the chain exist and
1739 the real CRL issuer is higher in the existing chain.
1741 This work was sponsored by Google.
1744 *) Removed effectively defunct crypto/store from the build.
1747 *) Revamp of STACK to provide stronger type-checking. Still to come:
1748 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
1749 ASN1_STRING, CONF_VALUE.
1752 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
1753 RAM on SSL connections. This option can save about 34k per idle SSL.
1756 *) Revamp of LHASH to provide stronger type-checking. Still to come:
1757 STACK, TXT_DB, bsearch, qsort.
1760 *) Initial support for Cryptographic Message Syntax (aka CMS) based
1761 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
1762 support for data, signedData, compressedData, digestedData and
1763 encryptedData, envelopedData types included. Scripts to check against
1764 RFC4134 examples draft and interop and consistency checks of many
1765 content types and variants.
1768 *) Add options to enc utility to support use of zlib compression BIO.
1771 *) Extend mk1mf to support importing of options and assembly language
1772 files from Configure script, currently only included in VC-WIN32.
1773 The assembly language rules can now optionally generate the source
1774 files from the associated perl scripts.
1777 *) Implement remaining functionality needed to support GOST ciphersuites.
1778 Interop testing has been performed using CryptoPro implementations.
1779 [Victor B. Wagner <vitus@cryptocom.ru>]
1781 *) s390x assembler pack.
1784 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
1788 *) Implement Opaque PRF Input TLS extension as specified in
1789 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
1790 official specification yet and no extension type assignment by
1791 IANA exists, this extension (for now) will have to be explicitly
1792 enabled when building OpenSSL by providing the extension number
1793 to use. For example, specify an option
1795 -DTLSEXT_TYPE_opaque_prf_input=0x9527
1797 to the "config" or "Configure" script to enable the extension,
1798 assuming extension number 0x9527 (which is a completely arbitrary
1799 and unofficial assignment based on the MD5 hash of the Internet
1800 Draft). Note that by doing so, you potentially lose
1801 interoperability with other TLS implementations since these might
1802 be using the same extension number for other purposes.
1804 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
1805 opaque PRF input value to use in the handshake. This will create
1806 an interal copy of the length-'len' string at 'src', and will
1807 return non-zero for success.
1809 To get more control and flexibility, provide a callback function
1812 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
1813 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
1817 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
1820 Callback function 'cb' will be called in handshakes, and is
1821 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
1822 Argument 'arg' is for application purposes (the value as given to
1823 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
1824 be provided to the callback function). The callback function
1825 has to return non-zero to report success: usually 1 to use opaque
1826 PRF input just if possible, or 2 to enforce use of the opaque PRF
1827 input. In the latter case, the library will abort the handshake
1828 if opaque PRF input is not successfully negotiated.
1830 Arguments 'peerinput' and 'len' given to the callback function
1831 will always be NULL and 0 in the case of a client. A server will
1832 see the client's opaque PRF input through these variables if
1833 available (NULL and 0 otherwise). Note that if the server
1834 provides an opaque PRF input, the length must be the same as the
1835 length of the client's opaque PRF input.
1837 Note that the callback function will only be called when creating
1838 a new session (session resumption can resume whatever was
1839 previously negotiated), and will not be called in SSL 2.0
1840 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
1841 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
1842 for applications that need to enforce opaque PRF input.
1846 *) Update ssl code to support digests other than SHA1+MD5 for handshake
1849 [Victor B. Wagner <vitus@cryptocom.ru>]
1851 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1852 RFC4507bis. The encrypted ticket format is an encrypted encoded
1853 SSL_SESSION structure, that way new session features are automatically
1856 If a client application caches session in an SSL_SESSION structure
1857 support is transparent because tickets are now stored in the encoded
1860 The SSL_CTX structure automatically generates keys for ticket
1861 protection in servers so again support should be possible
1862 with no application modification.
1864 If a client or server wishes to disable RFC4507 support then the option
1865 SSL_OP_NO_TICKET can be set.
1867 Add a TLS extension debugging callback to allow the contents of any client
1868 or server extensions to be examined.
1870 This work was sponsored by Google.
1873 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
1874 OpenSSL should now compile cleanly on gcc 4.2
1875 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
1877 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
1878 support including streaming MAC support: this is required for GOST
1879 ciphersuite support.
1880 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
1882 *) Add option -stream to use PKCS#7 streaming in smime utility. New
1883 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1884 to output in BER and PEM format.
1887 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1888 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1889 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1890 ENGINE support for HMAC keys which are unextractable. New -mac and
1891 -macopt options to dgst utility.
1894 *) New option -sigopt to dgst utility. Update dgst to use
1895 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1896 alternative signing paramaters such as X9.31 or PSS in the dgst
1900 *) Change ssl_cipher_apply_rule(), the internal function that does
1901 the work each time a ciphersuite string requests enabling
1902 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1903 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1904 the order of disabled ciphersuites such that those ciphersuites
1905 that most recently went from enabled to disabled not only stay
1906 in order with respect to each other, but also have higher priority
1907 than other disabled ciphersuites the next time ciphersuites are
1910 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1911 the same ciphersuites as with "HIGH" alone, but in a specific
1912 order where the PSK ciphersuites come first (since they are the
1913 most recently disabled ciphersuites when "HIGH" is parsed).
1915 Also, change ssl_create_cipher_list() (using this new
1916 funcionality) such that between otherwise identical
1917 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1921 *) Change ssl_create_cipher_list() so that it automatically
1922 arranges the ciphersuites in reasonable order before starting
1923 to process the rule string. Thus, the definition for "DEFAULT"
1924 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1925 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1926 This makes it much easier to arrive at a reasonable default order
1927 in applications for which anonymous ciphers are OK (meaning
1928 that you can't actually use DEFAULT).
1929 [Bodo Moeller; suggested by Victor Duchovni]
1931 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1932 processing) into multiple integers instead of setting
1933 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1934 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1935 (These masks as well as the individual bit definitions are hidden
1936 away into the non-exported interface ssl/ssl_locl.h, so this
1937 change to the definition of the SSL_CIPHER structure shouldn't
1938 affect applications.) This give us more bits for each of these
1939 categories, so there is no longer a need to coagulate AES128 and
1940 AES256 into a single algorithm bit, and to coagulate Camellia128
1941 and Camellia256 into a single algorithm bit, which has led to all
1944 Thus, among other things, the kludge introduced in 0.9.7m and
1945 0.9.8e for masking out AES256 independently of AES128 or masking
1946 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1948 With the change, we also introduce new ciphersuite aliases that
1949 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1953 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1954 Use the leftmost N bytes of the signature input if the input is
1955 larger than the prime q (with N being the size in bytes of q).
1958 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1959 it yet and it is largely untested.
1962 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1965 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1966 some compilers (gcc 4.2 and later) reject their use. Safestack is
1967 reimplemented. Update ASN1 to avoid use of legacy functions.
1970 *) Win32/64 targets are linked with Winsock2.
1973 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1974 to external functions. This can be used to increase CRL handling
1975 efficiency especially when CRLs are very large by (for example) storing
1976 the CRL revoked certificates in a database.
1979 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1980 new CRLs added to a directory can be used. New command line option
1981 -verify_return_error to s_client and s_server. This causes real errors
1982 to be returned by the verify callback instead of carrying on no matter
1983 what. This reflects the way a "real world" verify callback would behave.
1986 *) GOST engine, supporting several GOST algorithms and public key formats.
1987 Kindly donated by Cryptocom.
1990 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1991 partitioned by DP are handled but no indirect CRL or reason partitioning
1992 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1993 selected via a scoring technique which handles IDP and AKID in CRLs.
1996 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1997 will ultimately be used for all verify operations: this will remove the
1998 X509_STORE dependency on certificate verification and allow alternative
1999 lookup methods. X509_STORE based implementations of these two callbacks.
2002 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
2003 Modify get_crl() to find a valid (unexpired) CRL if possible.
2006 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
2007 this would be called X509_CRL_cmp() but that name is already used by
2008 a function that just compares CRL issuer names. Cache several CRL
2009 extensions in X509_CRL structure and cache CRLDP in X509.
2012 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
2013 this maps equivalent X509_NAME structures into a consistent structure.
2014 Name comparison can then be performed rapidly using memcmp().
2017 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
2021 *) Allow digests to supply their own micalg string for S/MIME type using
2022 the ctrl EVP_MD_CTRL_MICALG.
2025 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
2026 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
2027 ctrl. It can then customise the structure before and/or after signing
2031 *) New function OBJ_add_sigid() to allow application defined signature OIDs
2032 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
2033 to free up any added signature OIDs.
2036 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
2037 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
2038 digest and cipher tables. New options added to openssl utility:
2039 list-message-digest-algorithms and list-cipher-algorithms.
2042 *) Change the array representation of binary polynomials: the list
2043 of degrees of non-zero coefficients is now terminated with -1.
2044 Previously it was terminated with 0, which was also part of the
2045 value; thus, the array representation was not applicable to
2046 polynomials where t^0 has coefficient zero. This change makes
2047 the array representation useful in a more general context.
2050 *) Various modifications and fixes to SSL/TLS cipher string
2051 handling. For ECC, the code now distinguishes between fixed ECDH
2052 with RSA certificates on the one hand and with ECDSA certificates
2053 on the other hand, since these are separate ciphersuites. The
2054 unused code for Fortezza ciphersuites has been removed.
2056 For consistency with EDH, ephemeral ECDH is now called "EECDH"
2057 (not "ECDHE"). For consistency with the code for DH
2058 certificates, use of ECDH certificates is now considered ECDH
2059 authentication, not RSA or ECDSA authentication (the latter is
2060 merely the CA's signing algorithm and not actively used in the
2063 The temporary ciphersuite alias "ECCdraft" is no longer
2064 available, and ECC ciphersuites are no longer excluded from "ALL"
2065 and "DEFAULT". The following aliases now exist for RFC 4492
2066 ciphersuites, most of these by analogy with the DH case:
2068 kECDHr - ECDH cert, signed with RSA
2069 kECDHe - ECDH cert, signed with ECDSA
2070 kECDH - ECDH cert (signed with either RSA or ECDSA)
2071 kEECDH - ephemeral ECDH
2072 ECDH - ECDH cert or ephemeral ECDH
2078 AECDH - anonymous ECDH
2079 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
2083 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
2084 Use correct micalg parameters depending on digest(s) in signed message.
2087 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
2088 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
2091 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
2092 an engine to register a method. Add ENGINE lookups for methods and
2093 functional reference processing.
2096 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
2097 EVP_{Sign,Verify}* which allow an application to customise the signature
2101 *) New -resign option to smime utility. This adds one or more signers
2102 to an existing PKCS#7 signedData structure. Also -md option to use an
2103 alternative message digest algorithm for signing.
2106 *) Tidy up PKCS#7 routines and add new functions to make it easier to
2107 create PKCS7 structures containing multiple signers. Update smime
2108 application to support multiple signers.
2111 *) New -macalg option to pkcs12 utility to allow setting of an alternative
2115 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
2116 Reorganize PBE internals to lookup from a static table using NIDs,
2117 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
2118 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
2119 PRF which will be automatically used with PBES2.
2122 *) Replace the algorithm specific calls to generate keys in "req" with the
2126 *) Update PKCS#7 enveloped data routines to use new API. This is now
2127 supported by any public key method supporting the encrypt operation. A
2128 ctrl is added to allow the public key algorithm to examine or modify
2129 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
2133 *) Add a ctrl to asn1 method to allow a public key algorithm to express
2134 a default digest type to use. In most cases this will be SHA1 but some
2135 algorithms (such as GOST) need to specify an alternative digest. The
2136 return value indicates how strong the prefernce is 1 means optional and
2137 2 is mandatory (that is it is the only supported type). Modify
2138 ASN1_item_sign() to accept a NULL digest argument to indicate it should
2139 use the default md. Update openssl utilities to use the default digest
2140 type for signing if it is not explicitly indicated.
2143 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
2144 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
2145 signing method from the key type. This effectively removes the link
2146 between digests and public key types.
2149 *) Add an OID cross reference table and utility functions. Its purpose is to
2150 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
2151 rsaEncryption. This will allow some of the algorithm specific hackery
2152 needed to use the correct OID to be removed.
2155 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
2156 structures for PKCS7_sign(). They are now set up by the relevant public
2160 *) Add provisional EC pkey method with support for ECDSA and ECDH.
2163 *) Add support for key derivation (agreement) in the API, DH method and
2167 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
2168 public and private key formats. As a side effect these add additional
2169 command line functionality not previously available: DSA signatures can be
2170 generated and verified using pkeyutl and DH key support and generation in
2175 [Oliver Tappe <zooey@hirschkaefer.de>]
2177 *) New make target "install_html_docs" installs HTML renditions of the
2179 [Oliver Tappe <zooey@hirschkaefer.de>]
2181 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
2182 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
2183 support key and parameter generation and add initial key generation
2184 functionality for RSA.
2187 *) Add functions for main EVP_PKEY_method operations. The undocumented
2188 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
2189 EVP_PKEY_{encrypt,decrypt}_old.
2192 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
2193 key API, doesn't do much yet.
2196 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
2197 public key algorithms. New option to openssl utility:
2198 "list-public-key-algorithms" to print out info.
2201 *) Implement the Supported Elliptic Curves Extension for
2202 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2205 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
2206 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
2209 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
2210 utilities such as rsa, dsa, dsaparam etc except they process any key
2214 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
2215 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
2216 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
2220 *) Initial support for pluggable public key ASN1.
2221 De-spaghettify the public key ASN1 handling. Move public and private
2222 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
2223 algorithm specific handling to a single module within the relevant
2224 algorithm directory. Add functions to allow (near) opaque processing
2225 of public and private key structures.
2228 *) Implement the Supported Point Formats Extension for
2229 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2232 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
2233 for the psk identity [hint] and the psk callback functions to the
2234 SSL_SESSION, SSL and SSL_CTX structure.
2237 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
2241 SSL_CTX_use_psk_identity_hint
2242 SSL_get_psk_identity_hint
2243 SSL_get_psk_identity
2244 SSL_use_psk_identity_hint
2246 [Mika Kousa and Pasi Eronen of Nokia Corporation]
2248 *) Add RFC 3161 compliant time stamp request creation, response generation
2249 and response verification functionality.
2250 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
2252 *) Add initial support for TLS extensions, specifically for the server_name
2253 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2254 have new members for a host name. The SSL data structure has an
2255 additional member SSL_CTX *initial_ctx so that new sessions can be
2256 stored in that context to allow for session resumption, even after the
2257 SSL has been switched to a new SSL_CTX in reaction to a client's
2258 server_name extension.
2260 New functions (subject to change):
2262 SSL_get_servername()
2263 SSL_get_servername_type()
2266 New CTRL codes and macros (subject to change):
2268 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2269 - SSL_CTX_set_tlsext_servername_callback()
2270 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2271 - SSL_CTX_set_tlsext_servername_arg()
2272 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2274 openssl s_client has a new '-servername ...' option.
2276 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2277 '-key2 ...', '-servername_fatal' (subject to change). This allows
2278 testing the HostName extension for a specific single host name ('-cert'
2279 and '-key' remain fallbacks for handshakes without HostName
2280 negotiation). If the unrecogninzed_name alert has to be sent, this by
2281 default is a warning; it becomes fatal with the '-servername_fatal'
2284 [Peter Sylvester, Remy Allais, Christophe Renou]
2286 *) Whirlpool hash implementation is added.
2289 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
2290 bn(64,32). Because of instruction set limitations it doesn't have
2291 any negative impact on performance. This was done mostly in order
2292 to make it possible to share assembler modules, such as bn_mul_mont
2293 implementations, between 32- and 64-bit builds without hassle.
2296 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
2297 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
2301 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
2302 dedicated Montgomery multiplication procedure, is introduced.
2303 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
2304 "64-bit" performance on certain 32-bit targets.
2307 *) New option SSL_OP_NO_COMP to disable use of compression selectively
2308 in SSL structures. New SSL ctrl to set maximum send fragment size.
2309 Save memory by seeting the I/O buffer sizes dynamically instead of
2310 using the maximum available value.
2313 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
2314 in addition to the text details.
2317 *) Very, very preliminary EXPERIMENTAL support for printing of general
2318 ASN1 structures. This currently produces rather ugly output and doesn't
2319 handle several customised structures at all.
2322 *) Integrated support for PVK file format and some related formats such
2323 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
2324 these in the 'rsa' and 'dsa' utilities.
2327 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
2330 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
2331 place for the (very old) "NETSCAPE" format certificates which are now
2332 handled using new ASN1 code equivalents.
2335 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
2336 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
2337 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
2340 *) Modify CRL distribution points extension code to print out previously
2341 unsupported fields. Enhance extension setting code to allow setting of
2345 *) Add print and set support for Issuing Distribution Point CRL extension.
2348 *) Change 'Configure' script to enable Camellia by default.
2351 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
2353 *) When rejecting SSL/TLS records due to an incorrect version number, never
2354 update s->server with a new major version number. As of
2355 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
2356 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
2357 the previous behavior could result in a read attempt at NULL when
2358 receiving specific incorrect SSL/TLS records once record payload
2359 protection is active. (CVE-2010-0740)
2360 [Bodo Moeller, Adam Langley <agl@chromium.org>]
2362 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
2363 could be crashed if the relevant tables were not present (e.g. chrooted).
2364 [Tomas Hoger <thoger@redhat.com>]
2366 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
2368 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
2369 [Martin Olsson, Neel Mehta]
2371 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
2372 accommodate for stack sorting, always a write lock!).
2375 *) On some versions of WIN32 Heap32Next is very slow. This can cause
2376 excessive delays in the RAND_poll(): over a minute. As a workaround
2377 include a time check in the inner Heap32Next loop too.
2380 *) The code that handled flushing of data in SSL/TLS originally used the
2381 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
2382 the problem outlined in PR#1949. The fix suggested there however can
2383 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
2384 of Apache). So instead simplify the code to flush unconditionally.
2385 This should be fine since flushing with no data to flush is a no op.
2388 *) Handle TLS versions 2.0 and later properly and correctly use the
2389 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
2390 off ancient servers have a habit of sticking around for a while...
2393 *) Modify compression code so it frees up structures without using the
2394 ex_data callbacks. This works around a problem where some applications
2395 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
2396 restarting) then use compression (e.g. SSL with compression) later.
2397 This results in significant per-connection memory leaks and
2398 has caused some security issues including CVE-2008-1678 and
2402 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
2403 change when encrypting or decrypting.
2406 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
2407 connect and renegotiate with servers which do not support RI.
2408 Until RI is more widely deployed this option is enabled by default.
2411 *) Add "missing" ssl ctrls to clear options and mode.
2414 *) If client attempts to renegotiate and doesn't support RI respond with
2415 a no_renegotiation alert as required by RFC5746. Some renegotiating
2416 TLS clients will continue a connection gracefully when they receive
2417 the alert. Unfortunately OpenSSL mishandled this alert and would hang
2418 waiting for a server hello which it will never receive. Now we treat a
2419 received no_renegotiation alert as a fatal error. This is because
2420 applications requesting a renegotiation might well expect it to succeed
2421 and would have no code in place to handle the server denying it so the
2422 only safe thing to do is to terminate the connection.
2425 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
2426 peer supports secure renegotiation and 0 otherwise. Print out peer
2427 renegotiation support in s_client/s_server.
2430 *) Replace the highly broken and deprecated SPKAC certification method with
2431 the updated NID creation version. This should correctly handle UTF8.
2434 *) Implement RFC5746. Re-enable renegotiation but require the extension
2435 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
2436 turns out to be a bad idea. It has been replaced by
2437 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
2438 SSL_CTX_set_options(). This is really not recommended unless you
2439 know what you are doing.
2440 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
2442 *) Fixes to stateless session resumption handling. Use initial_ctx when
2443 issuing and attempting to decrypt tickets in case it has changed during
2444 servername handling. Use a non-zero length session ID when attempting
2445 stateless session resumption: this makes it possible to determine if
2446 a resumption has occurred immediately after receiving server hello
2447 (several places in OpenSSL subtly assume this) instead of later in
2451 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
2452 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
2453 fixes for a few places where the return code is not checked
2455 [Julia Lawall <julia@diku.dk>]
2457 *) Add --strict-warnings option to Configure script to include devteam
2458 warnings in other configurations.
2461 *) Add support for --libdir option and LIBDIR variable in makefiles. This
2462 makes it possible to install openssl libraries in locations which
2463 have names other than "lib", for example "/usr/lib64" which some
2465 [Steve Henson, based on patch from Jeremy Utley]
2467 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
2468 X690 8.9.12 and can produce some misleading textual output of OIDs.
2469 [Steve Henson, reported by Dan Kaminsky]
2471 *) Delete MD2 from algorithm tables. This follows the recommendation in
2472 several standards that it is not used in new applications due to
2473 several cryptographic weaknesses. For binary compatibility reasons
2474 the MD2 API is still compiled in by default.
2477 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
2481 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
2482 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
2484 [Guenter <lists@gknw.net>]
2486 *) Fix the server certificate chain building code to use X509_verify_cert(),
2487 it used to have an ad-hoc builder which was unable to cope with anything
2488 other than a simple chain.
2489 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
2491 *) Don't check self signed certificate signatures in X509_verify_cert()
2492 by default (a flag can override this): it just wastes time without
2493 adding any security. As a useful side effect self signed root CAs
2494 with non-FIPS digests are now usable in FIPS mode.
2497 *) In dtls1_process_out_of_seq_message() the check if the current message
2498 is already buffered was missing. For every new message was memory
2499 allocated, allowing an attacker to perform an denial of service attack
2500 with sending out of seq handshake messages until there is no memory
2501 left. Additionally every future messege was buffered, even if the
2502 sequence number made no sense and would be part of another handshake.
2503 So only messages with sequence numbers less than 10 in advance will be
2504 buffered. (CVE-2009-1378)
2505 [Robin Seggelmann, discovered by Daniel Mentz]
2507 *) Records are buffered if they arrive with a future epoch to be
2508 processed after finishing the corresponding handshake. There is
2509 currently no limitation to this buffer allowing an attacker to perform
2510 a DOS attack with sending records with future epochs until there is no
2511 memory left. This patch adds the pqueue_size() function to detemine
2512 the size of a buffer and limits the record buffer to 100 entries.
2514 [Robin Seggelmann, discovered by Daniel Mentz]
2516 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
2517 parent structure is freed. (CVE-2009-1379)
2520 *) Handle non-blocking I/O properly in SSL_shutdown() call.
2521 [Darryl Miles <darryl-mailinglists@netbauds.net>]
2524 [Ilya O. <vrghost@gmail.com>]
2526 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
2528 *) Disable renegotiation completely - this fixes a severe security
2529 problem (CVE-2009-3555) at the cost of breaking all
2530 renegotiation. Renegotiation can be re-enabled by setting
2531 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
2532 run-time. This is really not recommended unless you know what
2536 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
2538 *) Don't set val to NULL when freeing up structures, it is freed up by
2539 underlying code. If sizeof(void *) > sizeof(long) this can result in
2540 zeroing past the valid field. (CVE-2009-0789)
2541 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
2543 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
2544 checked correctly. This would allow some invalid signed attributes to
2545 appear to verify correctly. (CVE-2009-0591)
2546 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2548 *) Reject UniversalString and BMPString types with invalid lengths. This
2549 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
2550 a legal length. (CVE-2009-0590)
2553 *) Set S/MIME signing as the default purpose rather than setting it
2554 unconditionally. This allows applications to override it at the store
2558 *) Permit restricted recursion of ASN1 strings. This is needed in practice
2559 to handle some structures.
2562 *) Improve efficiency of mem_gets: don't search whole buffer each time
2564 [Jeremy Shapiro <jnshapir@us.ibm.com>]
2566 *) New -hex option for openssl rand.
2569 *) Print out UTF8String and NumericString when parsing ASN1.
2572 *) Support NumericString type for name components.
2575 *) Allow CC in the environment to override the automatically chosen
2576 compiler. Note that nothing is done to ensure flags work with the
2580 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
2582 *) Properly check EVP_VerifyFinal() and similar return values
2584 [Ben Laurie, Bodo Moeller, Google Security Team]
2586 *) Enable TLS extensions by default.
2589 *) Allow the CHIL engine to be loaded, whether the application is
2590 multithreaded or not. (This does not release the developer from the
2591 obligation to set up the dynamic locking callbacks.)
2592 [Sander Temme <sander@temme.net>]
2594 *) Use correct exit code if there is an error in dgst command.
2595 [Steve Henson; problem pointed out by Roland Dirlewanger]
2597 *) Tweak Configure so that you need to say "experimental-jpake" to enable
2598 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
2601 *) Add experimental JPAKE support, including demo authentication in
2602 s_client and s_server.
2605 *) Set the comparison function in v3_addr_canonize().
2606 [Rob Austein <sra@hactrn.net>]
2608 *) Add support for XMPP STARTTLS in s_client.
2609 [Philip Paeps <philip@freebsd.org>]
2611 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
2612 to ensure that even with this option, only ciphersuites in the
2613 server's preference list will be accepted. (Note that the option
2614 applies only when resuming a session, so the earlier behavior was
2615 just about the algorithm choice for symmetric cryptography.)
2618 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
2620 *) Fix NULL pointer dereference if a DTLS server received
2621 ChangeCipherSpec as first record (CVE-2009-1386).
2624 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
2625 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
2628 *) The fix in 0.9.8c that supposedly got rid of unsafe
2629 double-checked locking was incomplete for RSA blinding,
2630 addressing just one layer of what turns out to have been
2631 doubly unsafe triple-checked locking.
2633 So now fix this for real by retiring the MONT_HELPER macro
2634 in crypto/rsa/rsa_eay.c.
2636 [Bodo Moeller; problem pointed out by Marius Schilder]
2638 *) Various precautionary measures:
2640 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
2642 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
2643 (NB: This would require knowledge of the secret session ticket key
2644 to exploit, in which case you'd be SOL either way.)
2646 - Change bn_nist.c so that it will properly handle input BIGNUMs
2647 outside the expected range.
2649 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
2652 [Neel Mehta, Bodo Moeller]
2654 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
2655 the load fails. Useful for distros.
2656 [Ben Laurie and the FreeBSD team]
2658 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
2661 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
2664 *) Expand ENGINE to support engine supplied SSL client certificate functions.
2666 This work was sponsored by Logica.
2669 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
2670 keystores. Support for SSL/TLS client authentication too.
2671 Not compiled unless enable-capieng specified to Configure.
2673 This work was sponsored by Logica.
2676 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
2677 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
2678 attribute creation routines such as certifcate requests and PKCS#12
2682 Changes between 0.9.8g and 0.9.8h [28 May 2008]
2684 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
2685 handshake which could lead to a cilent crash as found using the
2686 Codenomicon TLS test suite (CVE-2008-1672)
2687 [Steve Henson, Mark Cox]
2689 *) Fix double free in TLS server name extensions which could lead to
2690 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
2693 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
2695 Clear the error queue to ensure that error entries left from
2696 older function calls do not interfere with the correct operation.
2697 [Lutz Jaenicke, Erik de Castro Lopo]
2699 *) Remove root CA certificates of commercial CAs:
2701 The OpenSSL project does not recommend any specific CA and does not
2702 have any policy with respect to including or excluding any CA.
2703 Therefore it does not make any sense to ship an arbitrary selection
2704 of root CA certificates with the OpenSSL software.
2707 *) RSA OAEP patches to fix two separate invalid memory reads.
2708 The first one involves inputs when 'lzero' is greater than
2709 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
2710 before the beginning of from). The second one involves inputs where
2711 the 'db' section contains nothing but zeroes (there is a one-byte
2712 invalid read after the end of 'db').
2713 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2715 *) Partial backport from 0.9.9-dev:
2717 Introduce bn_mul_mont (dedicated Montgomery multiplication
2718 procedure) as a candidate for BIGNUM assembler implementation.
2719 While 0.9.9-dev uses assembler for various architectures, only
2720 x86_64 is available by default here in the 0.9.8 branch, and
2721 32-bit x86 is available through a compile-time setting.
2723 To try the 32-bit x86 assembler implementation, use Configure
2724 option "enable-montasm" (which exists only for this backport).
2726 As "enable-montasm" for 32-bit x86 disclaims code stability
2727 anyway, in this constellation we activate additional code
2728 backported from 0.9.9-dev for further performance improvements,
2729 namely BN_from_montgomery_word. (To enable this otherwise,
2730 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
2732 [Andy Polyakov (backport partially by Bodo Moeller)]
2734 *) Add TLS session ticket callback. This allows an application to set
2735 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
2736 values. This is useful for key rollover for example where several key
2737 sets may exist with different names.
2740 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
2741 This was broken until now in 0.9.8 releases, such that the only way
2742 a registered ENGINE could be used (assuming it initialises
2743 successfully on the host) was to explicitly set it as the default
2744 for the relevant algorithms. This is in contradiction with 0.9.7
2745 behaviour and the documentation. With this fix, when an ENGINE is
2746 registered into a given algorithm's table of implementations, the
2747 'uptodate' flag is reset so that auto-discovery will be used next
2748 time a new context for that algorithm attempts to select an
2750 [Ian Lister (tweaked by Geoff Thorpe)]
2752 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2753 implemention in the following ways:
2755 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2758 Lack of BER streaming support means one pass streaming processing is
2759 only supported if data is detached: setting the streaming flag is
2760 ignored for embedded content.
2762 CMS support is disabled by default and must be explicitly enabled
2763 with the enable-cms configuration option.
2766 *) Update the GMP engine glue to do direct copies between BIGNUM and
2767 mpz_t when openssl and GMP use the same limb size. Otherwise the
2768 existing "conversion via a text string export" trick is still used.
2769 [Paul Sheer <paulsheer@gmail.com>]
2771 *) Zlib compression BIO. This is a filter BIO which compressed and
2772 uncompresses any data passed through it.
2775 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2776 RFC3394 compatible AES key wrapping.
2779 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2780 sets string data without copying. X509_ALGOR_set0() and
2781 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2782 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2783 from an X509_ATTRIBUTE structure optionally checking it occurs only
2784 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2788 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2789 to get the expected BN_FLG_CONSTTIME behavior.
2790 [Bodo Moeller (Google)]
2794 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2795 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2796 - added some more tests to do_tests.pl
2797 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2798 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2799 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2800 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2801 - various changes to netware.pl to enable gcc-cross builds on Win32
2803 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2804 - various changes to fix missing prototype warnings
2805 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2806 - added AES, WHIRLPOOL and CPUID assembler code to build files
2807 - added missing AES assembler make rules to mk1mf.pl
2808 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2809 [Guenter Knauf <eflash@gmx.net>]
2811 *) Implement certificate status request TLS extension defined in RFC3546.
2812 A client can set the appropriate parameters and receive the encoded
2813 OCSP response via a callback. A server can query the supplied parameters
2814 and set the encoded OCSP response in the callback. Add simplified examples
2815 to s_client and s_server.
2818 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2820 *) Fix various bugs:
2821 + Binary incompatibility of ssl_ctx_st structure
2822 + DTLS interoperation with non-compliant servers
2823 + Don't call get_session_cb() without proposed session
2824 + Fix ia64 assembler code
2825 [Andy Polyakov, Steve Henson]
2827 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2829 *) DTLS Handshake overhaul. There were longstanding issues with
2830 OpenSSL DTLS implementation, which were making it impossible for
2831 RFC 4347 compliant client to communicate with OpenSSL server.
2832 Unfortunately just fixing these incompatibilities would "cut off"
2833 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2834 server keeps tolerating non RFC compliant syntax. The opposite is
2835 not true, 0.9.8f client can not communicate with earlier server.
2836 This update even addresses CVE-2007-4995.
2839 *) Changes to avoid need for function casts in OpenSSL: some compilers
2840 (gcc 4.2 and later) reject their use.
2841 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2844 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2845 RFC4507bis. The encrypted ticket format is an encrypted encoded
2846 SSL_SESSION structure, that way new session features are automatically
2849 If a client application caches session in an SSL_SESSION structure
2850 support is transparent because tickets are now stored in the encoded
2853 The SSL_CTX structure automatically generates keys for ticket
2854 protection in servers so again support should be possible
2855 with no application modification.
2857 If a client or server wishes to disable RFC4507 support then the option
2858 SSL_OP_NO_TICKET can be set.
2860 Add a TLS extension debugging callback to allow the contents of any client
2861 or server extensions to be examined.
2863 This work was sponsored by Google.
2866 *) Add initial support for TLS extensions, specifically for the server_name
2867 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2868 have new members for a host name. The SSL data structure has an
2869 additional member SSL_CTX *initial_ctx so that new sessions can be
2870 stored in that context to allow for session resumption, even after the
2871 SSL has been switched to a new SSL_CTX in reaction to a client's
2872 server_name extension.
2874 New functions (subject to change):
2876 SSL_get_servername()
2877 SSL_get_servername_type()
2880 New CTRL codes and macros (subject to change):
2882 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2883 - SSL_CTX_set_tlsext_servername_callback()
2884 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2885 - SSL_CTX_set_tlsext_servername_arg()
2886 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2888 openssl s_client has a new '-servername ...' option.
2890 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2891 '-key2 ...', '-servername_fatal' (subject to change). This allows
2892 testing the HostName extension for a specific single host name ('-cert'
2893 and '-key' remain fallbacks for handshakes without HostName
2894 negotiation). If the unrecogninzed_name alert has to be sent, this by
2895 default is a warning; it becomes fatal with the '-servername_fatal'
2898 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2900 *) Add AES and SSE2 assembly language support to VC++ build.
2903 *) Mitigate attack on final subtraction in Montgomery reduction.
2906 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2907 (which previously caused an internal error).
2910 *) Squeeze another 10% out of IGE mode when in != out.
2913 *) AES IGE mode speedup.
2914 [Dean Gaudet (Google)]
2916 *) Add the Korean symmetric 128-bit cipher SEED (see
2917 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2918 add SEED ciphersuites from RFC 4162:
2920 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2921 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2922 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2923 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2925 To minimize changes between patchlevels in the OpenSSL 0.9.8
2926 series, SEED remains excluded from compilation unless OpenSSL
2927 is configured with 'enable-seed'.
2928 [KISA, Bodo Moeller]
2930 *) Mitigate branch prediction attacks, which can be practical if a
2931 single processor is shared, allowing a spy process to extract
2932 information. For detailed background information, see
2933 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2934 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2935 and Necessary Software Countermeasures"). The core of the change
2936 are new versions BN_div_no_branch() and
2937 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2938 respectively, which are slower, but avoid the security-relevant
2939 conditional branches. These are automatically called by BN_div()
2940 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2941 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2942 remove a conditional branch.
2944 BN_FLG_CONSTTIME is the new name for the previous
2945 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2946 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2947 in the exponent causes BN_mod_exp_mont() to use the alternative
2948 implementation in BN_mod_exp_mont_consttime().) The old name
2949 remains as a deprecated alias.
2951 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2952 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2953 constant-time implementations for more than just exponentiation.
2954 Here too the old name is kept as a deprecated alias.
2956 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2957 the BN_BLINDING structure gets an independent copy of the
2958 modulus. This means that the previous "BIGNUM *m" argument to
2959 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2960 essentially becomes "const BIGNUM *m", although we can't actually
2961 change this in the header file before 0.9.9. It allows
2962 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2963 enable BN_FLG_CONSTTIME.
2965 [Matthew D Wood (Intel Corp)]
2967 *) In the SSL/TLS server implementation, be strict about session ID
2968 context matching (which matters if an application uses a single
2969 external cache for different purposes). Previously,
2970 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2971 set. This did ensure strict client verification, but meant that,
2972 with applications using a single external cache for quite
2973 different requirements, clients could circumvent ciphersuite
2974 restrictions for a given session ID context by starting a session
2975 in a different context.
2978 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2979 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2980 authentication-only ciphersuites.
2983 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2984 not complete and could lead to a possible single byte overflow
2985 (CVE-2007-5135) [Ben Laurie]
2987 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2989 *) Since AES128 and AES256 (and similarly Camellia128 and
2990 Camellia256) share a single mask bit in the logic of
2991 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2992 kludge to work properly if AES128 is available and AES256 isn't
2993 (or if Camellia128 is available and Camellia256 isn't).
2996 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2997 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2998 When a point or a seed is encoded in a BIT STRING, we need to
2999 prevent the removal of trailing zero bits to get the proper DER
3000 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
3001 of a NamedBitList, for which trailing 0 bits need to be removed.)
3004 *) Have SSL/TLS server implementation tolerate "mismatched" record
3005 protocol version while receiving ClientHello even if the
3006 ClientHello is fragmented. (The server can't insist on the
3007 particular protocol version it has chosen before the ServerHello
3008 message has informed the client about his choice.)
3011 *) Add RFC 3779 support.
3012 [Rob Austein for ARIN, Ben Laurie]
3014 *) Load error codes if they are not already present instead of using a
3015 static variable. This allows them to be cleanly unloaded and reloaded.
3016 Improve header file function name parsing.
3019 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
3020 or CAPABILITY handshake as required by RFCs.
3023 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
3025 *) Introduce limits to prevent malicious keys being able to
3026 cause a denial of service. (CVE-2006-2940)
3027 [Steve Henson, Bodo Moeller]
3029 *) Fix ASN.1 parsing of certain invalid structures that can result
3030 in a denial of service. (CVE-2006-2937) [Steve Henson]
3032 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3033 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3035 *) Fix SSL client code which could crash if connecting to a
3036 malicious SSLv2 server. (CVE-2006-4343)
3037 [Tavis Ormandy and Will Drewry, Google Security Team]
3039 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
3040 match only those. Before that, "AES256-SHA" would be interpreted
3041 as a pattern and match "AES128-SHA" too (since AES128-SHA got
3042 the same strength classification in 0.9.7h) as we currently only
3043 have a single AES bit in the ciphersuite description bitmap.
3044 That change, however, also applied to ciphersuite strings such as
3045 "RC4-MD5" that intentionally matched multiple ciphersuites --
3046 namely, SSL 2.0 ciphersuites in addition to the more common ones
3047 from SSL 3.0/TLS 1.0.
3049 So we change the selection algorithm again: Naming an explicit
3050 ciphersuite selects this one ciphersuite, and any other similar
3051 ciphersuite (same bitmap) from *other* protocol versions.
3052 Thus, "RC4-MD5" again will properly select both the SSL 2.0
3053 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
3055 Since SSL 2.0 does not have any ciphersuites for which the
3056 128/256 bit distinction would be relevant, this works for now.
3057 The proper fix will be to use different bits for AES128 and
3058 AES256, which would have avoided the problems from the beginning;
3059 however, bits are scarce, so we can only do this in a new release
3060 (not just a patchlevel) when we can change the SSL_CIPHER
3061 definition to split the single 'unsigned long mask' bitmap into
3062 multiple values to extend the available space.
3066 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
3068 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3069 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3071 *) Add AES IGE and biIGE modes.
3074 *) Change the Unix randomness entropy gathering to use poll() when
3075 possible instead of select(), since the latter has some
3076 undesirable limitations.
3077 [Darryl Miles via Richard Levitte and Bodo Moeller]
3079 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
3080 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
3081 cannot be implicitly activated as part of, e.g., the "AES" alias.
3082 However, please upgrade to OpenSSL 0.9.9[-dev] for
3083 non-experimental use of the ECC ciphersuites to get TLS extension
3084 support, which is required for curve and point format negotiation
3085 to avoid potential handshake problems.
3088 *) Disable rogue ciphersuites:
3090 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3091 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3092 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3094 The latter two were purportedly from
3095 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3098 Also deactivate the remaining ciphersuites from
3099 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3100 unofficial, and the ID has long expired.
3103 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3104 dual-core machines) and other potential thread-safety issues.
3107 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
3108 versions), which is now available for royalty-free use
3109 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
3110 Also, add Camellia TLS ciphersuites from RFC 4132.
3112 To minimize changes between patchlevels in the OpenSSL 0.9.8
3113 series, Camellia remains excluded from compilation unless OpenSSL
3114 is configured with 'enable-camellia'.
3117 *) Disable the padding bug check when compression is in use. The padding
3118 bug check assumes the first packet is of even length, this is not
3119 necessarily true if compresssion is enabled and can result in false
3120 positives causing handshake failure. The actual bug test is ancient
3121 code so it is hoped that implementations will either have fixed it by
3122 now or any which still have the bug do not support compression.
3125 Changes between 0.9.8a and 0.9.8b [04 May 2006]
3127 *) When applying a cipher rule check to see if string match is an explicit
3128 cipher suite and only match that one cipher suite if it is.
3131 *) Link in manifests for VC++ if needed.
3132 [Austin Ziegler <halostatue@gmail.com>]
3134 *) Update support for ECC-based TLS ciphersuites according to
3135 draft-ietf-tls-ecc-12.txt with proposed changes (but without
3136 TLS extensions, which are supported starting with the 0.9.9
3137 branch, not in the OpenSSL 0.9.8 branch).
3140 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
3141 opaque EVP_CIPHER_CTX handling.
3144 *) Fixes and enhancements to zlib compression code. We now only use
3145 "zlib1.dll" and use the default __cdecl calling convention on Win32
3146 to conform with the standards mentioned here:
3147 http://www.zlib.net/DLL_FAQ.txt
3148 Static zlib linking now works on Windows and the new --with-zlib-include
3149 --with-zlib-lib options to Configure can be used to supply the location
3150 of the headers and library. Gracefully handle case where zlib library
3154 *) Several fixes and enhancements to the OID generation code. The old code
3155 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
3156 handle numbers larger than ULONG_MAX, truncated printing and had a
3157 non standard OBJ_obj2txt() behaviour.
3160 *) Add support for building of engines under engine/ as shared libraries
3161 under VC++ build system.
3164 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
3165 Hopefully, we will not see any false combination of paths any more.
3168 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
3170 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3171 (part of SSL_OP_ALL). This option used to disable the
3172 countermeasure against man-in-the-middle protocol-version
3173 rollback in the SSL 2.0 server implementation, which is a bad
3174 idea. (CVE-2005-2969)
3176 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3177 for Information Security, National Institute of Advanced Industrial
3178 Science and Technology [AIST], Japan)]
3180 *) Add two function to clear and return the verify parameter flags.
3183 *) Keep cipherlists sorted in the source instead of sorting them at
3184 runtime, thus removing the need for a lock.
3187 *) Avoid some small subgroup attacks in Diffie-Hellman.
3188 [Nick Mathewson and Ben Laurie]
3190 *) Add functions for well-known primes.
3193 *) Extended Windows CE support.
3194 [Satoshi Nakamura and Andy Polyakov]
3196 *) Initialize SSL_METHOD structures at compile time instead of during
3197 runtime, thus removing the need for a lock.
3200 *) Make PKCS7_decrypt() work even if no certificate is supplied by
3201 attempting to decrypt each encrypted key in turn. Add support to
3205 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
3207 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
3210 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
3213 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
3214 key into the same file any more.
3217 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
3220 *) Add -utf8 command line and config file option to 'ca'.
3221 [Stefan <stf@udoma.org]
3223 *) Removed the macro des_crypt(), as it seems to conflict with some
3224 libraries. Use DES_crypt().
3227 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
3228 involves renaming the source and generated shared-libs for
3229 both. The engines will accept the corrected or legacy ids
3230 ('ncipher' and '4758_cca' respectively) when binding. NB,
3231 this only applies when building 'shared'.
3232 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
3234 *) Add attribute functions to EVP_PKEY structure. Modify
3235 PKCS12_create() to recognize a CSP name attribute and
3236 use it. Make -CSP option work again in pkcs12 utility.
3239 *) Add new functionality to the bn blinding code:
3240 - automatic re-creation of the BN_BLINDING parameters after
3241 a fixed number of uses (currently 32)
3242 - add new function for parameter creation
3243 - introduce flags to control the update behaviour of the
3244 BN_BLINDING parameters
3245 - hide BN_BLINDING structure
3246 Add a second BN_BLINDING slot to the RSA structure to improve
3247 performance when a single RSA object is shared among several
3251 *) Add support for DTLS.
3252 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
3254 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
3255 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
3258 *) Remove buggy and incompletet DH cert support from
3259 ssl/ssl_rsa.c and ssl/s3_both.c
3262 *) Use SHA-1 instead of MD5 as the default digest algorithm for
3263 the apps/openssl applications.
3266 *) Compile clean with "-Wall -Wmissing-prototypes
3267 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
3268 DEBUG_SAFESTACK must also be set.
3271 *) Change ./Configure so that certain algorithms can be disabled by default.
3272 The new counterpiece to "no-xxx" is "enable-xxx".
3274 The patented RC5 and MDC2 algorithms will now be disabled unless
3275 "enable-rc5" and "enable-mdc2", respectively, are specified.
3277 (IDEA remains enabled despite being patented. This is because IDEA
3278 is frequently required for interoperability, and there is no license
3279 fee for non-commercial use. As before, "no-idea" can be used to
3280 avoid this algorithm.)
3284 *) Add processing of proxy certificates (see RFC 3820). This work was
3285 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
3286 EGEE (Enabling Grids for E-science in Europe).
3289 *) RC4 performance overhaul on modern architectures/implementations, such
3290 as Intel P4, IA-64 and AMD64.
3293 *) New utility extract-section.pl. This can be used specify an alternative
3294 section number in a pod file instead of having to treat each file as
3295 a separate case in Makefile. This can be done by adding two lines to the
3298 =for comment openssl_section:XXX
3300 The blank line is mandatory.
3304 *) New arguments -certform, -keyform and -pass for s_client and s_server
3305 to allow alternative format key and certificate files and passphrase
3309 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
3310 update associated structures and add various utility functions.
3312 Add new policy related verify parameters, include policy checking in
3313 standard verify code. Enhance 'smime' application with extra parameters
3314 to support policy checking and print out.
3317 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
3318 Nehemiah processors. These extensions support AES encryption in hardware
3319 as well as RNG (though RNG support is currently disabled).
3320 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
3322 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
3325 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
3326 [Andy Polyakov and a number of other people]
3328 *) Improved PowerPC platform support. Most notably BIGNUM assembler
3329 implementation contributed by IBM.
3330 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
3332 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
3333 exponent rather than 'unsigned long'. There is a corresponding change to
3334 the new 'rsa_keygen' element of the RSA_METHOD structure.
3335 [Jelte Jansen, Geoff Thorpe]
3337 *) Functionality for creating the initial serial number file is now
3338 moved from CA.pl to the 'ca' utility with a new option -create_serial.
3340 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
3341 number file to 1, which is bound to cause problems. To avoid
3342 the problems while respecting compatibility between different 0.9.7
3343 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
3344 CA.pl for serial number initialization. With the new release 0.9.8,
3345 we can fix the problem directly in the 'ca' utility.)
3348 *) Reduced header interdepencies by declaring more opaque objects in
3349 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
3350 give fewer recursive includes, which could break lazy source code - so
3351 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
3352 developers should define this symbol when building and using openssl to
3353 ensure they track the recommended behaviour, interfaces, [etc], but
3354 backwards-compatible behaviour prevails when this isn't defined.
3357 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
3360 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
3361 This will generate a random key of the appropriate length based on the
3362 cipher context. The EVP_CIPHER can provide its own random key generation
3363 routine to support keys of a specific form. This is used in the des and
3364 3des routines to generate a key of the correct parity. Update S/MIME
3365 code to use new functions and hence generate correct parity DES keys.
3366 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
3367 valid (weak or incorrect parity).
3370 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
3371 as looking them up. This is useful when the verified structure may contain
3372 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
3373 present unless the new PKCS7_NO_CRL flag is asserted.
3376 *) Extend ASN1 oid configuration module. It now additionally accepts the
3379 shortName = some long name, 1.2.3.4
3382 *) Reimplemented the BN_CTX implementation. There is now no more static
3383 limitation on the number of variables it can handle nor the depth of the
3384 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
3385 information can now expand as required, and rather than having a single
3386 static array of bignums, BN_CTX now uses a linked-list of such arrays
3387 allowing it to expand on demand whilst maintaining the usefulness of
3388 BN_CTX's "bundling".
3391 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
3392 to allow all RSA operations to function using a single BN_CTX.
3395 *) Preliminary support for certificate policy evaluation and checking. This
3396 is initially intended to pass the tests outlined in "Conformance Testing
3397 of Relying Party Client Certificate Path Processing Logic" v1.07.
3400 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
3401 remained unused and not that useful. A variety of other little bignum
3402 tweaks and fixes have also been made continuing on from the audit (see
3406 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
3407 associated ASN1, EVP and SSL functions and old ASN1 macros.
3410 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
3411 and this should never fail. So the return value from the use of
3412 BN_set_word() (which can fail due to needless expansion) is now deprecated;
3413 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
3416 *) BN_CTX_get() should return zero-valued bignums, providing the same
3417 initialised value as BN_new().
3418 [Geoff Thorpe, suggested by Ulf Möller]
3420 *) Support for inhibitAnyPolicy certificate extension.
3423 *) An audit of the BIGNUM code is underway, for which debugging code is
3424 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
3425 is considered valid when processing BIGNUMs, and causes execution to
3426 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
3427 further steps are taken to deliberately pollute unused data in BIGNUM
3428 structures to try and expose faulty code further on. For now, openssl will
3429 (in its default mode of operation) continue to tolerate the inconsistent
3430 forms that it has tolerated in the past, but authors and packagers should
3431 consider trying openssl and their own applications when compiled with
3432 these debugging symbols defined. It will help highlight potential bugs in
3433 their own code, and will improve the test coverage for OpenSSL itself. At
3434 some point, these tighter rules will become openssl's default to improve
3435 maintainability, though the assert()s and other overheads will remain only
3436 in debugging configurations. See bn.h for more details.
3437 [Geoff Thorpe, Nils Larsch, Ulf Möller]
3439 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
3440 that can only be obtained through BN_CTX_new() (which implicitly
3441 initialises it). The presence of this function only made it possible
3442 to overwrite an existing structure (and cause memory leaks).
3445 *) Because of the callback-based approach for implementing LHASH as a
3446 template type, lh_insert() adds opaque objects to hash-tables and
3447 lh_doall() or lh_doall_arg() are typically used with a destructor callback
3448 to clean up those corresponding objects before destroying the hash table
3449 (and losing the object pointers). So some over-zealous constifications in
3450 LHASH have been relaxed so that lh_insert() does not take (nor store) the
3451 objects as "const" and the lh_doall[_arg] callback wrappers are not
3452 prototyped to have "const" restrictions on the object pointers they are
3453 given (and so aren't required to cast them away any more).
3456 *) The tmdiff.h API was so ugly and minimal that our own timing utility
3457 (speed) prefers to use its own implementation. The two implementations
3458 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
3459 its object type properly exposed (MS_TM) instead of casting to/from "char
3460 *". This may still change yet if someone realises MS_TM and "ms_time_***"
3461 aren't necessarily the greatest nomenclatures - but this is what was used
3462 internally to the implementation so I've used that for now.
3465 *) Ensure that deprecated functions do not get compiled when
3466 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
3467 the self-tests were still using deprecated key-generation functions so
3468 these have been updated also.
3471 *) Reorganise PKCS#7 code to separate the digest location functionality
3472 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
3473 New function PKCS7_set_digest() to set the digest type for PKCS#7
3474 digestedData type. Add additional code to correctly generate the
3475 digestedData type and add support for this type in PKCS7 initialization
3479 *) New function PKCS7_set0_type_other() this initializes a PKCS7
3480 structure of type "other".
3483 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
3484 sure the loop does correctly stop and breaking ("division by zero")
3485 modulus operations are not performed. The (pre-generated) prime
3486 table crypto/bn/bn_prime.h was already correct, but it could not be
3487 re-generated on some platforms because of the "division by zero"
3488 situation in the script.
3489 [Ralf S. Engelschall]
3491 *) Update support for ECC-based TLS ciphersuites according to
3492 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
3493 SHA-1 now is only used for "small" curves (where the
3494 representation of a field element takes up to 24 bytes); for
3495 larger curves, the field element resulting from ECDH is directly
3496 used as premaster secret.
3497 [Douglas Stebila (Sun Microsystems Laboratories)]
3499 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
3500 curve secp160r1 to the tests.
3501 [Douglas Stebila (Sun Microsystems Laboratories)]
3503 *) Add the possibility to load symbols globally with DSO.
3504 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
3506 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
3507 control of the error stack.
3510 *) Add support for STORE in ENGINE.
3513 *) Add the STORE type. The intention is to provide a common interface
3514 to certificate and key stores, be they simple file-based stores, or
3515 HSM-type store, or LDAP stores, or...
3516 NOTE: The code is currently UNTESTED and isn't really used anywhere.
3519 *) Add a generic structure called OPENSSL_ITEM. This can be used to
3520 pass a list of arguments to any function as well as provide a way
3521 for a function to pass data back to the caller.
3524 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
3525 works like BUF_strdup() but can be used to duplicate a portion of
3526 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
3530 *) Add the function sk_find_ex() which works like sk_find(), but will
3531 return an index to an element even if an exact match couldn't be
3532 found. The index is guaranteed to point at the element where the
3533 searched-for key would be inserted to preserve sorting order.
3536 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
3537 takes an extra flags argument for optional functionality. Currently,
3538 the following flags are defined:
3540 OBJ_BSEARCH_VALUE_ON_NOMATCH
3541 This one gets OBJ_bsearch_ex() to return a pointer to the first
3542 element where the comparing function returns a negative or zero
3545 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
3546 This one gets OBJ_bsearch_ex() to return a pointer to the first
3547 element where the comparing function returns zero. This is useful
3548 if there are more than one element where the comparing function
3552 *) Make it possible to create self-signed certificates with 'openssl ca'
3553 in such a way that the self-signed certificate becomes part of the
3554 CA database and uses the same mechanisms for serial number generation
3555 as all other certificate signing. The new flag '-selfsign' enables
3556 this functionality. Adapt CA.sh and CA.pl.in.
3559 *) Add functionality to check the public key of a certificate request
3560 against a given private. This is useful to check that a certificate
3561 request can be signed by that key (self-signing).
3564 *) Make it possible to have multiple active certificates with the same
3565 subject in the CA index file. This is done only if the keyword
3566 'unique_subject' is set to 'no' in the main CA section (default
3567 if 'CA_default') of the configuration file. The value is saved
3568 with the database itself in a separate index attribute file,
3569 named like the index file with '.attr' appended to the name.
3572 *) Generate muti valued AVAs using '+' notation in config files for
3576 *) Support for nameConstraints certificate extension.
3579 *) Support for policyConstraints certificate extension.
3582 *) Support for policyMappings certificate extension.
3585 *) Make sure the default DSA_METHOD implementation only uses its
3586 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
3587 and change its own handlers to be NULL so as to remove unnecessary
3588 indirection. This lets alternative implementations fallback to the
3589 default implementation more easily.
3592 *) Support for directoryName in GeneralName related extensions
3596 *) Make it possible to link applications using Makefile.shared.
3597 Make that possible even when linking against static libraries!
3600 *) Support for single pass processing for S/MIME signing. This now
3601 means that S/MIME signing can be done from a pipe, in addition
3602 cleartext signing (multipart/signed type) is effectively streaming
3603 and the signed data does not need to be all held in memory.
3605 This is done with a new flag PKCS7_STREAM. When this flag is set
3606 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
3607 is done after the data is output (and digests calculated) in
3608 SMIME_write_PKCS7().
3611 *) Add full support for -rpath/-R, both in shared libraries and
3612 applications, at least on the platforms where it's known how
3616 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
3617 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
3618 will now compute a table of multiples of the generator that
3619 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
3620 faster (notably in the case of a single point multiplication,
3621 scalar * generator).
3622 [Nils Larsch, Bodo Moeller]
3624 *) IPv6 support for certificate extensions. The various extensions
3625 which use the IP:a.b.c.d can now take IPv6 addresses using the
3626 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
3630 *) Added an ENGINE that implements RSA by performing private key
3631 exponentiations with the GMP library. The conversions to and from
3632 GMP's mpz_t format aren't optimised nor are any montgomery forms
3633 cached, and on x86 it appears OpenSSL's own performance has caught up.
3634 However there are likely to be other architectures where GMP could
3635 provide a boost. This ENGINE is not built in by default, but it can be
3636 specified at Configure time and should be accompanied by the necessary
3637 linker additions, eg;
3638 ./config -DOPENSSL_USE_GMP -lgmp
3641 *) "openssl engine" will not display ENGINE/DSO load failure errors when
3642 testing availability of engines with "-t" - the old behaviour is
3643 produced by increasing the feature's verbosity with "-tt".
3646 *) ECDSA routines: under certain error conditions uninitialized BN objects
3647 could be freed. Solution: make sure initialization is performed early
3648 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
3652 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
3653 and DH_METHOD (eg. by ENGINE implementations) to override the normal
3654 software implementations. For DSA and DH, parameter generation can
3655 also be overriden by providing the appropriate method callbacks.
3658 *) Change the "progress" mechanism used in key-generation and
3659 primality testing to functions that take a new BN_GENCB pointer in
3660 place of callback/argument pairs. The new API functions have "_ex"
3661 postfixes and the older functions are reimplemented as wrappers for
3662 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
3663 declarations of the old functions to help (graceful) attempts to
3664 migrate to the new functions. Also, the new key-generation API
3665 functions operate on a caller-supplied key-structure and return
3666 success/failure rather than returning a key or NULL - this is to
3667 help make "keygen" another member function of RSA_METHOD etc.
3669 Example for using the new callback interface:
3671 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
3675 BN_GENCB_set(&my_cb, my_callback, my_arg);
3677 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
3678 /* For the meaning of a, b in calls to my_callback(), see the
3679 * documentation of the function that calls the callback.
3680 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
3681 * my_callback should return 1 if it wants BN_is_prime_ex()
3682 * to continue, or 0 to stop.
3687 *) Change the ZLIB compression method to be stateful, and make it
3688 available to TLS with the number defined in
3689 draft-ietf-tls-compression-04.txt.
3692 *) Add the ASN.1 structures and functions for CertificatePair, which
3693 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
3695 CertificatePair ::= SEQUENCE {
3696 forward [0] Certificate OPTIONAL,
3697 reverse [1] Certificate OPTIONAL,
3698 -- at least one of the pair shall be present -- }
3700 Also implement the PEM functions to read and write certificate
3701 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
3703 This needed to be defined, mostly for the sake of the LDAP
3704 attribute crossCertificatePair, but may prove useful elsewhere as
3708 *) Make it possible to inhibit symlinking of shared libraries in
3709 Makefile.shared, for Cygwin's sake.
3712 *) Extend the BIGNUM API by creating a function
3713 void BN_set_negative(BIGNUM *a, int neg);
3714 and a macro that behave like
3715 int BN_is_negative(const BIGNUM *a);
3717 to avoid the need to access 'a->neg' directly in applications.
3720 *) Implement fast modular reduction for pseudo-Mersenne primes
3721 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
3722 EC_GROUP_new_curve_GFp() will now automatically use this
3724 [Nils Larsch <nla@trustcenter.de>]
3726 *) Add new lock type (CRYPTO_LOCK_BN).
3729 *) Change the ENGINE framework to automatically load engines
3730 dynamically from specific directories unless they could be
3731 found to already be built in or loaded. Move all the
3732 current engines except for the cryptodev one to a new
3734 The engines in engines/ are built as shared libraries if
3735 the "shared" options was given to ./Configure or ./config.
3736 Otherwise, they are inserted in libcrypto.a.
3737 /usr/local/ssl/engines is the default directory for dynamic
3738 engines, but that can be overriden at configure time through
3739 the usual use of --prefix and/or --openssldir, and at run
3740 time with the environment variable OPENSSL_ENGINES.
3741 [Geoff Thorpe and Richard Levitte]
3743 *) Add Makefile.shared, a helper makefile to build shared
3744 libraries. Addapt Makefile.org.
3747 *) Add version info to Win32 DLLs.
3748 [Peter 'Luna' Runestig" <peter@runestig.com>]
3750 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3751 can be added using this API to created arbitrary PKCS#12
3752 files while avoiding the low level API.
3754 New options to PKCS12_create(), key or cert can be NULL and
3755 will then be omitted from the output file. The encryption
3756 algorithm NIDs can be set to -1 for no encryption, the mac
3757 iteration count can be set to 0 to omit the mac.
3759 Enhance pkcs12 utility by making the -nokeys and -nocerts
3760 options work when creating a PKCS#12 file. New option -nomac
3761 to omit the mac, NONE can be set for an encryption algorithm.
3762 New code is modified to use the enhanced PKCS12_create()
3763 instead of the low level API.
3766 *) Extend ASN1 encoder to support indefinite length constructed
3767 encoding. This can output sequences tags and octet strings in
3768 this form. Modify pk7_asn1.c to support indefinite length
3769 encoding. This is experimental and needs additional code to
3770 be useful, such as an ASN1 bio and some enhanced streaming
3773 Extend template encode functionality so that tagging is passed
3774 down to the template encoder.
3777 *) Let 'openssl req' fail if an argument to '-newkey' is not
3778 recognized instead of using RSA as a default.
3781 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3782 As these are not official, they are not included in "ALL";
3783 the "ECCdraft" ciphersuite group alias can be used to select them.
3784 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3786 *) Add ECDH engine support.
3787 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3789 *) Add ECDH in new directory crypto/ecdh/.
3790 [Douglas Stebila (Sun Microsystems Laboratories)]
3792 *) Let BN_rand_range() abort with an error after 100 iterations
3793 without success (which indicates a broken PRNG).
3796 *) Change BN_mod_sqrt() so that it verifies that the input value
3797 is really the square of the return value. (Previously,
3798 BN_mod_sqrt would show GIGO behaviour.)
3801 *) Add named elliptic curves over binary fields from X9.62, SECG,
3802 and WAP/WTLS; add OIDs that were still missing.
3804 [Sheueling Chang Shantz and Douglas Stebila
3805 (Sun Microsystems Laboratories)]
3807 *) Extend the EC library for elliptic curves over binary fields
3808 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3811 EC_GF2m_simple_method
3815 EC_GROUP_new_curve_GF2m
3816 EC_GROUP_set_curve_GF2m
3817 EC_GROUP_get_curve_GF2m
3818 EC_POINT_set_affine_coordinates_GF2m
3819 EC_POINT_get_affine_coordinates_GF2m
3820 EC_POINT_set_compressed_coordinates_GF2m
3822 Point compression for binary fields is disabled by default for
3823 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3826 As binary polynomials are represented as BIGNUMs, various members
3827 of the EC_GROUP and EC_POINT data structures can be shared
3828 between the implementations for prime fields and binary fields;
3829 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3830 are essentially identical to their ..._GFp counterparts.
3831 (For simplicity, the '..._GFp' prefix has been dropped from
3832 various internal method names.)
3834 An internal 'field_div' method (similar to 'field_mul' and
3835 'field_sqr') has been added; this is used only for binary fields.
3837 [Sheueling Chang Shantz and Douglas Stebila
3838 (Sun Microsystems Laboratories)]
3840 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3841 through methods ('mul', 'precompute_mult').
3843 The generic implementations (now internally called 'ec_wNAF_mul'
3844 and 'ec_wNAF_precomputed_mult') remain the default if these
3845 methods are undefined.
3847 [Sheueling Chang Shantz and Douglas Stebila
3848 (Sun Microsystems Laboratories)]
3850 *) New function EC_GROUP_get_degree, which is defined through
3851 EC_METHOD. For curves over prime fields, this returns the bit
3852 length of the modulus.
3854 [Sheueling Chang Shantz and Douglas Stebila
3855 (Sun Microsystems Laboratories)]
3857 *) New functions EC_GROUP_dup, EC_POINT_dup.
3858 (These simply call ..._new and ..._copy).
3860 [Sheueling Chang Shantz and Douglas Stebila
3861 (Sun Microsystems Laboratories)]
3863 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3864 Polynomials are represented as BIGNUMs (where the sign bit is not
3865 used) in the following functions [macros]:
3868 BN_GF2m_sub [= BN_GF2m_add]
3869 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3870 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3871 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3873 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3874 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3875 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3876 BN_GF2m_cmp [= BN_ucmp]
3878 (Note that only the 'mod' functions are actually for fields GF(2^m).
3879 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3881 For some functions, an the irreducible polynomial defining a
3882 field can be given as an 'unsigned int[]' with strictly
3883 decreasing elements giving the indices of those bits that are set;
3884 i.e., p[] represents the polynomial
3885 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3887 p[0] > p[1] > ... > p[k] = 0.
3888 This applies to the following functions:
3893 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3894 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3896 BN_GF2m_mod_sqrt_arr
3897 BN_GF2m_mod_solve_quad_arr
3901 Conversion can be performed by the following functions:
3906 bntest.c has additional tests for binary polynomial arithmetic.
3908 Two implementations for BN_GF2m_mod_div() are available.
3909 The default algorithm simply uses BN_GF2m_mod_inv() and
3910 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3911 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3912 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3914 [Sheueling Chang Shantz and Douglas Stebila
3915 (Sun Microsystems Laboratories)]
3917 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3918 functionality is disabled at compile-time.
3919 [Douglas Stebila <douglas.stebila@sun.com>]
3921 *) Change default behaviour of 'openssl asn1parse' so that more
3922 information is visible when viewing, e.g., a certificate:
3924 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3925 mode the content of non-printable OCTET STRINGs is output in a
3926 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3927 avoid the appearance of a printable string.
3928 [Nils Larsch <nla@trustcenter.de>]
3930 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3932 EC_GROUP_set_asn1_flag()
3933 EC_GROUP_get_asn1_flag()
3934 EC_GROUP_set_point_conversion_form()
3935 EC_GROUP_get_point_conversion_form()
3936 These control ASN1 encoding details:
3937 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3938 has been set to OPENSSL_EC_NAMED_CURVE.
3939 - Points are encoded in uncompressed form by default; options for
3940 asn1_for are as for point2oct, namely
3941 POINT_CONVERSION_COMPRESSED
3942 POINT_CONVERSION_UNCOMPRESSED
3943 POINT_CONVERSION_HYBRID
3945 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3948 EC_GROUP_get0_seed()
3949 EC_GROUP_get_seed_len()
3950 This is used only for ASN1 purposes (so far).
3951 [Nils Larsch <nla@trustcenter.de>]
3953 *) Add 'field_type' member to EC_METHOD, which holds the NID
3954 of the appropriate field type OID. The new function
3955 EC_METHOD_get_field_type() returns this value.
3956 [Nils Larsch <nla@trustcenter.de>]
3961 EC_POINT_point2hex()
3962 EC_POINT_hex2point()
3963 providing useful interfaces to EC_POINT_point2oct() and
3964 EC_POINT_oct2point().
3965 [Nils Larsch <nla@trustcenter.de>]
3967 *) Change internals of the EC library so that the functions
3968 EC_GROUP_set_generator()
3969 EC_GROUP_get_generator()
3970 EC_GROUP_get_order()
3971 EC_GROUP_get_cofactor()
3972 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3973 to methods, which would lead to unnecessary code duplication when
3974 adding different types of curves.
3975 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3977 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3978 arithmetic, and such that modified wNAFs are generated
3979 (which avoid length expansion in many cases).
3982 *) Add a function EC_GROUP_check_discriminant() (defined via
3983 EC_METHOD) that verifies that the curve discriminant is non-zero.
3985 Add a function EC_GROUP_check() that makes some sanity tests
3986 on a EC_GROUP, its generator and order. This includes
3987 EC_GROUP_check_discriminant().
3988 [Nils Larsch <nla@trustcenter.de>]
3990 *) Add ECDSA in new directory crypto/ecdsa/.
3992 Add applications 'openssl ecparam' and 'openssl ecdsa'
3993 (these are based on 'openssl dsaparam' and 'openssl dsa').
3995 ECDSA support is also included in various other files across the
3996 library. Most notably,
3997 - 'openssl req' now has a '-newkey ecdsa:file' option;
3998 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3999 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
4000 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
4001 them suitable for ECDSA where domain parameters must be
4002 extracted before the specific public key;
4003 - ECDSA engine support has been added.
4004 [Nils Larsch <nla@trustcenter.de>]
4006 *) Include some named elliptic curves, and add OIDs from X9.62,
4007 SECG, and WAP/WTLS. Each curve can be obtained from the new
4009 EC_GROUP_new_by_curve_name(),
4010 and the list of available named curves can be obtained with
4011 EC_get_builtin_curves().
4012 Also add a 'curve_name' member to EC_GROUP objects, which can be
4014 EC_GROUP_set_curve_name()
4015 EC_GROUP_get_curve_name()
4016 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
4018 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
4019 was actually never needed) and in BN_mul(). The removal in BN_mul()
4020 required a small change in bn_mul_part_recursive() and the addition
4021 of the functions bn_cmp_part_words(), bn_sub_part_words() and
4022 bn_add_part_words(), which do the same thing as bn_cmp_words(),
4023 bn_sub_words() and bn_add_words() except they take arrays with
4027 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
4029 *) Cleanse PEM buffers before freeing them since they may contain
4031 [Benjamin Bennett <ben@psc.edu>]
4033 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
4034 a ciphersuite string such as "DEFAULT:RSA" cannot enable
4035 authentication-only ciphersuites.
4038 *) Since AES128 and AES256 share a single mask bit in the logic of
4039 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
4040 kludge to work properly if AES128 is available and AES256 isn't.
4043 *) Expand security boundary to match 1.1.1 module.
4046 *) Remove redundant features: hash file source, editing of test vectors
4047 modify fipsld to use external fips_premain.c signature.
4050 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
4051 run algorithm test programs.
4054 *) Make algorithm test programs more tolerant of whitespace.
4057 *) Have SSL/TLS server implementation tolerate "mismatched" record
4058 protocol version while receiving ClientHello even if the
4059 ClientHello is fragmented. (The server can't insist on the
4060 particular protocol version it has chosen before the ServerHello
4061 message has informed the client about his choice.)
4064 *) Load error codes if they are not already present instead of using a
4065 static variable. This allows them to be cleanly unloaded and reloaded.
4068 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
4070 *) Introduce limits to prevent malicious keys being able to
4071 cause a denial of service. (CVE-2006-2940)
4072 [Steve Henson, Bodo Moeller]
4074 *) Fix ASN.1 parsing of certain invalid structures that can result
4075 in a denial of service. (CVE-2006-2937) [Steve Henson]
4077 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
4078 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
4080 *) Fix SSL client code which could crash if connecting to a
4081 malicious SSLv2 server. (CVE-2006-4343)
4082 [Tavis Ormandy and Will Drewry, Google Security Team]
4084 *) Change ciphersuite string processing so that an explicit
4085 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
4086 will no longer include "AES128-SHA"), and any other similar
4087 ciphersuite (same bitmap) from *other* protocol versions (so that
4088 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
4089 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
4090 changes from 0.9.8b and 0.9.8d.
4093 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
4095 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
4096 (CVE-2006-4339) [Ben Laurie and Google Security Team]
4098 *) Change the Unix randomness entropy gathering to use poll() when
4099 possible instead of select(), since the latter has some
4100 undesirable limitations.
4101 [Darryl Miles via Richard Levitte and Bodo Moeller]
4103 *) Disable rogue ciphersuites:
4105 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
4106 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
4107 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
4109 The latter two were purportedly from
4110 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
4113 Also deactive the remaining ciphersuites from
4114 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
4115 unofficial, and the ID has long expired.
4118 *) Fix RSA blinding Heisenbug (problems sometimes occured on
4119 dual-core machines) and other potential thread-safety issues.
4122 Changes between 0.9.7i and 0.9.7j [04 May 2006]
4124 *) Adapt fipsld and the build system to link against the validated FIPS
4125 module in FIPS mode.
4128 *) Fixes for VC++ 2005 build under Windows.
4131 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
4132 from a Windows bash shell such as MSYS. It is autodetected from the
4133 "config" script when run from a VC++ environment. Modify standard VC++
4134 build to use fipscanister.o from the GNU make build.
4137 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
4139 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
4140 The value now differs depending on if you build for FIPS or not.
4141 BEWARE! A program linked with a shared FIPSed libcrypto can't be
4142 safely run with a non-FIPSed libcrypto, as it may crash because of
4143 the difference induced by this change.
4146 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
4148 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
4149 (part of SSL_OP_ALL). This option used to disable the
4150 countermeasure against man-in-the-middle protocol-version
4151 rollback in the SSL 2.0 server implementation, which is a bad
4152 idea. (CVE-2005-2969)
4154 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
4155 for Information Security, National Institute of Advanced Industrial
4156 Science and Technology [AIST], Japan)]
4158 *) Minimal support for X9.31 signatures and PSS padding modes. This is
4159 mainly for FIPS compliance and not fully integrated at this stage.
4162 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
4163 the exponentiation using a fixed-length exponent. (Otherwise,
4164 the information leaked through timing could expose the secret key
4165 after many signatures; cf. Bleichenbacher's attack on DSA with
4169 *) Make a new fixed-window mod_exp implementation the default for
4170 RSA, DSA, and DH private-key operations so that the sequence of
4171 squares and multiplies and the memory access pattern are
4172 independent of the particular secret key. This will mitigate
4173 cache-timing and potential related attacks.
4175 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
4176 and this is automatically used by BN_mod_exp_mont() if the new flag
4177 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
4178 will use this BN flag for private exponents unless the flag
4179 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
4180 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
4182 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
4184 *) Change the client implementation for SSLv23_method() and
4185 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
4186 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
4187 (Previously, the SSL 2.0 backwards compatible Client Hello
4188 message format would be used even with SSL_OP_NO_SSLv2.)
4191 *) Add support for smime-type MIME parameter in S/MIME messages which some
4195 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
4196 a threadsafe manner. Modify rsa code to use new function and add calls
4197 to dsa and dh code (which had race conditions before).
4200 *) Include the fixed error library code in the C error file definitions
4201 instead of fixing them up at runtime. This keeps the error code
4202 structures constant.
4205 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
4207 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
4210 *) Fixes for newer kerberos headers. NB: the casts are needed because
4211 the 'length' field is signed on one version and unsigned on another
4212 with no (?) obvious way to tell the difference, without these VC++
4213 complains. Also the "definition" of FAR (blank) is no longer included
4214 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
4215 some needed definitions.
4218 *) Undo Cygwin change.
4221 *) Added support for proxy certificates according to RFC 3820.
4222 Because they may be a security thread to unaware applications,
4223 they must be explicitely allowed in run-time. See
4224 docs/HOWTO/proxy_certificates.txt for further information.
4227 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
4229 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
4230 server and client random values. Previously
4231 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
4232 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
4234 This change has negligible security impact because:
4236 1. Server and client random values still have 24 bytes of pseudo random
4239 2. Server and client random values are sent in the clear in the initial
4242 3. The master secret is derived using the premaster secret (48 bytes in
4243 size for static RSA ciphersuites) as well as client server and random
4246 The OpenSSL team would like to thank the UK NISCC for bringing this issue
4249 [Stephen Henson, reported by UK NISCC]
4251 *) Use Windows randomness collection on Cygwin.
4254 *) Fix hang in EGD/PRNGD query when communication socket is closed
4255 prematurely by EGD/PRNGD.
4256 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
4258 *) Prompt for pass phrases when appropriate for PKCS12 input format.
4261 *) Back-port of selected performance improvements from development
4262 branch, as well as improved support for PowerPC platforms.
4265 *) Add lots of checks for memory allocation failure, error codes to indicate
4266 failure and freeing up memory if a failure occurs.
4267 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
4269 *) Add new -passin argument to dgst.
4272 *) Perform some character comparisons of different types in X509_NAME_cmp:
4273 this is needed for some certificates that reencode DNs into UTF8Strings
4274 (in violation of RFC3280) and can't or wont issue name rollover
4278 *) Make an explicit check during certificate validation to see that
4279 the CA setting in each certificate on the chain is correct. As a
4280 side effect always do the following basic checks on extensions,
4281 not just when there's an associated purpose to the check:
4283 - if there is an unhandled critical extension (unless the user
4284 has chosen to ignore this fault)
4285 - if the path length has been exceeded (if one is set at all)
4286 - that certain extensions fit the associated purpose (if one has
4290 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
4292 *) Avoid a race condition when CRLs are checked in a multi threaded
4293 environment. This would happen due to the reordering of the revoked
4294 entries during signature checking and serial number lookup. Now the
4295 encoding is cached and the serial number sort performed under a lock.
4296 Add new STACK function sk_is_sorted().
4299 *) Add Delta CRL to the extension code.
4302 *) Various fixes to s3_pkt.c so alerts are sent properly.
4303 [David Holmes <d.holmes@f5.com>]
4305 *) Reduce the chances of duplicate issuer name and serial numbers (in
4306 violation of RFC3280) using the OpenSSL certificate creation utilities.
4307 This is done by creating a random 64 bit value for the initial serial
4308 number when a serial number file is created or when a self signed
4309 certificate is created using 'openssl req -x509'. The initial serial
4310 number file is created using 'openssl x509 -next_serial' in CA.pl
4311 rather than being initialized to 1.
4314 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
4316 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
4317 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
4318 [Joe Orton, Steve Henson]
4320 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
4322 [Joe Orton, Steve Henson]
4324 *) Make it possible to have multiple active certificates with the same
4325 subject in the CA index file. This is done only if the keyword
4326 'unique_subject' is set to 'no' in the main CA section (default
4327 if 'CA_default') of the configuration file. The value is saved
4328 with the database itself in a separate index attribute file,
4329 named like the index file with '.attr' appended to the name.
4332 *) X509 verify fixes. Disable broken certificate workarounds when
4333 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
4334 keyUsage extension present. Don't accept CRLs with unhandled critical
4335 extensions: since verify currently doesn't process CRL extensions this
4336 rejects a CRL with *any* critical extensions. Add new verify error codes
4340 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
4341 A clarification of RFC2560 will require the use of OCTET STRINGs and
4342 some implementations cannot handle the current raw format. Since OpenSSL
4343 copies and compares OCSP nonces as opaque blobs without any attempt at
4344 parsing them this should not create any compatibility issues.
4347 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
4348 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
4349 this HMAC (and other) operations are several times slower than OpenSSL
4353 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
4354 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4356 *) Use the correct content when signing type "other".
4359 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
4361 *) Fix various bugs revealed by running the NISCC test suite:
4363 Stop out of bounds reads in the ASN1 code when presented with
4364 invalid tags (CVE-2003-0543 and CVE-2003-0544).
4366 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
4368 If verify callback ignores invalid public key errors don't try to check
4369 certificate signature with the NULL public key.
4373 *) New -ignore_err option in ocsp application to stop the server
4374 exiting on the first error in a request.
4377 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
4378 if the server requested one: as stated in TLS 1.0 and SSL 3.0
4382 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
4383 extra data after the compression methods not only for TLS 1.0
4384 but also for SSL 3.0 (as required by the specification).
4385 [Bodo Moeller; problem pointed out by Matthias Loepfe]
4387 *) Change X509_certificate_type() to mark the key as exported/exportable
4388 when it's 512 *bits* long, not 512 bytes.
4391 *) Change AES_cbc_encrypt() so it outputs exact multiple of
4392 blocks during encryption.
4395 *) Various fixes to base64 BIO and non blocking I/O. On write
4396 flushes were not handled properly if the BIO retried. On read
4397 data was not being buffered properly and had various logic bugs.
4398 This also affects blocking I/O when the data being decoded is a
4402 *) Various S/MIME bugfixes and compatibility changes:
4403 output correct application/pkcs7 MIME type if
4404 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
4405 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
4406 of files as .eml work). Correctly handle very long lines in MIME
4410 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
4412 *) Countermeasure against the Klima-Pokorny-Rosa extension of
4413 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
4414 a protocol version number mismatch like a decryption error
4415 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
4418 *) Turn on RSA blinding by default in the default implementation
4419 to avoid a timing attack. Applications that don't want it can call
4420 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
4421 They would be ill-advised to do so in most cases.
4422 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
4424 *) Change RSA blinding code so that it works when the PRNG is not
4425 seeded (in this case, the secret RSA exponent is abused as
4426 an unpredictable seed -- if it is not unpredictable, there
4427 is no point in blinding anyway). Make RSA blinding thread-safe
4428 by remembering the creator's thread ID in rsa->blinding and
4429 having all other threads use local one-time blinding factors
4430 (this requires more computation than sharing rsa->blinding, but
4431 avoids excessive locking; and if an RSA object is not shared
4432 between threads, blinding will still be very fast).
4435 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
4436 ENGINE as defaults for all supported algorithms irrespective of
4437 the 'flags' parameter. 'flags' is now honoured, so applications
4438 should make sure they are passing it correctly.
4441 *) Target "mingw" now allows native Windows code to be generated in
4442 the Cygwin environment as well as with the MinGW compiler.
4445 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
4447 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
4448 via timing by performing a MAC computation even if incorrrect
4449 block cipher padding has been found. This is a countermeasure
4450 against active attacks where the attacker has to distinguish
4451 between bad padding and a MAC verification error. (CVE-2003-0078)
4453 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
4454 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
4455 Martin Vuagnoux (EPFL, Ilion)]
4457 *) Make the no-err option work as intended. The intention with no-err
4458 is not to have the whole error stack handling routines removed from
4459 libcrypto, it's only intended to remove all the function name and
4460 reason texts, thereby removing some of the footprint that may not
4461 be interesting if those errors aren't displayed anyway.
4463 NOTE: it's still possible for any application or module to have it's
4464 own set of error texts inserted. The routines are there, just not
4465 used by default when no-err is given.
4468 *) Add support for FreeBSD on IA64.
4469 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
4471 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
4472 Kerberos function mit_des_cbc_cksum(). Before this change,
4473 the value returned by DES_cbc_cksum() was like the one from
4474 mit_des_cbc_cksum(), except the bytes were swapped.
4475 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
4477 *) Allow an application to disable the automatic SSL chain building.
4478 Before this a rather primitive chain build was always performed in
4479 ssl3_output_cert_chain(): an application had no way to send the
4480 correct chain if the automatic operation produced an incorrect result.
4482 Now the chain builder is disabled if either:
4484 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
4486 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
4488 The reasoning behind this is that an application would not want the
4489 auto chain building to take place if extra chain certificates are
4490 present and it might also want a means of sending no additional
4491 certificates (for example the chain has two certificates and the
4495 *) Add the possibility to build without the ENGINE framework.
4496 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
4498 *) Under Win32 gmtime() can return NULL: check return value in
4499 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
4502 *) DSA routines: under certain error conditions uninitialized BN objects
4503 could be freed. Solution: make sure initialization is performed early
4504 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
4505 Nils Larsch <nla@trustcenter.de> via PR#459)
4508 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
4509 checked on reconnect on the client side, therefore session resumption
4510 could still fail with a "ssl session id is different" error. This
4511 behaviour is masked when SSL_OP_ALL is used due to
4512 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
4513 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
4514 followup to PR #377.
4517 *) IA-32 assembler support enhancements: unified ELF targets, support
4518 for SCO/Caldera platforms, fix for Cygwin shared build.
4521 *) Add support for FreeBSD on sparc64. As a consequence, support for
4522 FreeBSD on non-x86 processors is separate from x86 processors on
4523 the config script, much like the NetBSD support.
4524 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
4526 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
4528 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
4531 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
4532 code (06) was taken as the first octet of the session ID and the last
4533 octet was ignored consequently. As a result SSLv2 client side session
4534 caching could not have worked due to the session ID mismatch between
4536 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
4540 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
4541 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
4545 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
4546 seems that in spite of existing for more than a year, many application
4547 author have done nothing to provide the necessary callbacks, which
4548 means that this particular engine will not work properly anywhere.
4549 This is a very unfortunate situation which forces us, in the name
4550 of usability, to give the hw_ncipher.c a static lock, which is part
4552 NOTE: This is for the 0.9.7 series ONLY. This hack will never
4553 appear in 0.9.8 or later. We EXPECT application authors to have
4554 dealt properly with this when 0.9.8 is released (unless we actually
4555 make such changes in the libcrypto locking code that changes will
4556 have to be made anyway).
4559 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
4560 octets have been read, EOF or an error occurs. Without this change
4561 some truncated ASN1 structures will not produce an error.
4564 *) Disable Heimdal support, since it hasn't been fully implemented.
4565 Still give the possibility to force the use of Heimdal, but with
4566 warnings and a request that patches get sent to openssl-dev.
4569 *) Add the VC-CE target, introduce the WINCE sysname, and add
4570 INSTALL.WCE and appropriate conditionals to make it build.
4571 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
4573 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
4574 cygssl-x.y.z.dll, where x, y and z are the major, minor and
4575 edit numbers of the version.
4576 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
4578 *) Introduce safe string copy and catenation functions
4579 (BUF_strlcpy() and BUF_strlcat()).
4580 [Ben Laurie (CHATS) and Richard Levitte]
4582 *) Avoid using fixed-size buffers for one-line DNs.
4583 [Ben Laurie (CHATS)]
4585 *) Add BUF_MEM_grow_clean() to avoid information leakage when
4586 resizing buffers containing secrets, and use where appropriate.
4587 [Ben Laurie (CHATS)]
4589 *) Avoid using fixed size buffers for configuration file location.
4590 [Ben Laurie (CHATS)]
4592 *) Avoid filename truncation for various CA files.
4593 [Ben Laurie (CHATS)]
4595 *) Use sizeof in preference to magic numbers.
4596 [Ben Laurie (CHATS)]
4598 *) Avoid filename truncation in cert requests.
4599 [Ben Laurie (CHATS)]
4601 *) Add assertions to check for (supposedly impossible) buffer
4603 [Ben Laurie (CHATS)]
4605 *) Don't cache truncated DNS entries in the local cache (this could
4606 potentially lead to a spoofing attack).
4607 [Ben Laurie (CHATS)]
4609 *) Fix various buffers to be large enough for hex/decimal
4610 representations in a platform independent manner.
4611 [Ben Laurie (CHATS)]
4613 *) Add CRYPTO_realloc_clean() to avoid information leakage when
4614 resizing buffers containing secrets, and use where appropriate.
4615 [Ben Laurie (CHATS)]
4617 *) Add BIO_indent() to avoid much slightly worrying code to do
4619 [Ben Laurie (CHATS)]
4621 *) Convert sprintf()/BIO_puts() to BIO_printf().
4622 [Ben Laurie (CHATS)]
4624 *) buffer_gets() could terminate with the buffer only half
4626 [Ben Laurie (CHATS)]
4628 *) Add assertions to prevent user-supplied crypto functions from
4629 overflowing internal buffers by having large block sizes, etc.
4630 [Ben Laurie (CHATS)]
4632 *) New OPENSSL_assert() macro (similar to assert(), but enabled
4634 [Ben Laurie (CHATS)]
4636 *) Eliminate unused copy of key in RC4.
4637 [Ben Laurie (CHATS)]
4639 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
4640 [Ben Laurie (CHATS)]
4642 *) Fix off-by-one error in EGD path.
4643 [Ben Laurie (CHATS)]
4645 *) If RANDFILE path is too long, ignore instead of truncating.
4646 [Ben Laurie (CHATS)]
4648 *) Eliminate unused and incorrectly sized X.509 structure
4650 [Ben Laurie (CHATS)]
4652 *) Eliminate unused and dangerous function knumber().
4653 [Ben Laurie (CHATS)]
4655 *) Eliminate unused and dangerous structure, KSSL_ERR.
4656 [Ben Laurie (CHATS)]
4658 *) Protect against overlong session ID context length in an encoded
4659 session object. Since these are local, this does not appear to be
4661 [Ben Laurie (CHATS)]
4663 *) Change from security patch (see 0.9.6e below) that did not affect
4664 the 0.9.6 release series:
4666 Remote buffer overflow in SSL3 protocol - an attacker could
4667 supply an oversized master key in Kerberos-enabled versions.
4669 [Ben Laurie (CHATS)]
4671 *) Change the SSL kerb5 codes to match RFC 2712.
4674 *) Make -nameopt work fully for req and add -reqopt switch.
4675 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
4677 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
4678 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
4680 *) Make sure tests can be performed even if the corresponding algorithms
4681 have been removed entirely. This was also the last step to make
4682 OpenSSL compilable with DJGPP under all reasonable conditions.
4683 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
4685 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
4686 to allow version independent disabling of normally unselected ciphers,
4687 which may be activated as a side-effect of selecting a single cipher.
4689 (E.g., cipher list string "RSA" enables ciphersuites that are left
4690 out of "ALL" because they do not provide symmetric encryption.
4691 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
4692 [Lutz Jaenicke, Bodo Moeller]
4694 *) Add appropriate support for separate platform-dependent build
4695 directories. The recommended way to make a platform-dependent
4696 build directory is the following (tested on Linux), maybe with
4699 # Place yourself outside of the OpenSSL source tree. In
4700 # this example, the environment variable OPENSSL_SOURCE
4701 # is assumed to contain the absolute OpenSSL source directory.
4702 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
4703 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
4704 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
4705 mkdir -p `dirname $F`
4706 ln -s $OPENSSL_SOURCE/$F $F
4709 To be absolutely sure not to disturb the source tree, a "make clean"
4710 is a good thing. If it isn't successfull, don't worry about it,
4711 it probably means the source directory is very clean.
4714 *) Make sure any ENGINE control commands make local copies of string
4715 pointers passed to them whenever necessary. Otherwise it is possible
4716 the caller may have overwritten (or deallocated) the original string
4717 data when a later ENGINE operation tries to use the stored values.
4718 [Götz Babin-Ebell <babinebell@trustcenter.de>]
4720 *) Improve diagnostics in file reading and command-line digests.
4721 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
4723 *) Add AES modes CFB and OFB to the object database. Correct an
4724 error in AES-CFB decryption.
4727 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
4728 allows existing EVP_CIPHER_CTX structures to be reused after
4729 calling EVP_*Final(). This behaviour is used by encryption
4730 BIOs and some applications. This has the side effect that
4731 applications must explicitly clean up cipher contexts with
4732 EVP_CIPHER_CTX_cleanup() or they will leak memory.
4735 *) Check the values of dna and dnb in bn_mul_recursive before calling
4736 bn_mul_comba (a non zero value means the a or b arrays do not contain
4737 n2 elements) and fallback to bn_mul_normal if either is not zero.
4740 *) Fix escaping of non-ASCII characters when using the -subj option
4741 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
4744 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
4745 form for "surname", serialNumber has no short form.
4746 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
4747 therefore remove "mail" short name for "internet 7".
4748 The OID for unique identifiers in X509 certificates is
4749 x500UniqueIdentifier, not uniqueIdentifier.
4750 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
4753 *) Add an "init" command to the ENGINE config module and auto initialize
4754 ENGINEs. Without any "init" command the ENGINE will be initialized
4755 after all ctrl commands have been executed on it. If init=1 the
4756 ENGINE is initailized at that point (ctrls before that point are run
4757 on the uninitialized ENGINE and after on the initialized one). If
4758 init=0 then the ENGINE will not be iniatialized at all.
4761 *) Fix the 'app_verify_callback' interface so that the user-defined
4762 argument is actually passed to the callback: In the
4763 SSL_CTX_set_cert_verify_callback() prototype, the callback
4764 declaration has been changed from
4767 int (*cb)(X509_STORE_CTX *,void *);
4768 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
4769 i=s->ctx->app_verify_callback(&ctx)
4770 has been changed into
4771 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
4773 To update applications using SSL_CTX_set_cert_verify_callback(),
4774 a dummy argument can be added to their callback functions.
4775 [D. K. Smetters <smetters@parc.xerox.com>]
4777 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
4778 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
4780 *) Add and OPENSSL_LOAD_CONF define which will cause
4781 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
4782 This allows older applications to transparently support certain
4783 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
4784 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
4785 load the config file and OPENSSL_add_all_algorithms_conf() which will
4786 always load it have also been added.
4789 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
4790 Adjust NIDs and EVP layer.
4791 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4793 *) Config modules support in openssl utility.
4795 Most commands now load modules from the config file,
4796 though in a few (such as version) this isn't done
4797 because it couldn't be used for anything.
4799 In the case of ca and req the config file used is
4800 the same as the utility itself: that is the -config
4801 command line option can be used to specify an
4805 *) Move default behaviour from OPENSSL_config(). If appname is NULL
4806 use "openssl_conf" if filename is NULL use default openssl config file.
4809 *) Add an argument to OPENSSL_config() to allow the use of an alternative
4810 config section name. Add a new flag to tolerate a missing config file
4811 and move code to CONF_modules_load_file().
4814 *) Support for crypto accelerator cards from Accelerated Encryption
4815 Processing, www.aep.ie. (Use engine 'aep')
4816 The support was copied from 0.9.6c [engine] and adapted/corrected
4817 to work with the new engine framework.
4818 [AEP Inc. and Richard Levitte]
4820 *) Support for SureWare crypto accelerator cards from Baltimore
4821 Technologies. (Use engine 'sureware')
4822 The support was copied from 0.9.6c [engine] and adapted
4823 to work with the new engine framework.
4826 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
4827 make the newer ENGINE framework commands for the CHIL engine work.
4828 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
4830 *) Make it possible to produce shared libraries on ReliantUNIX.
4831 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
4833 *) Add the configuration target debug-linux-ppro.
4834 Make 'openssl rsa' use the general key loading routines
4835 implemented in apps.c, and make those routines able to
4836 handle the key format FORMAT_NETSCAPE and the variant
4838 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4840 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4841 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4843 *) Add -keyform to rsautl, and document -engine.
4844 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
4846 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
4847 BIO_R_NO_SUCH_FILE error code rather than the generic
4848 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
4851 *) Add new functions
4853 ERR_peek_last_error_line
4854 ERR_peek_last_error_line_data.
4855 These are similar to
4858 ERR_peek_error_line_data,
4859 but report on the latest error recorded rather than the first one
4860 still in the error queue.
4861 [Ben Laurie, Bodo Moeller]
4863 *) default_algorithms option in ENGINE config module. This allows things
4865 default_algorithms = ALL
4866 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
4869 *) Prelminary ENGINE config module.
4872 *) New experimental application configuration code.
4875 *) Change the AES code to follow the same name structure as all other
4876 symmetric ciphers, and behave the same way. Move everything to
4877 the directory crypto/aes, thereby obsoleting crypto/rijndael.
4878 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4880 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
4881 [Ben Laurie and Theo de Raadt]
4883 *) Add option to output public keys in req command.
4884 [Massimiliano Pala madwolf@openca.org]
4886 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
4887 (up to about 10% better than before for P-192 and P-224).
4890 *) New functions/macros
4892 SSL_CTX_set_msg_callback(ctx, cb)
4893 SSL_CTX_set_msg_callback_arg(ctx, arg)
4894 SSL_set_msg_callback(ssl, cb)
4895 SSL_set_msg_callback_arg(ssl, arg)
4897 to request calling a callback function
4899 void cb(int write_p, int version, int content_type,
4900 const void *buf, size_t len, SSL *ssl, void *arg)
4902 whenever a protocol message has been completely received
4903 (write_p == 0) or sent (write_p == 1). Here 'version' is the
4904 protocol version according to which the SSL library interprets
4905 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
4906 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
4907 the content type as defined in the SSL 3.0/TLS 1.0 protocol
4908 specification (change_cipher_spec(20), alert(21), handshake(22)).
4909 'buf' and 'len' point to the actual message, 'ssl' to the
4910 SSL object, and 'arg' is the application-defined value set by
4911 SSL[_CTX]_set_msg_callback_arg().
4913 'openssl s_client' and 'openssl s_server' have new '-msg' options
4914 to enable a callback that displays all protocol messages.
4917 *) Change the shared library support so shared libraries are built as
4918 soon as the corresponding static library is finished, and thereby get
4919 openssl and the test programs linked against the shared library.
4920 This still only happens when the keyword "shard" has been given to
4921 the configuration scripts.
4923 NOTE: shared library support is still an experimental thing, and
4924 backward binary compatibility is still not guaranteed.
4925 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
4927 *) Add support for Subject Information Access extension.
4928 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4930 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
4931 additional bytes when new memory had to be allocated, not just
4932 when reusing an existing buffer.
4935 *) New command line and configuration option 'utf8' for the req command.
4936 This allows field values to be specified as UTF8 strings.
4939 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
4940 runs for the former and machine-readable output for the latter.
4943 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
4944 of the e-mail address in the DN (i.e., it will go into a certificate
4945 extension only). The new configuration file option 'email_in_dn = no'
4946 has the same effect.
4947 [Massimiliano Pala madwolf@openca.org]
4949 *) Change all functions with names starting with des_ to be starting
4950 with DES_ instead. Add wrappers that are compatible with libdes,
4951 but are named _ossl_old_des_*. Finally, add macros that map the
4952 des_* symbols to the corresponding _ossl_old_des_* if libdes
4953 compatibility is desired. If OpenSSL 0.9.6c compatibility is
4954 desired, the des_* symbols will be mapped to DES_*, with one
4957 Since we provide two compatibility mappings, the user needs to
4958 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
4959 compatibility is desired. The default (i.e., when that macro
4960 isn't defined) is OpenSSL 0.9.6c compatibility.
4962 There are also macros that enable and disable the support of old
4963 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
4964 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
4965 are defined, the default will apply: to support the old des routines.
4967 In either case, one must include openssl/des.h to get the correct
4968 definitions. Do not try to just include openssl/des_old.h, that
4971 NOTE: This is a major break of an old API into a new one. Software
4972 authors are encouraged to switch to the DES_ style functions. Some
4973 time in the future, des_old.h and the libdes compatibility functions
4974 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
4975 default), and then completely removed.
4978 *) Test for certificates which contain unsupported critical extensions.
4979 If such a certificate is found during a verify operation it is
4980 rejected by default: this behaviour can be overridden by either
4981 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
4982 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
4983 X509_supported_extension() has also been added which returns 1 if a
4984 particular extension is supported.
4987 *) Modify the behaviour of EVP cipher functions in similar way to digests
4988 to retain compatibility with existing code.
4991 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
4992 compatibility with existing code. In particular the 'ctx' parameter does
4993 not have to be to be initialized before the call to EVP_DigestInit() and
4994 it is tidied up after a call to EVP_DigestFinal(). New function
4995 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
4996 EVP_MD_CTX_copy() changed to not require the destination to be
4997 initialized valid and new function EVP_MD_CTX_copy_ex() added which
4998 requires the destination to be valid.
5000 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
5001 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
5004 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
5005 so that complete 'Handshake' protocol structures are kept in memory
5006 instead of overwriting 'msg_type' and 'length' with 'body' data.
5009 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
5010 [Massimo Santin via Richard Levitte]
5012 *) Major restructuring to the underlying ENGINE code. This includes
5013 reduction of linker bloat, separation of pure "ENGINE" manipulation
5014 (initialisation, etc) from functionality dealing with implementations
5015 of specific crypto iterfaces. This change also introduces integrated
5016 support for symmetric ciphers and digest implementations - so ENGINEs
5017 can now accelerate these by providing EVP_CIPHER and EVP_MD
5018 implementations of their own. This is detailed in crypto/engine/README
5019 as it couldn't be adequately described here. However, there are a few
5020 API changes worth noting - some RSA, DSA, DH, and RAND functions that
5021 were changed in the original introduction of ENGINE code have now
5022 reverted back - the hooking from this code to ENGINE is now a good
5023 deal more passive and at run-time, operations deal directly with
5024 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
5025 dereferencing through an ENGINE pointer any more. Also, the ENGINE
5026 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
5027 they were not being used by the framework as there is no concept of a
5028 BIGNUM_METHOD and they could not be generalised to the new
5029 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
5030 ENGINE_cpy() has been removed as it cannot be consistently defined in
5034 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
5037 *) Change mkdef.pl to sort symbols that get the same entry number,
5038 and make sure the automatically generated functions ERR_load_*
5039 become part of libeay.num as well.
5042 *) New function SSL_renegotiate_pending(). This returns true once
5043 renegotiation has been requested (either SSL_renegotiate() call
5044 or HelloRequest/ClientHello receveived from the peer) and becomes
5045 false once a handshake has been completed.
5046 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
5047 sends a HelloRequest, but does not ensure that a handshake takes
5048 place. SSL_renegotiate_pending() is useful for checking if the
5049 client has followed the request.)
5052 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
5053 By default, clients may request session resumption even during
5054 renegotiation (if session ID contexts permit); with this option,
5055 session resumption is possible only in the first handshake.
5057 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
5058 more bits available for options that should not be part of
5059 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
5062 *) Add some demos for certificate and certificate request creation.
5065 *) Make maximum certificate chain size accepted from the peer application
5066 settable (SSL*_get/set_max_cert_list()), as proposed by
5067 "Douglas E. Engert" <deengert@anl.gov>.
5070 *) Add support for shared libraries for Unixware-7
5071 (Boyd Lynn Gerber <gerberb@zenez.com>).
5074 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
5075 be done prior to destruction. Use this to unload error strings from
5076 ENGINEs that load their own error strings. NB: This adds two new API
5077 functions to "get" and "set" this destroy handler in an ENGINE.
5080 *) Alter all existing ENGINE implementations (except "openssl" and
5081 "openbsd") to dynamically instantiate their own error strings. This
5082 makes them more flexible to be built both as statically-linked ENGINEs
5083 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
5084 Also, add stub code to each that makes building them as self-contained
5085 shared-libraries easier (see README.ENGINE).
5088 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
5089 implementations into applications that are completely implemented in
5090 self-contained shared-libraries. The "dynamic" ENGINE exposes control
5091 commands that can be used to configure what shared-library to load and
5092 to control aspects of the way it is handled. Also, made an update to
5093 the README.ENGINE file that brings its information up-to-date and
5094 provides some information and instructions on the "dynamic" ENGINE
5095 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
5098 *) Make it possible to unload ranges of ERR strings with a new
5099 "ERR_unload_strings" function.
5102 *) Add a copy() function to EVP_MD.
5105 *) Make EVP_MD routines take a context pointer instead of just the
5106 md_data void pointer.
5109 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
5110 that the digest can only process a single chunk of data
5111 (typically because it is provided by a piece of
5112 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
5113 is only going to provide a single chunk of data, and hence the
5114 framework needn't accumulate the data for oneshot drivers.
5117 *) As with "ERR", make it possible to replace the underlying "ex_data"
5118 functions. This change also alters the storage and management of global
5119 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
5120 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
5121 index counters. The API functions that use this state have been changed
5122 to take a "class_index" rather than pointers to the class's local STACK
5123 and counter, and there is now an API function to dynamically create new
5124 classes. This centralisation allows us to (a) plug a lot of the
5125 thread-safety problems that existed, and (b) makes it possible to clean
5126 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
5127 such data would previously have always leaked in application code and
5128 workarounds were in place to make the memory debugging turn a blind eye
5129 to it. Application code that doesn't use this new function will still
5130 leak as before, but their memory debugging output will announce it now
5131 rather than letting it slide.
5133 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
5134 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
5135 has a return value to indicate success or failure.
5138 *) Make it possible to replace the underlying "ERR" functions such that the
5139 global state (2 LHASH tables and 2 locks) is only used by the "default"
5140 implementation. This change also adds two functions to "get" and "set"
5141 the implementation prior to it being automatically set the first time
5142 any other ERR function takes place. Ie. an application can call "get",
5143 pass the return value to a module it has just loaded, and that module
5144 can call its own "set" function using that value. This means the
5145 module's "ERR" operations will use (and modify) the error state in the
5146 application and not in its own statically linked copy of OpenSSL code.
5149 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
5150 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
5151 the operation, and provides a more encapsulated way for external code
5152 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
5153 to use these functions rather than manually incrementing the counts.
5155 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
5158 *) Add EVP test program.
5161 *) Add symmetric cipher support to ENGINE. Expect the API to change!
5164 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
5165 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
5166 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
5167 These allow a CRL to be built without having to access X509_CRL fields
5168 directly. Modify 'ca' application to use new functions.
5171 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
5172 bug workarounds. Rollback attack detection is a security feature.
5173 The problem will only arise on OpenSSL servers when TLSv1 is not
5174 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
5175 Software authors not wanting to support TLSv1 will have special reasons
5176 for their choice and can explicitly enable this option.
5177 [Bodo Moeller, Lutz Jaenicke]
5179 *) Rationalise EVP so it can be extended: don't include a union of
5180 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
5181 (similar to those existing for EVP_CIPHER_CTX).
5186 EVP_MD_CTX_init(&md); /* new function call */
5187 EVP_DigestInit(&md, EVP_sha1());
5188 EVP_DigestUpdate(&md, in, len);
5189 EVP_DigestFinal(&md, out, NULL);
5190 EVP_MD_CTX_cleanup(&md); /* new function call */
5194 *) Make DES key schedule conform to the usual scheme, as well as
5195 correcting its structure. This means that calls to DES functions
5196 now have to pass a pointer to a des_key_schedule instead of a
5197 plain des_key_schedule (which was actually always a pointer
5200 des_key_schedule ks;
5202 des_set_key_checked(..., &ks);
5203 des_ncbc_encrypt(..., &ks, ...);
5205 (Note that a later change renames 'des_...' into 'DES_...'.)
5208 *) Initial reduction of linker bloat: the use of some functions, such as
5209 PEM causes large amounts of unused functions to be linked in due to
5210 poor organisation. For example pem_all.c contains every PEM function
5211 which has a knock on effect of linking in large amounts of (unused)
5212 ASN1 code. Grouping together similar functions and splitting unrelated
5213 functions prevents this.
5216 *) Cleanup of EVP macros.
5219 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
5220 correct _ecb suffix.
5223 *) Add initial OCSP responder support to ocsp application. The
5224 revocation information is handled using the text based index
5225 use by the ca application. The responder can either handle
5226 requests generated internally, supplied in files (for example
5227 via a CGI script) or using an internal minimal server.
5230 *) Add configuration choices to get zlib compression for TLS.
5233 *) Changes to Kerberos SSL for RFC 2712 compliance:
5234 1. Implemented real KerberosWrapper, instead of just using
5235 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
5236 2. Implemented optional authenticator field of KerberosWrapper.
5238 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
5239 and authenticator structs; see crypto/krb5/.
5241 Generalized Kerberos calls to support multiple Kerberos libraries.
5242 [Vern Staats <staatsvr@asc.hpc.mil>,
5243 Jeffrey Altman <jaltman@columbia.edu>
5244 via Richard Levitte]
5246 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
5247 already does with RSA. testdsa.h now has 'priv_key/pub_key'
5248 values for each of the key sizes rather than having just
5249 parameters (and 'speed' generating keys each time).
5252 *) Speed up EVP routines.
5255 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
5256 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
5257 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
5258 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
5260 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
5261 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
5262 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
5265 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
5267 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
5270 *) Added the OS2-EMX target.
5271 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
5273 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
5274 to support NCONF routines in extension code. New function CONF_set_nconf()
5275 to allow functions which take an NCONF to also handle the old LHASH
5276 structure: this means that the old CONF compatible routines can be
5277 retained (in particular wrt extensions) without having to duplicate the
5278 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
5281 *) Enhance the general user interface with mechanisms for inner control
5282 and with possibilities to have yes/no kind of prompts.
5285 *) Change all calls to low level digest routines in the library and
5286 applications to use EVP. Add missing calls to HMAC_cleanup() and
5287 don't assume HMAC_CTX can be copied using memcpy().
5288 [Verdon Walker <VWalker@novell.com>, Steve Henson]
5290 *) Add the possibility to control engines through control names but with
5291 arbitrary arguments instead of just a string.
5292 Change the key loaders to take a UI_METHOD instead of a callback
5293 function pointer. NOTE: this breaks binary compatibility with earlier
5294 versions of OpenSSL [engine].
5295 Adapt the nCipher code for these new conditions and add a card insertion
5299 *) Enhance the general user interface with mechanisms to better support
5300 dialog box interfaces, application-defined prompts, the possibility
5301 to use defaults (for example default passwords from somewhere else)
5302 and interrupts/cancellations.
5305 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
5306 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
5309 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
5310 tidy up some unnecessarily weird code in 'sk_new()').
5311 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
5313 *) Change the key loading routines for ENGINEs to use the same kind
5314 callback (pem_password_cb) as all other routines that need this
5318 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
5319 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
5320 than this minimum value is recommended.
5323 *) New random seeder for OpenVMS, using the system process statistics
5324 that are easily reachable.
5327 *) Windows apparently can't transparently handle global
5328 variables defined in DLLs. Initialisations such as:
5330 const ASN1_ITEM *it = &ASN1_INTEGER_it;
5332 wont compile. This is used by the any applications that need to
5333 declare their own ASN1 modules. This was fixed by adding the option
5334 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
5335 needed for static libraries under Win32.
5338 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
5339 setting of purpose and trust fields. New X509_STORE trust and
5340 purpose functions and tidy up setting in other SSL functions.
5343 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
5344 structure. These are inherited by X509_STORE_CTX when it is
5345 initialised. This allows various defaults to be set in the
5346 X509_STORE structure (such as flags for CRL checking and custom
5347 purpose or trust settings) for functions which only use X509_STORE_CTX
5348 internally such as S/MIME.
5350 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
5351 trust settings if they are not set in X509_STORE. This allows X509_STORE
5352 purposes and trust (in S/MIME for example) to override any set by default.
5354 Add command line options for CRL checking to smime, s_client and s_server
5358 *) Initial CRL based revocation checking. If the CRL checking flag(s)
5359 are set then the CRL is looked up in the X509_STORE structure and
5360 its validity and signature checked, then if the certificate is found
5361 in the CRL the verify fails with a revoked error.
5363 Various new CRL related callbacks added to X509_STORE_CTX structure.
5365 Command line options added to 'verify' application to support this.
5367 This needs some additional work, such as being able to handle multiple
5368 CRLs with different times, extension based lookup (rather than just
5369 by subject name) and ultimately more complete V2 CRL extension
5373 *) Add a general user interface API (crypto/ui/). This is designed
5374 to replace things like des_read_password and friends (backward
5375 compatibility functions using this new API are provided).
5376 The purpose is to remove prompting functions from the DES code
5377 section as well as provide for prompting through dialog boxes in
5378 a window system and the like.
5381 *) Add "ex_data" support to ENGINE so implementations can add state at a
5382 per-structure level rather than having to store it globally.
5385 *) Make it possible for ENGINE structures to be copied when retrieved by
5386 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
5387 This causes the "original" ENGINE structure to act like a template,
5388 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
5389 operational state can be localised to each ENGINE structure, despite the
5390 fact they all share the same "methods". New ENGINE structures returned in
5391 this case have no functional references and the return value is the single
5392 structural reference. This matches the single structural reference returned
5393 by ENGINE_by_id() normally, when it is incremented on the pre-existing
5397 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
5398 needs to match any other type at all we need to manually clear the
5402 *) Changes to the "openssl engine" utility to include;
5403 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
5404 about an ENGINE's available control commands.
5405 - executing control commands from command line arguments using the
5406 '-pre' and '-post' switches. '-post' is only used if '-t' is
5407 specified and the ENGINE is successfully initialised. The syntax for
5408 the individual commands are colon-separated, for example;
5409 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
5412 *) New dynamic control command support for ENGINEs. ENGINEs can now
5413 declare their own commands (numbers), names (strings), descriptions,
5414 and input types for run-time discovery by calling applications. A
5415 subset of these commands are implicitly classed as "executable"
5416 depending on their input type, and only these can be invoked through
5417 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
5418 can be based on user input, config files, etc). The distinction is
5419 that "executable" commands cannot return anything other than a boolean
5420 result and can only support numeric or string input, whereas some
5421 discoverable commands may only be for direct use through
5422 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
5423 pointers, or other custom uses. The "executable" commands are to
5424 support parameterisations of ENGINE behaviour that can be
5425 unambiguously defined by ENGINEs and used consistently across any
5426 OpenSSL-based application. Commands have been added to all the
5427 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
5428 control over shared-library paths without source code alterations.
5431 *) Changed all ENGINE implementations to dynamically allocate their
5432 ENGINEs rather than declaring them statically. Apart from this being
5433 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
5434 this also allows the implementations to compile without using the
5435 internal engine_int.h header.
5438 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
5439 'const' value. Any code that should be able to modify a RAND_METHOD
5440 should already have non-const pointers to it (ie. they should only
5441 modify their own ones).
5444 *) Made a variety of little tweaks to the ENGINE code.
5445 - "atalla" and "ubsec" string definitions were moved from header files
5446 to C code. "nuron" string definitions were placed in variables
5447 rather than hard-coded - allowing parameterisation of these values
5448 later on via ctrl() commands.
5449 - Removed unused "#if 0"'d code.
5450 - Fixed engine list iteration code so it uses ENGINE_free() to release
5451 structural references.
5452 - Constified the RAND_METHOD element of ENGINE structures.
5453 - Constified various get/set functions as appropriate and added
5454 missing functions (including a catch-all ENGINE_cpy that duplicates
5455 all ENGINE values onto a new ENGINE except reference counts/state).
5456 - Removed NULL parameter checks in get/set functions. Setting a method
5457 or function to NULL is a way of cancelling out a previously set
5458 value. Passing a NULL ENGINE parameter is just plain stupid anyway
5459 and doesn't justify the extra error symbols and code.
5460 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
5461 flags from engine_int.h to engine.h.
5462 - Changed prototypes for ENGINE handler functions (init(), finish(),
5463 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
5466 *) Implement binary inversion algorithm for BN_mod_inverse in addition
5467 to the algorithm using long division. The binary algorithm can be
5468 used only if the modulus is odd. On 32-bit systems, it is faster
5469 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
5470 roughly 5-15% for 256-bit moduli), so we use it only for moduli
5471 up to 450 bits. In 64-bit environments, the binary algorithm
5472 appears to be advantageous for much longer moduli; here we use it
5473 for moduli up to 2048 bits.
5476 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
5477 could not support the combine flag in choice fields.
5480 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
5481 extensions from a certificate request to the certificate.
5484 *) Allow multiple 'certopt' and 'nameopt' options to be separated
5485 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
5486 file: this allows the display of the certificate about to be
5487 signed to be customised, to allow certain fields to be included
5488 or excluded and extension details. The old system didn't display
5489 multicharacter strings properly, omitted fields not in the policy
5490 and couldn't display additional details such as extensions.
5493 *) Function EC_POINTs_mul for multiple scalar multiplication
5494 of an arbitrary number of elliptic curve points
5495 \sum scalars[i]*points[i],
5496 optionally including the generator defined for the EC_GROUP:
5497 scalar*generator + \sum scalars[i]*points[i].
5499 EC_POINT_mul is a simple wrapper function for the typical case
5500 that the point list has just one item (besides the optional
5504 *) First EC_METHODs for curves over GF(p):
5506 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
5507 operations and provides various method functions that can also
5508 operate with faster implementations of modular arithmetic.
5510 EC_GFp_mont_method() reuses most functions that are part of
5511 EC_GFp_simple_method, but uses Montgomery arithmetic.
5513 [Bodo Moeller; point addition and point doubling
5514 implementation directly derived from source code provided by
5515 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
5517 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
5518 crypto/ec/ec_lib.c):
5520 Curves are EC_GROUP objects (with an optional group generator)
5521 based on EC_METHODs that are built into the library.
5523 Points are EC_POINT objects based on EC_GROUP objects.
5525 Most of the framework would be able to handle curves over arbitrary
5526 finite fields, but as there are no obvious types for fields other
5527 than GF(p), some functions are limited to that for now.
5530 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
5531 that the file contains a complete HTTP response.
5534 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
5535 change the def and num file printf format specifier from "%-40sXXX"
5536 to "%-39s XXX". The latter will always guarantee a space after the
5537 field while the former will cause them to run together if the field
5538 is 40 of more characters long.
5541 *) Constify the cipher and digest 'method' functions and structures
5542 and modify related functions to take constant EVP_MD and EVP_CIPHER
5546 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
5547 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
5550 *) Modify EVP_Digest*() routines so they now return values. Although the
5551 internal software routines can never fail additional hardware versions
5555 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
5557 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
5558 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
5561 ERR_R_NESTED_ASN1_ERROR
5563 ERR_R_MISSING_ASN1_EOS
5564 were 4 .. 9, conflicting with
5565 ERR_LIB_RSA (= ERR_R_RSA_LIB)
5567 ERR_LIB_PEM (= ERR_R_PEM_LIB).
5568 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
5570 Add new error code 'ERR_R_INTERNAL_ERROR'.
5573 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
5577 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
5578 sets the subject name for a new request or supersedes the
5579 subject name in a given request. Formats that can be parsed are
5580 'CN=Some Name, OU=myOU, C=IT'
5582 'CN=Some Name/OU=myOU/C=IT'.
5584 Add options '-batch' and '-verbose' to 'openssl req'.
5585 [Massimiliano Pala <madwolf@hackmasters.net>]
5587 *) Introduce the possibility to access global variables through
5588 functions on platform were that's the best way to handle exporting
5589 global variables in shared libraries. To enable this functionality,
5590 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
5591 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
5592 is normally done by Configure or something similar).
5594 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
5595 in the source file (foo.c) like this:
5597 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
5598 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
5600 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
5601 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
5603 OPENSSL_DECLARE_GLOBAL(int,foo);
5604 #define foo OPENSSL_GLOBAL_REF(foo)
5605 OPENSSL_DECLARE_GLOBAL(double,bar);
5606 #define bar OPENSSL_GLOBAL_REF(bar)
5608 The #defines are very important, and therefore so is including the
5609 header file everywhere where the defined globals are used.
5611 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
5612 of ASN.1 items, but that structure is a bit different.
5614 The largest change is in util/mkdef.pl which has been enhanced with
5615 better and easier to understand logic to choose which symbols should
5616 go into the Windows .def files as well as a number of fixes and code
5617 cleanup (among others, algorithm keywords are now sorted
5618 lexicographically to avoid constant rewrites).
5621 *) In BN_div() keep a copy of the sign of 'num' before writing the
5622 result to 'rm' because if rm==num the value will be overwritten
5623 and produce the wrong result if 'num' is negative: this caused
5624 problems with BN_mod() and BN_nnmod().
5627 *) Function OCSP_request_verify(). This checks the signature on an
5628 OCSP request and verifies the signer certificate. The signer
5629 certificate is just checked for a generic purpose and OCSP request
5633 *) Add OCSP_check_validity() function to check the validity of OCSP
5634 responses. OCSP responses are prepared in real time and may only
5635 be a few seconds old. Simply checking that the current time lies
5636 between thisUpdate and nextUpdate max reject otherwise valid responses
5637 caused by either OCSP responder or client clock inaccuracy. Instead
5638 we allow thisUpdate and nextUpdate to fall within a certain period of
5639 the current time. The age of the response can also optionally be
5640 checked. Two new options -validity_period and -status_age added to
5644 *) If signature or public key algorithm is unrecognized print out its
5645 OID rather that just UNKNOWN.
5648 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
5649 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
5650 ID to be generated from the issuer certificate alone which can then be
5651 passed to OCSP_id_issuer_cmp().
5654 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
5655 ASN1 modules to export functions returning ASN1_ITEM pointers
5656 instead of the ASN1_ITEM structures themselves. This adds several
5657 new macros which allow the underlying ASN1 function/structure to
5658 be accessed transparently. As a result code should not use ASN1_ITEM
5659 references directly (such as &X509_it) but instead use the relevant
5660 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
5661 use of the new ASN1 code on platforms where exporting structures
5662 is problematical (for example in shared libraries) but exporting
5663 functions returning pointers to structures is not.
5666 *) Add support for overriding the generation of SSL/TLS session IDs.
5667 These callbacks can be registered either in an SSL_CTX or per SSL.
5668 The purpose of this is to allow applications to control, if they wish,
5669 the arbitrary values chosen for use as session IDs, particularly as it
5670 can be useful for session caching in multiple-server environments. A
5671 command-line switch for testing this (and any client code that wishes
5672 to use such a feature) has been added to "s_server".
5673 [Geoff Thorpe, Lutz Jaenicke]
5675 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
5676 of the form '#if defined(...) || defined(...) || ...' and
5677 '#if !defined(...) && !defined(...) && ...'. This also avoids
5678 the growing number of special cases it was previously handling.
5681 *) Make all configuration macros available for application by making
5682 sure they are available in opensslconf.h, by giving them names starting
5683 with "OPENSSL_" to avoid conflicts with other packages and by making
5684 sure e_os2.h will cover all platform-specific cases together with
5686 Additionally, it is now possible to define configuration/platform-
5687 specific names (called "system identities"). In the C code, these
5688 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
5689 macro with the name beginning with "OPENSSL_SYS_", which is determined
5690 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
5694 *) New option -set_serial to 'req' and 'x509' this allows the serial
5695 number to use to be specified on the command line. Previously self
5696 signed certificates were hard coded with serial number 0 and the
5697 CA options of 'x509' had to use a serial number in a file which was
5701 *) New options to 'ca' utility to support V2 CRL entry extensions.
5702 Currently CRL reason, invalidity date and hold instruction are
5703 supported. Add new CRL extensions to V3 code and some new objects.
5706 *) New function EVP_CIPHER_CTX_set_padding() this is used to
5707 disable standard block padding (aka PKCS#5 padding) in the EVP
5708 API, which was previously mandatory. This means that the data is
5709 not padded in any way and so the total length much be a multiple
5710 of the block size, otherwise an error occurs.
5713 *) Initial (incomplete) OCSP SSL support.
5716 *) New function OCSP_parse_url(). This splits up a URL into its host,
5717 port and path components: primarily to parse OCSP URLs. New -url
5718 option to ocsp utility.
5721 *) New nonce behavior. The return value of OCSP_check_nonce() now
5722 reflects the various checks performed. Applications can decide
5723 whether to tolerate certain situations such as an absent nonce
5724 in a response when one was present in a request: the ocsp application
5725 just prints out a warning. New function OCSP_add1_basic_nonce()
5726 this is to allow responders to include a nonce in a response even if
5727 the request is nonce-less.
5730 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
5731 skipped when using openssl x509 multiple times on a single input file,
5732 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
5735 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
5736 set string type: to handle setting ASN1_TIME structures. Fix ca
5737 utility to correctly initialize revocation date of CRLs.
5740 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
5741 the clients preferred ciphersuites and rather use its own preferences.
5742 Should help to work around M$ SGC (Server Gated Cryptography) bug in
5743 Internet Explorer by ensuring unchanged hash method during stepup.
5744 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
5747 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
5748 to aes and add a new 'exist' option to print out symbols that don't
5752 *) Additional options to ocsp utility to allow flags to be set and
5753 additional certificates supplied.
5756 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
5757 OCSP client a number of certificate to only verify the response
5761 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
5762 handle the new API. Currently only ECB, CBC modes supported. Add new
5765 Add TLS AES ciphersuites as described in RFC3268, "Advanced
5766 Encryption Standard (AES) Ciphersuites for Transport Layer
5767 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
5768 not enabled by default and were not part of the "ALL" ciphersuite
5769 alias because they were not yet official; they could be
5770 explicitly requested by specifying the "AESdraft" ciphersuite
5771 group alias. In the final release of OpenSSL 0.9.7, the group
5772 alias is called "AES" and is part of "ALL".)
5773 [Ben Laurie, Steve Henson, Bodo Moeller]
5775 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
5776 request to response.
5779 *) Functions for OCSP responders. OCSP_request_onereq_count(),
5780 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
5781 extract information from a certificate request. OCSP_response_create()
5782 creates a response and optionally adds a basic response structure.
5783 OCSP_basic_add1_status() adds a complete single response to a basic
5784 response and returns the OCSP_SINGLERESP structure just added (to allow
5785 extensions to be included for example). OCSP_basic_add1_cert() adds a
5786 certificate to a basic response and OCSP_basic_sign() signs a basic
5787 response with various flags. New helper functions ASN1_TIME_check()
5788 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
5789 (converts ASN1_TIME to GeneralizedTime).
5792 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
5793 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
5794 structure from a certificate. X509_pubkey_digest() digests the public_key
5795 contents: this is used in various key identifiers.
5798 *) Make sk_sort() tolerate a NULL argument.
5799 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
5801 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
5802 passed by the function are trusted implicitly. If any of them signed the
5803 response then it is assumed to be valid and is not verified.
5806 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
5807 to data. This was previously part of the PKCS7 ASN1 code. This
5808 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
5809 [Steve Henson, reported by Kenneth R. Robinette
5810 <support@securenetterm.com>]
5812 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
5813 routines: without these tracing memory leaks is very painful.
5814 Fix leaks in PKCS12 and PKCS7 routines.
5817 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
5818 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
5819 effectively meant GeneralizedTime would never be used. Now it
5820 is initialised to -1 but X509_time_adj() now has to check the value
5821 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
5822 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
5823 [Steve Henson, reported by Kenneth R. Robinette
5824 <support@securenetterm.com>]
5826 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
5827 result in a zero length in the ASN1_INTEGER structure which was
5828 not consistent with the structure when d2i_ASN1_INTEGER() was used
5829 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
5830 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
5831 where it did not print out a minus for negative ASN1_INTEGER.
5834 *) Add summary printout to ocsp utility. The various functions which
5835 convert status values to strings have been renamed to:
5836 OCSP_response_status_str(), OCSP_cert_status_str() and
5837 OCSP_crl_reason_str() and are no longer static. New options
5838 to verify nonce values and to disable verification. OCSP response
5839 printout format cleaned up.
5842 *) Add additional OCSP certificate checks. These are those specified
5843 in RFC2560. This consists of two separate checks: the CA of the
5844 certificate being checked must either be the OCSP signer certificate
5845 or the issuer of the OCSP signer certificate. In the latter case the
5846 OCSP signer certificate must contain the OCSP signing extended key
5847 usage. This check is performed by attempting to match the OCSP
5848 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
5849 in the OCSP_CERTID structures of the response.
5852 *) Initial OCSP certificate verification added to OCSP_basic_verify()
5853 and related routines. This uses the standard OpenSSL certificate
5854 verify routines to perform initial checks (just CA validity) and
5855 to obtain the certificate chain. Then additional checks will be
5856 performed on the chain. Currently the root CA is checked to see
5857 if it is explicitly trusted for OCSP signing. This is used to set
5858 a root CA as a global signing root: that is any certificate that
5859 chains to that CA is an acceptable OCSP signing certificate.
5862 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
5863 extensions from a separate configuration file.
5864 As when reading extensions from the main configuration file,
5865 the '-extensions ...' option may be used for specifying the
5867 [Massimiliano Pala <madwolf@comune.modena.it>]
5869 *) New OCSP utility. Allows OCSP requests to be generated or
5870 read. The request can be sent to a responder and the output
5871 parsed, outputed or printed in text form. Not complete yet:
5872 still needs to check the OCSP response validity.
5875 *) New subcommands for 'openssl ca':
5876 'openssl ca -status <serial>' prints the status of the cert with
5877 the given serial number (according to the index file).
5878 'openssl ca -updatedb' updates the expiry status of certificates
5880 [Massimiliano Pala <madwolf@comune.modena.it>]
5882 *) New '-newreq-nodes' command option to CA.pl. This is like
5883 '-newreq', but calls 'openssl req' with the '-nodes' option
5884 so that the resulting key is not encrypted.
5885 [Damien Miller <djm@mindrot.org>]
5887 *) New configuration for the GNU Hurd.
5888 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
5890 *) Initial code to implement OCSP basic response verify. This
5891 is currently incomplete. Currently just finds the signer's
5892 certificate and verifies the signature on the response.
5895 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
5896 value of OPENSSLDIR. This is available via the new '-d' option
5897 to 'openssl version', and is also included in 'openssl version -a'.
5900 *) Allowing defining memory allocation callbacks that will be given
5901 file name and line number information in additional arguments
5902 (a const char* and an int). The basic functionality remains, as
5903 well as the original possibility to just replace malloc(),
5904 realloc() and free() by functions that do not know about these
5905 additional arguments. To register and find out the current
5906 settings for extended allocation functions, the following
5907 functions are provided:
5909 CRYPTO_set_mem_ex_functions
5910 CRYPTO_set_locked_mem_ex_functions
5911 CRYPTO_get_mem_ex_functions
5912 CRYPTO_get_locked_mem_ex_functions
5914 These work the same way as CRYPTO_set_mem_functions and friends.
5915 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
5916 extended allocation function is enabled.
5917 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
5918 a conventional allocation function is enabled.
5919 [Richard Levitte, Bodo Moeller]
5921 *) Finish off removing the remaining LHASH function pointer casts.
5922 There should no longer be any prototype-casting required when using
5923 the LHASH abstraction, and any casts that remain are "bugs". See
5924 the callback types and macros at the head of lhash.h for details
5925 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
5928 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
5929 If /dev/[u]random devices are not available or do not return enough
5930 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
5932 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
5933 /etc/entropy will be queried once each in this sequence, quering stops
5934 when enough entropy was collected without querying more sockets.
5937 *) Change the Unix RAND_poll() variant to be able to poll several
5938 random devices, as specified by DEVRANDOM, until a sufficient amount
5939 of data has been collected. We spend at most 10 ms on each file
5940 (select timeout) and read in non-blocking mode. DEVRANDOM now
5941 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
5942 (previously it was just the string "/dev/urandom"), so on typical
5943 platforms the 10 ms delay will never occur.
5944 Also separate out the Unix variant to its own file, rand_unix.c.
5945 For VMS, there's a currently-empty rand_vms.c.
5948 *) Move OCSP client related routines to ocsp_cl.c. These
5949 provide utility functions which an application needing
5950 to issue a request to an OCSP responder and analyse the
5951 response will typically need: as opposed to those which an
5952 OCSP responder itself would need which will be added later.
5954 OCSP_request_sign() signs an OCSP request with an API similar
5955 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
5956 response. OCSP_response_get1_basic() extracts basic response
5957 from response. OCSP_resp_find_status(): finds and extracts status
5958 information from an OCSP_CERTID structure (which will be created
5959 when the request structure is built). These are built from lower
5960 level functions which work on OCSP_SINGLERESP structures but
5961 wont normally be used unless the application wishes to examine
5962 extensions in the OCSP response for example.
5964 Replace nonce routines with a pair of functions.
5965 OCSP_request_add1_nonce() adds a nonce value and optionally
5966 generates a random value. OCSP_check_nonce() checks the
5967 validity of the nonce in an OCSP response.
5970 *) Change function OCSP_request_add() to OCSP_request_add0_id().
5971 This doesn't copy the supplied OCSP_CERTID and avoids the
5972 need to free up the newly created id. Change return type
5973 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
5974 This can then be used to add extensions to the request.
5975 Deleted OCSP_request_new(), since most of its functionality
5976 is now in OCSP_REQUEST_new() (and the case insensitive name
5977 clash) apart from the ability to set the request name which
5978 will be added elsewhere.
5981 *) Update OCSP API. Remove obsolete extensions argument from
5982 various functions. Extensions are now handled using the new
5983 OCSP extension code. New simple OCSP HTTP function which
5984 can be used to send requests and parse the response.
5987 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
5988 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
5989 uses the special reorder version of SET OF to sort the attributes
5990 and reorder them to match the encoded order. This resolves a long
5991 standing problem: a verify on a PKCS7 structure just after signing
5992 it used to fail because the attribute order did not match the
5993 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
5994 it uses the received order. This is necessary to tolerate some broken
5995 software that does not order SET OF. This is handled by encoding
5996 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
5997 to produce the required SET OF.
6000 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
6001 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
6002 files to get correct declarations of the ASN.1 item variables.
6005 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
6006 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
6007 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
6008 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
6009 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
6010 ASN1_ITEM and no wrapper functions.
6013 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
6014 replace the old function pointer based I/O routines. Change most of
6015 the *_d2i_bio() and *_d2i_fp() functions to use these.
6018 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
6019 lines, recognice more "algorithms" that can be deselected, and make
6020 it complain about algorithm deselection that isn't recognised.
6023 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
6024 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
6025 to use new functions. Add NO_ASN1_OLD which can be set to remove
6026 some old style ASN1 functions: this can be used to determine if old
6027 code will still work when these eventually go away.
6030 *) New extension functions for OCSP structures, these follow the
6031 same conventions as certificates and CRLs.
6034 *) New function X509V3_add1_i2d(). This automatically encodes and
6035 adds an extension. Its behaviour can be customised with various
6036 flags to append, replace or delete. Various wrappers added for
6037 certifcates and CRLs.
6040 *) Fix to avoid calling the underlying ASN1 print routine when
6041 an extension cannot be parsed. Correct a typo in the
6042 OCSP_SERVICELOC extension. Tidy up print OCSP format.
6045 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
6046 entries for variables.
6049 *) Add functionality to apps/openssl.c for detecting locking
6050 problems: As the program is single-threaded, all we have
6051 to do is register a locking callback using an array for
6052 storing which locks are currently held by the program.
6055 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
6056 SSL_get_ex_data_X509_STORE_idx(), which is used in
6057 ssl_verify_cert_chain() and thus can be called at any time
6058 during TLS/SSL handshakes so that thread-safety is essential.
6059 Unfortunately, the ex_data design is not at all suited
6060 for multi-threaded use, so it probably should be abolished.
6063 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
6064 [Broadcom, tweaked and integrated by Geoff Thorpe]
6066 *) Move common extension printing code to new function
6067 X509V3_print_extensions(). Reorganise OCSP print routines and
6068 implement some needed OCSP ASN1 functions. Add OCSP extensions.
6071 *) New function X509_signature_print() to remove duplication in some
6075 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
6076 set (this was treated exactly the same as SET OF previously). This
6077 is used to reorder the STACK representing the structure to match the
6078 encoding. This will be used to get round a problem where a PKCS7
6079 structure which was signed could not be verified because the STACK
6080 order did not reflect the encoded order.
6083 *) Reimplement the OCSP ASN1 module using the new code.
6086 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
6087 for its ASN1 operations. The old style function pointers still exist
6088 for now but they will eventually go away.
6091 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
6092 completely replaces the old ASN1 functionality with a table driven
6093 encoder and decoder which interprets an ASN1_ITEM structure describing
6094 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
6095 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
6096 has also been converted to the new form.
6099 *) Change BN_mod_exp_recp so that negative moduli are tolerated
6100 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
6101 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
6102 for negative moduli.
6105 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
6106 of not touching the result's sign bit.
6109 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
6113 *) Changed the LHASH code to use prototypes for callbacks, and created
6114 macros to declare and implement thin (optionally static) functions
6115 that provide type-safety and avoid function pointer casting for the
6116 type-specific callbacks.
6119 *) Added Kerberos Cipher Suites to be used with TLS, as written in
6121 [Veers Staats <staatsvr@asc.hpc.mil>,
6122 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
6124 *) Reformat the FAQ so the different questions and answers can be divided
6125 in sections depending on the subject.
6128 *) Have the zlib compression code load ZLIB.DLL dynamically under
6132 *) New function BN_mod_sqrt for computing square roots modulo a prime
6133 (using the probabilistic Tonelli-Shanks algorithm unless
6134 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
6135 be handled deterministically).
6136 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6138 *) Make BN_mod_inverse faster by explicitly handling small quotients
6139 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
6140 512 bits], about 30% for larger ones [1024 or 2048 bits].)
6143 *) New function BN_kronecker.
6146 *) Fix BN_gcd so that it works on negative inputs; the result is
6147 positive unless both parameters are zero.
6148 Previously something reasonably close to an infinite loop was
6149 possible because numbers could be growing instead of shrinking
6150 in the implementation of Euclid's algorithm.
6153 *) Fix BN_is_word() and BN_is_one() macros to take into account the
6154 sign of the number in question.
6156 Fix BN_is_word(a,w) to work correctly for w == 0.
6158 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
6159 because its test if the absolute value of 'a' equals 'w'.
6160 Note that BN_abs_is_word does *not* handle w == 0 reliably;
6161 it exists mostly for use in the implementations of BN_is_zero(),
6162 BN_is_one(), and BN_is_word().
6165 *) New function BN_swap.
6168 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
6169 the exponentiation functions are more likely to produce reasonable
6170 results on negative inputs.
6173 *) Change BN_mod_mul so that the result is always non-negative.
6174 Previously, it could be negative if one of the factors was negative;
6175 I don't think anyone really wanted that behaviour.
6178 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
6179 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
6180 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
6181 and add new functions:
6190 BN_mod_lshift1_quick
6194 These functions always generate non-negative results.
6196 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
6197 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
6199 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
6200 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
6201 be reduced modulo m.
6202 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6205 The following entry accidentily appeared in the CHANGES file
6206 distributed with OpenSSL 0.9.7. The modifications described in
6207 it do *not* apply to OpenSSL 0.9.7.
6209 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6210 was actually never needed) and in BN_mul(). The removal in BN_mul()
6211 required a small change in bn_mul_part_recursive() and the addition
6212 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6213 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6214 bn_sub_words() and bn_add_words() except they take arrays with
6219 *) In 'openssl passwd', verify passwords read from the terminal
6220 unless the '-salt' option is used (which usually means that
6221 verification would just waste user's time since the resulting
6222 hash is going to be compared with some given password hash)
6223 or the new '-noverify' option is used.
6225 This is an incompatible change, but it does not affect
6226 non-interactive use of 'openssl passwd' (passwords on the command
6227 line, '-stdin' option, '-in ...' option) and thus should not
6231 *) Remove all references to RSAref, since there's no more need for it.
6234 *) Make DSO load along a path given through an environment variable
6235 (SHLIB_PATH) with shl_load().
6238 *) Constify the ENGINE code as a result of BIGNUM constification.
6239 Also constify the RSA code and most things related to it. In a
6240 few places, most notable in the depth of the ASN.1 code, ugly
6241 casts back to non-const were required (to be solved at a later
6245 *) Make it so the openssl application has all engines loaded by default.
6248 *) Constify the BIGNUM routines a little more.
6251 *) Add the following functions:
6253 ENGINE_load_cswift()
6255 ENGINE_load_atalla()
6257 ENGINE_load_builtin_engines()
6259 That way, an application can itself choose if external engines that
6260 are built-in in OpenSSL shall ever be used or not. The benefit is
6261 that applications won't have to be linked with libdl or other dso
6262 libraries unless it's really needed.
6264 Changed 'openssl engine' to load all engines on demand.
6265 Changed the engine header files to avoid the duplication of some
6266 declarations (they differed!).
6269 *) 'openssl engine' can now list capabilities.
6272 *) Better error reporting in 'openssl engine'.
6275 *) Never call load_dh_param(NULL) in s_server.
6278 *) Add engine application. It can currently list engines by name and
6279 identity, and test if they are actually available.
6282 *) Improve RPM specification file by forcing symbolic linking and making
6283 sure the installed documentation is also owned by root.root.
6284 [Damien Miller <djm@mindrot.org>]
6286 *) Give the OpenSSL applications more possibilities to make use of
6287 keys (public as well as private) handled by engines.
6290 *) Add OCSP code that comes from CertCo.
6293 *) Add VMS support for the Rijndael code.
6296 *) Added untested support for Nuron crypto accelerator.
6299 *) Add support for external cryptographic devices. This code was
6300 previously distributed separately as the "engine" branch.
6301 [Geoff Thorpe, Richard Levitte]
6303 *) Rework the filename-translation in the DSO code. It is now possible to
6304 have far greater control over how a "name" is turned into a filename
6305 depending on the operating environment and any oddities about the
6306 different shared library filenames on each system.
6309 *) Support threads on FreeBSD-elf in Configure.
6312 *) Fix for SHA1 assembly problem with MASM: it produces
6313 warnings about corrupt line number information when assembling
6314 with debugging information. This is caused by the overlapping
6316 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
6319 NCONF_get_number() has no error checking at all. As a replacement,
6320 NCONF_get_number_e() is defined (_e for "error checking") and is
6321 promoted strongly. The old NCONF_get_number is kept around for
6322 binary backward compatibility.
6323 Make it possible for methods to load from something other than a BIO,
6324 by providing a function pointer that is given a name instead of a BIO.
6325 For example, this could be used to load configuration data from an
6329 *) Fix for non blocking accept BIOs. Added new I/O special reason
6330 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
6331 with non blocking I/O was not possible because no retry code was
6332 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
6336 *) Added the beginnings of Rijndael support.
6339 *) Fix for bug in DirectoryString mask setting. Add support for
6340 X509_NAME_print_ex() in 'req' and X509_print_ex() function
6341 to allow certificate printing to more controllable, additional
6342 'certopt' option to 'x509' to allow new printing options to be
6346 *) Clean old EAY MD5 hack from e_os.h.
6349 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
6351 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
6352 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
6353 [Joe Orton, Steve Henson]
6355 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
6357 *) Fix additional bug revealed by the NISCC test suite:
6359 Stop bug triggering large recursion when presented with
6360 certain ASN.1 tags (CVE-2003-0851)
6363 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
6365 *) Fix various bugs revealed by running the NISCC test suite:
6367 Stop out of bounds reads in the ASN1 code when presented with
6368 invalid tags (CVE-2003-0543 and CVE-2003-0544).
6370 If verify callback ignores invalid public key errors don't try to check
6371 certificate signature with the NULL public key.
6375 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
6376 if the server requested one: as stated in TLS 1.0 and SSL 3.0
6380 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
6381 extra data after the compression methods not only for TLS 1.0
6382 but also for SSL 3.0 (as required by the specification).
6383 [Bodo Moeller; problem pointed out by Matthias Loepfe]
6385 *) Change X509_certificate_type() to mark the key as exported/exportable
6386 when it's 512 *bits* long, not 512 bytes.
6389 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
6391 *) Countermeasure against the Klima-Pokorny-Rosa extension of
6392 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
6393 a protocol version number mismatch like a decryption error
6394 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
6397 *) Turn on RSA blinding by default in the default implementation
6398 to avoid a timing attack. Applications that don't want it can call
6399 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
6400 They would be ill-advised to do so in most cases.
6401 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
6403 *) Change RSA blinding code so that it works when the PRNG is not
6404 seeded (in this case, the secret RSA exponent is abused as
6405 an unpredictable seed -- if it is not unpredictable, there
6406 is no point in blinding anyway). Make RSA blinding thread-safe
6407 by remembering the creator's thread ID in rsa->blinding and
6408 having all other threads use local one-time blinding factors
6409 (this requires more computation than sharing rsa->blinding, but
6410 avoids excessive locking; and if an RSA object is not shared
6411 between threads, blinding will still be very fast).
6414 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
6416 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
6417 via timing by performing a MAC computation even if incorrrect
6418 block cipher padding has been found. This is a countermeasure
6419 against active attacks where the attacker has to distinguish
6420 between bad padding and a MAC verification error. (CVE-2003-0078)
6422 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
6423 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
6424 Martin Vuagnoux (EPFL, Ilion)]
6426 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
6428 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
6429 memory from it's contents. This is done with a counter that will
6430 place alternating values in each byte. This can be used to solve
6431 two issues: 1) the removal of calls to memset() by highly optimizing
6432 compilers, and 2) cleansing with other values than 0, since those can
6433 be read through on certain media, for example a swap space on disk.
6436 *) Bugfix: client side session caching did not work with external caching,
6437 because the session->cipher setting was not restored when reloading
6438 from the external cache. This problem was masked, when
6439 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
6440 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
6443 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
6444 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
6445 [Zeev Lieber <zeev-l@yahoo.com>]
6447 *) Undo an undocumented change introduced in 0.9.6e which caused
6448 repeated calls to OpenSSL_add_all_ciphers() and
6449 OpenSSL_add_all_digests() to be ignored, even after calling
6453 *) Change the default configuration reader to deal with last line not
6454 being properly terminated.
6457 *) Change X509_NAME_cmp() so it applies the special rules on handling
6458 DN values that are of type PrintableString, as well as RDNs of type
6459 emailAddress where the value has the type ia5String.
6460 [stefank@valicert.com via Richard Levitte]
6462 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
6463 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
6464 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
6465 the bitwise-OR of the two for use by the majority of applications
6466 wanting this behaviour, and update the docs. The documented
6467 behaviour and actual behaviour were inconsistent and had been
6468 changing anyway, so this is more a bug-fix than a behavioural
6470 [Geoff Thorpe, diagnosed by Nadav Har'El]
6472 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
6473 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
6476 *) Fix initialization code race conditions in
6477 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
6478 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
6479 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
6480 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
6481 ssl2_get_cipher_by_char(),
6482 ssl3_get_cipher_by_char().
6483 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
6485 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
6486 the cached sessions are flushed, as the remove_cb() might use ex_data
6487 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
6488 (see [openssl.org #212]).
6489 [Geoff Thorpe, Lutz Jaenicke]
6491 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
6492 length, instead of the encoding length to d2i_ASN1_OBJECT.
6495 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
6497 *) [In 0.9.6g-engine release:]
6498 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
6499 [Lynn Gazis <lgazis@rainbow.com>]
6501 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
6503 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
6504 and get fix the header length calculation.
6505 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
6506 Alon Kantor <alonk@checkpoint.com> (and others),
6509 *) Use proper error handling instead of 'assertions' in buffer
6510 overflow checks added in 0.9.6e. This prevents DoS (the
6511 assertions could call abort()).
6512 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
6514 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
6516 *) Add various sanity checks to asn1_get_length() to reject
6517 the ASN1 length bytes if they exceed sizeof(long), will appear
6518 negative or the content length exceeds the length of the
6520 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
6522 *) Fix cipher selection routines: ciphers without encryption had no flags
6523 for the cipher strength set and where therefore not handled correctly
6524 by the selection routines (PR #130).
6527 *) Fix EVP_dsa_sha macro.
6531 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
6532 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
6533 that was added in OpenSSL 0.9.6d.
6535 As the countermeasure turned out to be incompatible with some
6536 broken SSL implementations, the new option is part of SSL_OP_ALL.
6537 SSL_OP_ALL is usually employed when compatibility with weird SSL
6538 implementations is desired (e.g. '-bugs' option to 's_client' and
6539 's_server'), so the new option is automatically set in many
6543 *) Changes in security patch:
6545 Changes marked "(CHATS)" were sponsored by the Defense Advanced
6546 Research Projects Agency (DARPA) and Air Force Research Laboratory,
6547 Air Force Materiel Command, USAF, under agreement number
6550 *) Add various sanity checks to asn1_get_length() to reject
6551 the ASN1 length bytes if they exceed sizeof(long), will appear
6552 negative or the content length exceeds the length of the
6553 supplied buffer. (CVE-2002-0659)
6554 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
6556 *) Assertions for various potential buffer overflows, not known to
6558 [Ben Laurie (CHATS)]
6560 *) Various temporary buffers to hold ASCII versions of integers were
6561 too small for 64 bit platforms. (CVE-2002-0655)
6562 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
6564 *) Remote buffer overflow in SSL3 protocol - an attacker could
6565 supply an oversized session ID to a client. (CVE-2002-0656)
6566 [Ben Laurie (CHATS)]
6568 *) Remote buffer overflow in SSL2 protocol - an attacker could
6569 supply an oversized client master key. (CVE-2002-0656)
6570 [Ben Laurie (CHATS)]
6572 Changes between 0.9.6c and 0.9.6d [9 May 2002]
6574 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
6575 encoded as NULL) with id-dsa-with-sha1.
6576 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
6578 *) Check various X509_...() return values in apps/req.c.
6579 [Nils Larsch <nla@trustcenter.de>]
6581 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
6582 an end-of-file condition would erronously be flagged, when the CRLF
6583 was just at the end of a processed block. The bug was discovered when
6584 processing data through a buffering memory BIO handing the data to a
6585 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
6586 <ptsekov@syntrex.com> and Nedelcho Stanev.
6589 *) Implement a countermeasure against a vulnerability recently found
6590 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
6591 before application data chunks to avoid the use of known IVs
6592 with data potentially chosen by the attacker.
6595 *) Fix length checks in ssl3_get_client_hello().
6598 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
6599 to prevent ssl3_read_internal() from incorrectly assuming that
6600 ssl3_read_bytes() found application data while handshake
6601 processing was enabled when in fact s->s3->in_read_app_data was
6602 merely automatically cleared during the initial handshake.
6603 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
6605 *) Fix object definitions for Private and Enterprise: they were not
6606 recognized in their shortname (=lowercase) representation. Extend
6607 obj_dat.pl to issue an error when using undefined keywords instead
6608 of silently ignoring the problem (Svenning Sorensen
6609 <sss@sss.dnsalias.net>).
6612 *) Fix DH_generate_parameters() so that it works for 'non-standard'
6613 generators, i.e. generators other than 2 and 5. (Previously, the
6614 code did not properly initialise the 'add' and 'rem' values to
6615 BN_generate_prime().)
6617 In the new general case, we do not insist that 'generator' is
6618 actually a primitive root: This requirement is rather pointless;
6619 a generator of the order-q subgroup is just as good, if not
6623 *) Map new X509 verification errors to alerts. Discovered and submitted by
6624 Tom Wu <tom@arcot.com>.
6627 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
6628 returning non-zero before the data has been completely received
6629 when using non-blocking I/O.
6630 [Bodo Moeller; problem pointed out by John Hughes]
6632 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
6633 [Ben Laurie, Lutz Jaenicke]
6635 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
6636 Yoram Zahavi <YoramZ@gilian.com>).
6639 *) Add information about CygWin 1.3 and on, and preserve proper
6640 configuration for the versions before that.
6641 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
6643 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
6644 check whether we deal with a copy of a session and do not delete from
6645 the cache in this case. Problem reported by "Izhar Shoshani Levi"
6646 <izhar@checkpoint.com>.
6649 *) Do not store session data into the internal session cache, if it
6650 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
6651 flag is set). Proposed by Aslam <aslam@funk.com>.
6654 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
6658 *) [In 0.9.6d-engine release:]
6659 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
6660 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
6662 *) Add the configuration target linux-s390x.
6663 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
6665 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
6666 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
6667 variable as an indication that a ClientHello message has been
6668 received. As the flag value will be lost between multiple
6669 invocations of ssl3_accept when using non-blocking I/O, the
6670 function may not be aware that a handshake has actually taken
6671 place, thus preventing a new session from being added to the
6674 To avoid this problem, we now set s->new_session to 2 instead of
6675 using a local variable.
6676 [Lutz Jaenicke, Bodo Moeller]
6678 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
6679 if the SSL_R_LENGTH_MISMATCH error is detected.
6680 [Geoff Thorpe, Bodo Moeller]
6682 *) New 'shared_ldflag' column in Configure platform table.
6685 *) Fix EVP_CIPHER_mode macro.
6686 ["Dan S. Camper" <dan@bti.net>]
6688 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
6689 type, we must throw them away by setting rr->length to 0.
6690 [D P Chang <dpc@qualys.com>]
6692 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
6694 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
6695 <Dominikus.Scherkl@biodata.com>. (The previous implementation
6696 worked incorrectly for those cases where range = 10..._2 and
6697 3*range is two bits longer than range.)
6700 *) Only add signing time to PKCS7 structures if it is not already
6704 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
6705 OBJ_ld_ce should be OBJ_id_ce.
6706 Also some ip-pda OIDs in crypto/objects/objects.txt were
6707 incorrect (cf. RFC 3039).
6708 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
6710 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
6711 returns early because it has nothing to do.
6712 [Andy Schneider <andy.schneider@bjss.co.uk>]
6714 *) [In 0.9.6c-engine release:]
6715 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
6716 [Andy Schneider <andy.schneider@bjss.co.uk>]
6718 *) [In 0.9.6c-engine release:]
6719 Add support for Cryptographic Appliance's keyserver technology.
6720 (Use engine 'keyclient')
6721 [Cryptographic Appliances and Geoff Thorpe]
6723 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
6724 is called via tools/c89.sh because arguments have to be
6725 rearranged (all '-L' options must appear before the first object
6727 [Richard Shapiro <rshapiro@abinitio.com>]
6729 *) [In 0.9.6c-engine release:]
6730 Add support for Broadcom crypto accelerator cards, backported
6732 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
6734 *) [In 0.9.6c-engine release:]
6735 Add support for SureWare crypto accelerator cards from
6736 Baltimore Technologies. (Use engine 'sureware')
6737 [Baltimore Technologies and Mark Cox]
6739 *) [In 0.9.6c-engine release:]
6740 Add support for crypto accelerator cards from Accelerated
6741 Encryption Processing, www.aep.ie. (Use engine 'aep')
6742 [AEP Inc. and Mark Cox]
6744 *) Add a configuration entry for gcc on UnixWare.
6745 [Gary Benson <gbenson@redhat.com>]
6747 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
6748 messages are stored in a single piece (fixed-length part and
6749 variable-length part combined) and fix various bugs found on the way.
6752 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
6753 instead. BIO_gethostbyname() does not know what timeouts are
6754 appropriate, so entries would stay in cache even when they have
6756 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
6758 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
6759 faced with a pathologically small ClientHello fragment that does
6760 not contain client_version: Instead of aborting with an error,
6761 simply choose the highest available protocol version (i.e.,
6762 TLS 1.0 unless it is disabled). In practice, ClientHello
6763 messages are never sent like this, but this change gives us
6764 strictly correct behaviour at least for TLS.
6767 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
6768 never resets s->method to s->ctx->method when called from within
6769 one of the SSL handshake functions.
6770 [Bodo Moeller; problem pointed out by Niko Baric]
6772 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
6773 (sent using the client's version number) if client_version is
6774 smaller than the protocol version in use. Also change
6775 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
6776 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
6777 the client will at least see that alert.
6780 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
6784 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
6785 client receives HelloRequest while in a handshake.
6786 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
6788 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
6789 should end in 'break', not 'goto end' which circuments various
6790 cleanups done in state SSL_ST_OK. But session related stuff
6791 must be disabled for SSL_ST_OK in the case that we just sent a
6794 Also avoid some overhead by not calling ssl_init_wbio_buffer()
6795 before just sending a HelloRequest.
6796 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
6798 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
6799 reveal whether illegal block cipher padding was found or a MAC
6800 verification error occured. (Neither SSLerr() codes nor alerts
6801 are directly visible to potential attackers, but the information
6802 may leak via logfiles.)
6804 Similar changes are not required for the SSL 2.0 implementation
6805 because the number of padding bytes is sent in clear for SSL 2.0,
6806 and the extra bytes are just ignored. However ssl/s2_pkt.c
6807 failed to verify that the purported number of padding bytes is in
6811 *) Add OpenUNIX-8 support including shared libraries
6812 (Boyd Lynn Gerber <gerberb@zenez.com>).
6815 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
6816 'wristwatch attack' using huge encoding parameters (cf.
6817 James H. Manger's CRYPTO 2001 paper). Note that the
6818 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
6819 encoding parameters and hence was not vulnerable.
6822 *) BN_sqr() bug fix.
6823 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
6825 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
6826 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
6827 followed by modular reduction.
6828 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
6830 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
6831 equivalent based on BN_pseudo_rand() instead of BN_rand().
6834 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
6835 This function was broken, as the check for a new client hello message
6836 to handle SGC did not allow these large messages.
6837 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
6840 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
6843 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
6844 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
6847 *) Rework the configuration and shared library support for Tru64 Unix.
6848 The configuration part makes use of modern compiler features and
6849 still retains old compiler behavior for those that run older versions
6850 of the OS. The shared library support part includes a variant that
6851 uses the RPATH feature, and is available through the special
6852 configuration target "alpha-cc-rpath", which will never be selected
6854 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
6856 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
6857 with the same message size as in ssl3_get_certificate_request().
6858 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
6859 messages might inadvertently be reject as too long.
6860 [Petr Lampa <lampa@fee.vutbr.cz>]
6862 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
6865 *) Modified SSL library such that the verify_callback that has been set
6866 specificly for an SSL object with SSL_set_verify() is actually being
6867 used. Before the change, a verify_callback set with this function was
6868 ignored and the verify_callback() set in the SSL_CTX at the time of
6869 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
6870 to allow the necessary settings.
6873 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
6874 explicitly to NULL, as at least on Solaris 8 this seems not always to be
6875 done automatically (in contradiction to the requirements of the C
6876 standard). This made problems when used from OpenSSH.
6879 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
6880 dh->length and always used
6882 BN_rand_range(priv_key, dh->p).
6884 BN_rand_range() is not necessary for Diffie-Hellman, and this
6885 specific range makes Diffie-Hellman unnecessarily inefficient if
6886 dh->length (recommended exponent length) is much smaller than the
6887 length of dh->p. We could use BN_rand_range() if the order of
6888 the subgroup was stored in the DH structure, but we only have
6893 BN_rand(priv_key, l, ...)
6895 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
6901 RSA_eay_public_encrypt
6902 RSA_eay_private_decrypt
6903 RSA_eay_private_encrypt (signing)
6904 RSA_eay_public_decrypt (signature verification)
6906 (default implementations for RSA_public_encrypt,
6907 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
6908 always reject numbers >= n.
6911 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
6912 to synchronize access to 'locking_thread'. This is necessary on
6913 systems where access to 'locking_thread' (an 'unsigned long'
6914 variable) is not atomic.
6917 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
6918 *before* setting the 'crypto_lock_rand' flag. The previous code had
6919 a race condition if 0 is a valid thread ID.
6920 [Travis Vitek <vitek@roguewave.com>]
6922 *) Add support for shared libraries under Irix.
6923 [Albert Chin-A-Young <china@thewrittenword.com>]
6925 *) Add configuration option to build on Linux on both big-endian and
6927 [Ralf Baechle <ralf@uni-koblenz.de>]
6929 *) Add the possibility to create shared libraries on HP-UX.
6932 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
6934 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
6935 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
6936 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
6937 PRNG state recovery was possible based on the output of
6938 one PRNG request appropriately sized to gain knowledge on
6939 'md' followed by enough consecutive 1-byte PRNG requests
6940 to traverse all of 'state'.
6942 1. When updating 'md_local' (the current thread's copy of 'md')
6943 during PRNG output generation, hash all of the previous
6944 'md_local' value, not just the half used for PRNG output.
6946 2. Make the number of bytes from 'state' included into the hash
6947 independent from the number of PRNG bytes requested.
6949 The first measure alone would be sufficient to avoid
6950 Markku-Juhani's attack. (Actually it had never occurred
6951 to me that the half of 'md_local' used for chaining was the
6952 half from which PRNG output bytes were taken -- I had always
6953 assumed that the secret half would be used.) The second
6954 measure makes sure that additional data from 'state' is never
6955 mixed into 'md_local' in small portions; this heuristically
6956 further strengthens the PRNG.
6959 *) Fix crypto/bn/asm/mips3.s.
6962 *) When only the key is given to "enc", the IV is undefined. Print out
6963 an error message in this case.
6966 *) Handle special case when X509_NAME is empty in X509 printing routines.
6969 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
6970 positive and less than q.
6973 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
6974 used: it isn't thread safe and the add_lock_callback should handle
6976 [Paul Rose <Paul.Rose@bridge.com>]
6978 *) Verify that incoming data obeys the block size in
6979 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
6983 [Ulf Möller, Bodo Möller]
6985 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
6986 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
6987 when fixing the server behaviour for backwards-compatible 'client
6988 hello' messages. (Note that the attack is impractical against
6989 SSL 3.0 and TLS 1.0 anyway because length and version checking
6990 means that the probability of guessing a valid ciphertext is
6991 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
6994 Before 0.9.5, the countermeasure (hide the error by generating a
6995 random 'decryption result') did not work properly because
6996 ERR_clear_error() was missing, meaning that SSL_get_error() would
6997 detect the supposedly ignored error.
6999 Both problems are now fixed.
7002 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
7003 (previously it was 1024).
7006 *) Fix for compatibility mode trust settings: ignore trust settings
7007 unless some valid trust or reject settings are present.
7010 *) Fix for blowfish EVP: its a variable length cipher.
7013 *) Fix various bugs related to DSA S/MIME verification. Handle missing
7014 parameters in DSA public key structures and return an error in the
7015 DSA routines if parameters are absent.
7018 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
7019 in the current directory if neither $RANDFILE nor $HOME was set.
7020 RAND_file_name() in 0.9.6a returned NULL in this case. This has
7021 caused some confusion to Windows users who haven't defined $HOME.
7022 Thus RAND_file_name() is changed again: e_os.h can define a
7023 DEFAULT_HOME, which will be used if $HOME is not set.
7024 For Windows, we use "C:"; on other platforms, we still require
7025 environment variables.
7027 *) Move 'if (!initialized) RAND_poll()' into regions protected by
7028 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
7029 having multiple threads call RAND_poll() concurrently.
7032 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
7033 combination of a flag and a thread ID variable.
7034 Otherwise while one thread is in ssleay_rand_bytes (which sets the
7035 flag), *other* threads can enter ssleay_add_bytes without obeying
7036 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
7037 that they do not hold after the first thread unsets add_do_not_lock).
7040 *) Change bctest again: '-x' expressions are not available in all
7044 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
7046 *) Fix a couple of memory leaks in PKCS7_dataDecode()
7047 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
7049 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
7050 the default extension for executables, if any. Also, make the perl
7051 scripts that use symlink() to test if it really exists and use "cp"
7052 if it doesn't. All this made OpenSSL compilable and installable in
7056 *) Fix for asn1_GetSequence() for indefinite length constructed data.
7057 If SEQUENCE is length is indefinite just set c->slen to the total
7058 amount of data available.
7059 [Steve Henson, reported by shige@FreeBSD.org]
7060 [This change does not apply to 0.9.7.]
7062 *) Change bctest to avoid here-documents inside command substitution
7063 (workaround for FreeBSD /bin/sh bug).
7064 For compatibility with Ultrix, avoid shell functions (introduced
7065 in the bctest version that searches along $PATH).
7068 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
7069 with des_encrypt() defined on some operating systems, like Solaris
7073 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
7074 On the Importance of Eliminating Errors in Cryptographic
7075 Computations, J. Cryptology 14 (2001) 2, 101-119,
7076 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
7079 *) MIPS assembler BIGNUM division bug fix.
7082 *) Disabled incorrect Alpha assembler code.
7085 *) Fix PKCS#7 decode routines so they correctly update the length
7086 after reading an EOC for the EXPLICIT tag.
7088 [This change does not apply to 0.9.7.]
7090 *) Fix bug in PKCS#12 key generation routines. This was triggered
7091 if a 3DES key was generated with a 0 initial byte. Include
7092 PKCS12_BROKEN_KEYGEN compilation option to retain the old
7093 (but broken) behaviour.
7096 *) Enhance bctest to search for a working bc along $PATH and print
7098 [Tim Rice <tim@multitalents.net> via Richard Levitte]
7100 *) Fix memory leaks in err.c: free err_data string if necessary;
7101 don't write to the wrong index in ERR_set_error_data.
7104 *) Implement ssl23_peek (analogous to ssl23_read), which previously
7108 *) Replace rdtsc with _emit statements for VC++ version 5.
7109 [Jeremy Cooper <jeremy@baymoo.org>]
7111 *) Make it possible to reuse SSLv2 sessions.
7114 *) In copy_email() check for >= 0 as a return value for
7115 X509_NAME_get_index_by_NID() since 0 is a valid index.
7116 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
7118 *) Avoid coredump with unsupported or invalid public keys by checking if
7119 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
7120 PKCS7_verify() fails with non detached data.
7123 *) Don't use getenv in library functions when run as setuid/setgid.
7124 New function OPENSSL_issetugid().
7127 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
7128 due to incorrect handling of multi-threading:
7130 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
7132 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
7134 3. Count how many times MemCheck_off() has been called so that
7135 nested use can be treated correctly. This also avoids
7136 inband-signalling in the previous code (which relied on the
7137 assumption that thread ID 0 is impossible).
7140 *) Add "-rand" option also to s_client and s_server.
7143 *) Fix CPU detection on Irix 6.x.
7144 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
7145 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7147 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
7150 [This change does not apply to 0.9.7.]
7152 *) Use the cached encoding of an X509_NAME structure rather than
7153 copying it. This is apparently the reason for the libsafe "errors"
7154 but the code is actually correct.
7157 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
7158 Bleichenbacher's DSA attack.
7159 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
7160 to be set and top=0 forces the highest bit to be set; top=-1 is new
7161 and leaves the highest bit random.
7162 [Ulf Moeller, Bodo Moeller]
7164 *) In the NCONF_...-based implementations for CONF_... queries
7165 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
7166 a temporary CONF structure with the data component set to NULL
7167 (which gives segmentation faults in lh_retrieve).
7168 Instead, use NULL for the CONF pointer in CONF_get_string and
7169 CONF_get_number (which may use environment variables) and directly
7170 return NULL from CONF_get_section.
7173 *) Fix potential buffer overrun for EBCDIC.
7176 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
7177 keyUsage if basicConstraints absent for a CA.
7180 *) Make SMIME_write_PKCS7() write mail header values with a format that
7181 is more generally accepted (no spaces before the semicolon), since
7182 some programs can't parse those values properly otherwise. Also make
7183 sure BIO's that break lines after each write do not create invalid
7187 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
7188 macros previously used would not encode an empty SEQUENCE OF
7189 and break the signature.
7191 [This change does not apply to 0.9.7.]
7193 *) Zero the premaster secret after deriving the master secret in
7197 *) Add some EVP_add_digest_alias registrations (as found in
7198 OpenSSL_add_all_digests()) to SSL_library_init()
7199 aka OpenSSL_add_ssl_algorithms(). This provides improved
7200 compatibility with peers using X.509 certificates
7201 with unconventional AlgorithmIdentifier OIDs.
7204 *) Fix for Irix with NO_ASM.
7205 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7207 *) ./config script fixes.
7208 [Ulf Moeller, Richard Levitte]
7210 *) Fix 'openssl passwd -1'.
7213 *) Change PKCS12_key_gen_asc() so it can cope with non null
7214 terminated strings whose length is passed in the passlen
7215 parameter, for example from PEM callbacks. This was done
7216 by adding an extra length parameter to asc2uni().
7217 [Steve Henson, reported by <oddissey@samsung.co.kr>]
7219 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
7220 call failed, free the DSA structure.
7223 *) Fix to uni2asc() to cope with zero length Unicode strings.
7224 These are present in some PKCS#12 files.
7227 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
7228 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
7229 when writing a 32767 byte record.
7230 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
7232 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
7233 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
7235 (RSA objects have a reference count access to which is protected
7236 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
7237 so they are meant to be shared between threads.)
7238 [Bodo Moeller, Geoff Thorpe; original patch submitted by
7239 "Reddie, Steven" <Steven.Reddie@ca.com>]
7241 *) Fix a deadlock in CRYPTO_mem_leaks().
7244 *) Use better test patterns in bntest.
7247 *) rand_win.c fix for Borland C.
7250 *) BN_rshift bugfix for n == 0.
7253 *) Add a 'bctest' script that checks for some known 'bc' bugs
7254 so that 'make test' does not abort just because 'bc' is broken.
7257 *) Store verify_result within SSL_SESSION also for client side to
7258 avoid potential security hole. (Re-used sessions on the client side
7259 always resulted in verify_result==X509_V_OK, not using the original
7260 result of the server certificate verification.)
7263 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
7264 SSL3_RT_APPLICATION_DATA, return 0.
7265 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
7269 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
7270 releases, have been re-implemented by renaming the previous
7271 implementations of ssl2_read and ssl3_read to ssl2_read_internal
7272 and ssl3_read_internal, respectively, and adding 'peek' parameters
7273 to them. The new ssl[23]_{read,peek} functions are calls to
7274 ssl[23]_read_internal with the 'peek' flag set appropriately.
7275 A 'peek' parameter has also been added to ssl3_read_bytes, which
7276 does the actual work for ssl3_read_internal.
7279 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
7280 the method-specific "init()" handler. Also clean up ex_data after
7281 calling the method-specific "finish()" handler. Previously, this was
7282 happening the other way round.
7285 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
7286 The previous value, 12, was not always sufficient for BN_mod_exp().
7289 *) Make sure that shared libraries get the internal name engine with
7290 the full version number and not just 0. This should mark the
7291 shared libraries as not backward compatible. Of course, this should
7292 be changed again when we can guarantee backward binary compatibility.
7295 *) Fix typo in get_cert_by_subject() in by_dir.c
7296 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
7298 *) Rework the system to generate shared libraries:
7300 - Make note of the expected extension for the shared libraries and
7301 if there is a need for symbolic links from for example libcrypto.so.0
7302 to libcrypto.so.0.9.7. There is extended info in Configure for
7305 - Make as few rebuilds of the shared libraries as possible.
7307 - Still avoid linking the OpenSSL programs with the shared libraries.
7309 - When installing, install the shared libraries separately from the
7313 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
7315 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
7316 and not in SSL_clear because the latter is also used by the
7317 accept/connect functions; previously, the settings made by
7318 SSL_set_read_ahead would be lost during the handshake.
7319 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
7321 *) Correct util/mkdef.pl to be selective about disabled algorithms.
7322 Previously, it would create entries for disableed algorithms no
7326 *) Added several new manual pages for SSL_* function.
7329 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
7331 *) In ssl23_get_client_hello, generate an error message when faced
7332 with an initial SSL 3.0/TLS record that is too small to contain the
7333 first two bytes of the ClientHello message, i.e. client_version.
7334 (Note that this is a pathologic case that probably has never happened
7335 in real life.) The previous approach was to use the version number
7336 from the record header as a substitute; but our protocol choice
7337 should not depend on that one because it is not authenticated
7338 by the Finished messages.
7341 *) More robust randomness gathering functions for Windows.
7342 [Jeffrey Altman <jaltman@columbia.edu>]
7344 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
7345 not set then we don't setup the error code for issuer check errors
7346 to avoid possibly overwriting other errors which the callback does
7347 handle. If an application does set the flag then we assume it knows
7348 what it is doing and can handle the new informational codes
7352 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
7353 a general "ANY" type, as such it should be able to decode anything
7354 including tagged types. However it didn't check the class so it would
7355 wrongly interpret tagged types in the same way as their universal
7356 counterpart and unknown types were just rejected. Changed so that the
7357 tagged and unknown types are handled in the same way as a SEQUENCE:
7358 that is the encoding is stored intact. There is also a new type
7359 "V_ASN1_OTHER" which is used when the class is not universal, in this
7360 case we have no idea what the actual type is so we just lump them all
7364 *) On VMS, stdout may very well lead to a file that is written to
7365 in a record-oriented fashion. That means that every write() will
7366 write a separate record, which will be read separately by the
7367 programs trying to read from it. This can be very confusing.
7369 The solution is to put a BIO filter in the way that will buffer
7370 text until a linefeed is reached, and then write everything a
7371 line at a time, so every record written will be an actual line,
7372 not chunks of lines and not (usually doesn't happen, but I've
7373 seen it once) several lines in one record. BIO_f_linebuffer() is
7376 Currently, it's a VMS-only method, because that's where it has
7377 been tested well enough.
7380 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
7381 it can return incorrect results.
7382 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
7383 but it was in 0.9.6-beta[12].)
7386 *) Disable the check for content being present when verifying detached
7387 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
7388 include zero length content when signing messages.
7391 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
7392 BIO_ctrl (for BIO pairs).
7395 *) Add DSO method for VMS.
7398 *) Bug fix: Montgomery multiplication could produce results with the
7402 *) Add RPM specification openssl.spec and modify it to build three
7403 packages. The default package contains applications, application
7404 documentation and run-time libraries. The devel package contains
7405 include files, static libraries and function documentation. The
7406 doc package contains the contents of the doc directory. The original
7407 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
7410 *) Add a large number of documentation files for many SSL routines.
7411 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
7413 *) Add a configuration entry for Sony News 4.
7414 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
7416 *) Don't set the two most significant bits to one when generating a
7417 random number < q in the DSA library.
7420 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
7421 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
7422 the underlying transport is blocking) if a handshake took place.
7423 (The default behaviour is needed by applications such as s_client
7424 and s_server that use select() to determine when to use SSL_read;
7425 but for applications that know in advance when to expect data, it
7426 just makes things more complicated.)
7429 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
7433 *) Add a few more EBCDIC conditionals that make `req' and `x509'
7434 work better on such systems.
7435 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
7437 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
7438 Update PKCS12_parse() so it copies the friendlyName and the
7439 keyid to the certificates aux info.
7442 *) Fix bug in PKCS7_verify() which caused an infinite loop
7443 if there was more than one signature.
7444 [Sven Uszpelkat <su@celocom.de>]
7446 *) Major change in util/mkdef.pl to include extra information
7447 about each symbol, as well as presentig variables as well
7448 as functions. This change means that there's n more need
7449 to rebuild the .num files when some algorithms are excluded.
7452 *) Allow the verify time to be set by an application,
7453 rather than always using the current time.
7456 *) Phase 2 verify code reorganisation. The certificate
7457 verify code now looks up an issuer certificate by a
7458 number of criteria: subject name, authority key id
7459 and key usage. It also verifies self signed certificates
7460 by the same criteria. The main comparison function is
7461 X509_check_issued() which performs these checks.
7463 Lot of changes were necessary in order to support this
7464 without completely rewriting the lookup code.
7466 Authority and subject key identifier are now cached.
7468 The LHASH 'certs' is X509_STORE has now been replaced
7469 by a STACK_OF(X509_OBJECT). This is mainly because an
7470 LHASH can't store or retrieve multiple objects with
7471 the same hash value.
7473 As a result various functions (which were all internal
7474 use only) have changed to handle the new X509_STORE
7475 structure. This will break anything that messed round
7476 with X509_STORE internally.
7478 The functions X509_STORE_add_cert() now checks for an
7479 exact match, rather than just subject name.
7481 The X509_STORE API doesn't directly support the retrieval
7482 of multiple certificates matching a given criteria, however
7483 this can be worked round by performing a lookup first
7484 (which will fill the cache with candidate certificates)
7485 and then examining the cache for matches. This is probably
7486 the best we can do without throwing out X509_LOOKUP
7487 entirely (maybe later...).
7489 The X509_VERIFY_CTX structure has been enhanced considerably.
7491 All certificate lookup operations now go via a get_issuer()
7492 callback. Although this currently uses an X509_STORE it
7493 can be replaced by custom lookups. This is a simple way
7494 to bypass the X509_STORE hackery necessary to make this
7495 work and makes it possible to use more efficient techniques
7496 in future. A very simple version which uses a simple
7497 STACK for its trusted certificate store is also provided
7498 using X509_STORE_CTX_trusted_stack().
7500 The verify_cb() and verify() callbacks now have equivalents
7501 in the X509_STORE_CTX structure.
7503 X509_STORE_CTX also has a 'flags' field which can be used
7504 to customise the verify behaviour.
7507 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
7508 excludes S/MIME capabilities.
7511 *) When a certificate request is read in keep a copy of the
7512 original encoding of the signed data and use it when outputing
7513 again. Signatures then use the original encoding rather than
7514 a decoded, encoded version which may cause problems if the
7515 request is improperly encoded.
7518 *) For consistency with other BIO_puts implementations, call
7519 buffer_write(b, ...) directly in buffer_puts instead of calling
7522 In BIO_puts, increment b->num_write as in BIO_write.
7523 [Peter.Sylvester@EdelWeb.fr]
7525 *) Fix BN_mul_word for the case where the word is 0. (We have to use
7526 BN_zero, we may not return a BIGNUM with an array consisting of
7530 *) Avoid calling abort() from within the library when problems are
7531 detected, except if preprocessor symbols have been defined
7532 (such as REF_CHECK, BN_DEBUG etc.).
7535 *) New openssl application 'rsautl'. This utility can be
7536 used for low level RSA operations. DER public key
7537 BIO/fp routines also added.
7540 *) New Configure entry and patches for compiling on QNX 4.
7541 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
7543 *) A demo state-machine implementation was sponsored by
7544 Nuron (http://www.nuron.com/) and is now available in
7545 demos/state_machine.
7548 *) New options added to the 'dgst' utility for signature
7549 generation and verification.
7552 *) Unrecognized PKCS#7 content types are now handled via a
7553 catch all ASN1_TYPE structure. This allows unsupported
7554 types to be stored as a "blob" and an application can
7555 encode and decode it manually.
7558 *) Fix various signed/unsigned issues to make a_strex.c
7560 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
7562 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
7563 length if passed a buffer. ASN1_INTEGER_to_BN failed
7564 if passed a NULL BN and its argument was negative.
7565 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
7567 *) Modification to PKCS#7 encoding routines to output definite
7568 length encoding. Since currently the whole structures are in
7569 memory there's not real point in using indefinite length
7570 constructed encoding. However if OpenSSL is compiled with
7571 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
7574 *) Added BIO_vprintf() and BIO_vsnprintf().
7577 *) Added more prefixes to parse for in the the strings written
7578 through a logging bio, to cover all the levels that are available
7579 through syslog. The prefixes are now:
7581 PANIC, EMERG, EMR => LOG_EMERG
7582 ALERT, ALR => LOG_ALERT
7583 CRIT, CRI => LOG_CRIT
7584 ERROR, ERR => LOG_ERR
7585 WARNING, WARN, WAR => LOG_WARNING
7586 NOTICE, NOTE, NOT => LOG_NOTICE
7587 INFO, INF => LOG_INFO
7588 DEBUG, DBG => LOG_DEBUG
7590 and as before, if none of those prefixes are present at the
7591 beginning of the string, LOG_ERR is chosen.
7593 On Win32, the LOG_* levels are mapped according to this:
7595 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
7596 LOG_WARNING => EVENTLOG_WARNING_TYPE
7597 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
7601 *) Made it possible to reconfigure with just the configuration
7602 argument "reconf" or "reconfigure". The command line arguments
7603 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
7604 and are retrieved from there when reconfiguring.
7608 [Assar Westerlund <assar@sics.se>, Richard Levitte]
7610 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
7613 *) The obj_dat.pl script was messing up the sorting of object
7614 names. The reason was that it compared the quoted version
7615 of strings as a result "OCSP" > "OCSP Signing" because
7616 " > SPACE. Changed script to store unquoted versions of
7617 names and add quotes on output. It was also omitting some
7618 names from the lookup table if they were given a default
7619 value (that is if SN is missing it is given the same
7620 value as LN and vice versa), these are now added on the
7621 grounds that if an object has a name we should be able to
7622 look it up. Finally added warning output when duplicate
7623 short or long names are found.
7626 *) Changes needed for Tandem NSK.
7627 [Scott Uroff <scott@xypro.com>]
7629 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
7630 RSA_padding_check_SSLv23(), special padding was never detected
7631 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
7632 version rollback attacks was not effective.
7634 In s23_clnt.c, don't use special rollback-attack detection padding
7635 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
7636 client; similarly, in s23_srvr.c, don't do the rollback check if
7637 SSL 2.0 is the only protocol enabled in the server.
7640 *) Make it possible to get hexdumps of unprintable data with 'openssl
7641 asn1parse'. By implication, the functions ASN1_parse_dump() and
7642 BIO_dump_indent() are added.
7645 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
7646 these print out strings and name structures based on various
7647 flags including RFC2253 support and proper handling of
7648 multibyte characters. Added options to the 'x509' utility
7649 to allow the various flags to be set.
7652 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
7653 Also change the functions X509_cmp_current_time() and
7654 X509_gmtime_adj() work with an ASN1_TIME structure,
7655 this will enable certificates using GeneralizedTime in validity
7656 dates to be checked.
7659 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
7660 negative public key encodings) on by default,
7661 NO_NEG_PUBKEY_BUG can be set to disable it.
7664 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
7665 content octets. An i2c_ASN1_OBJECT is unnecessary because
7666 the encoding can be trivially obtained from the structure.
7669 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
7670 not read locks (CRYPTO_r_[un]lock).
7673 *) A first attempt at creating official support for shared
7674 libraries through configuration. I've kept it so the
7675 default is static libraries only, and the OpenSSL programs
7676 are always statically linked for now, but there are
7677 preparations for dynamic linking in place.
7678 This has been tested on Linux and Tru64.
7681 *) Randomness polling function for Win9x, as described in:
7682 Peter Gutmann, Software Generation of Practically Strong
7686 *) Fix so PRNG is seeded in req if using an already existing
7690 *) New options to smime application. -inform and -outform
7691 allow alternative formats for the S/MIME message including
7692 PEM and DER. The -content option allows the content to be
7693 specified separately. This should allow things like Netscape
7694 form signing output easier to verify.
7697 *) Fix the ASN1 encoding of tags using the 'long form'.
7700 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
7701 STRING types. These convert content octets to and from the
7702 underlying type. The actual tag and length octets are
7703 already assumed to have been read in and checked. These
7704 are needed because all other string types have virtually
7705 identical handling apart from the tag. By having versions
7706 of the ASN1 functions that just operate on content octets
7707 IMPLICIT tagging can be handled properly. It also allows
7708 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
7709 and ASN1_INTEGER are identical apart from the tag.
7712 *) Change the handling of OID objects as follows:
7714 - New object identifiers are inserted in objects.txt, following
7715 the syntax given in objects.README.
7716 - objects.pl is used to process obj_mac.num and create a new
7718 - obj_dat.pl is used to create a new obj_dat.h, using the data in
7721 This is currently kind of a hack, and the perl code in objects.pl
7722 isn't very elegant, but it works as I intended. The simplest way
7723 to check that it worked correctly is to look in obj_dat.h and
7724 check the array nid_objs and make sure the objects haven't moved
7725 around (this is important!). Additions are OK, as well as
7726 consistent name changes.
7729 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
7732 *) Addition of the command line parameter '-rand file' to 'openssl req'.
7733 The given file adds to whatever has already been seeded into the
7734 random pool through the RANDFILE configuration file option or
7735 environment variable, or the default random state file.
7738 *) mkstack.pl now sorts each macro group into lexical order.
7739 Previously the output order depended on the order the files
7740 appeared in the directory, resulting in needless rewriting
7744 *) Patches to make OpenSSL compile under Win32 again. Mostly
7745 work arounds for the VC++ problem that it treats func() as
7746 func(void). Also stripped out the parts of mkdef.pl that
7747 added extra typesafe functions: these no longer exist.
7750 *) Reorganisation of the stack code. The macros are now all
7751 collected in safestack.h . Each macro is defined in terms of
7752 a "stack macro" of the form SKM_<name>(type, a, b). The
7753 DEBUG_SAFESTACK is now handled in terms of function casts,
7754 this has the advantage of retaining type safety without the
7755 use of additional functions. If DEBUG_SAFESTACK is not defined
7756 then the non typesafe macros are used instead. Also modified the
7757 mkstack.pl script to handle the new form. Needs testing to see
7758 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
7759 the default if no major problems. Similar behaviour for ASN1_SET_OF
7760 and PKCS12_STACK_OF.
7763 *) When some versions of IIS use the 'NET' form of private key the
7764 key derivation algorithm is different. Normally MD5(password) is
7765 used as a 128 bit RC4 key. In the modified case
7766 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
7767 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
7768 as the old Netscape_RSA functions except they have an additional
7769 'sgckey' parameter which uses the modified algorithm. Also added
7770 an -sgckey command line option to the rsa utility. Thanks to
7771 Adrian Peck <bertie@ncipher.com> for posting details of the modified
7772 algorithm to openssl-dev.
7775 *) The evp_local.h macros were using 'c.##kname' which resulted in
7776 invalid expansion on some systems (SCO 5.0.5 for example).
7777 Corrected to 'c.kname'.
7778 [Phillip Porch <root@theporch.com>]
7780 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
7781 a STACK of email addresses from a certificate or request, these look
7782 in the subject name and the subject alternative name extensions and
7783 omit any duplicate addresses.
7786 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
7787 This makes DSA verification about 2 % faster.
7790 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
7791 (meaning that now 2^5 values will be precomputed, which is only 4 KB
7792 plus overhead for 1024 bit moduli).
7793 This makes exponentiations about 0.5 % faster for 1024 bit
7794 exponents (as measured by "openssl speed rsa2048").
7797 *) Rename memory handling macros to avoid conflicts with other
7799 Malloc => OPENSSL_malloc
7800 Malloc_locked => OPENSSL_malloc_locked
7801 Realloc => OPENSSL_realloc
7802 Free => OPENSSL_free
7805 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
7806 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
7809 *) CygWin32 support.
7810 [John Jarvie <jjarvie@newsguy.com>]
7812 *) The type-safe stack code has been rejigged. It is now only compiled
7813 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
7814 by default all type-specific stack functions are "#define"d back to
7815 standard stack functions. This results in more streamlined output
7816 but retains the type-safety checking possibilities of the original
7820 *) The STACK code has been cleaned up, and certain type declarations
7821 that didn't make a lot of sense have been brought in line. This has
7822 also involved a cleanup of sorts in safestack.h to more correctly
7823 map type-safe stack functions onto their plain stack counterparts.
7824 This work has also resulted in a variety of "const"ifications of
7825 lots of the code, especially "_cmp" operations which should normally
7826 be prototyped with "const" parameters anyway.
7829 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
7830 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
7831 (The PRNG state consists of two parts, the large pool 'state' and 'md',
7832 where all of 'md' is used each time the PRNG is used, but 'state'
7833 is used only indexed by a cyclic counter. As entropy may not be
7834 well distributed from the beginning, 'md' is important as a
7835 chaining variable. However, the output function chains only half
7836 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
7837 all of 'md', and seeding with STATE_SIZE dummy bytes will result
7838 in all of 'state' being rewritten, with the new values depending
7839 on virtually all of 'md'. This overcomes the 80 bit limitation.)
7842 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
7843 the handshake is continued after ssl_verify_cert_chain();
7844 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
7845 can lead to 'unexplainable' connection aborts later.
7846 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
7848 *) Major EVP API cipher revision.
7849 Add hooks for extra EVP features. This allows various cipher
7850 parameters to be set in the EVP interface. Support added for variable
7851 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
7852 setting of RC2 and RC5 parameters.
7854 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
7857 Remove lots of duplicated code from the EVP library. For example *every*
7858 cipher init() function handles the 'iv' in the same way according to the
7859 cipher mode. They also all do nothing if the 'key' parameter is NULL and
7860 for CFB and OFB modes they zero ctx->num.
7862 New functionality allows removal of S/MIME code RC2 hack.
7864 Most of the routines have the same form and so can be declared in terms
7867 By shifting this to the top level EVP_CipherInit() it can be removed from
7868 all individual ciphers. If the cipher wants to handle IVs or keys
7869 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
7872 Change lots of functions like EVP_EncryptUpdate() to now return a
7873 value: although software versions of the algorithms cannot fail
7874 any installed hardware versions can.
7877 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
7878 this option is set, tolerate broken clients that send the negotiated
7879 protocol version number instead of the requested protocol version
7883 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
7884 i.e. non-zero for export ciphersuites, zero otherwise.
7885 Previous versions had this flag inverted, inconsistent with
7886 rsa_tmp_cb (..._TMP_RSA_CB).
7887 [Bodo Moeller; problem reported by Amit Chopra]
7889 *) Add missing DSA library text string. Work around for some IIS
7890 key files with invalid SEQUENCE encoding.
7893 *) Add a document (doc/standards.txt) that list all kinds of standards
7894 and so on that are implemented in OpenSSL.
7897 *) Enhance c_rehash script. Old version would mishandle certificates
7898 with the same subject name hash and wouldn't handle CRLs at all.
7899 Added -fingerprint option to crl utility, to support new c_rehash
7903 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
7906 *) Fix for SSL server purpose checking. Server checking was
7907 rejecting certificates which had extended key usage present
7908 but no ssl client purpose.
7909 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
7911 *) Make PKCS#12 code work with no password. The PKCS#12 spec
7912 is a little unclear about how a blank password is handled.
7913 Since the password in encoded as a BMPString with terminating
7914 double NULL a zero length password would end up as just the
7915 double NULL. However no password at all is different and is
7916 handled differently in the PKCS#12 key generation code. NS
7917 treats a blank password as zero length. MSIE treats it as no
7918 password on export: but it will try both on import. We now do
7919 the same: PKCS12_parse() tries zero length and no password if
7920 the password is set to "" or NULL (NULL is now a valid password:
7921 it wasn't before) as does the pkcs12 application.
7924 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
7925 perror when PEM_read_bio_X509_REQ fails, the error message must
7926 be obtained from the error queue.
7929 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
7930 it in ERR_remove_state if appropriate, and change ERR_get_state
7931 accordingly to avoid race conditions (this is necessary because
7932 thread_hash is no longer constant once set).
7935 *) Bugfix for linux-elf makefile.one.
7938 *) RSA_get_default_method() will now cause a default
7939 RSA_METHOD to be chosen if one doesn't exist already.
7940 Previously this was only set during a call to RSA_new()
7941 or RSA_new_method(NULL) meaning it was possible for
7942 RSA_get_default_method() to return NULL.
7945 *) Added native name translation to the existing DSO code
7946 that will convert (if the flag to do so is set) filenames
7947 that are sufficiently small and have no path information
7948 into a canonical native form. Eg. "blah" converted to
7949 "libblah.so" or "blah.dll" etc.
7952 *) New function ERR_error_string_n(e, buf, len) which is like
7953 ERR_error_string(e, buf), but writes at most 'len' bytes
7954 including the 0 terminator. For ERR_error_string_n, 'buf'
7956 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
7958 *) CONF library reworked to become more general. A new CONF
7959 configuration file reader "class" is implemented as well as a
7960 new functions (NCONF_*, for "New CONF") to handle it. The now
7961 old CONF_* functions are still there, but are reimplemented to
7962 work in terms of the new functions. Also, a set of functions
7963 to handle the internal storage of the configuration data is
7964 provided to make it easier to write new configuration file
7965 reader "classes" (I can definitely see something reading a
7966 configuration file in XML format, for example), called _CONF_*,
7967 or "the configuration storage API"...
7969 The new configuration file reading functions are:
7971 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
7972 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
7974 NCONF_default, NCONF_WIN32
7976 NCONF_dump_fp, NCONF_dump_bio
7978 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
7979 NCONF_new creates a new CONF object. This works in the same way
7980 as other interfaces in OpenSSL, like the BIO interface.
7981 NCONF_dump_* dump the internal storage of the configuration file,
7982 which is useful for debugging. All other functions take the same
7983 arguments as the old CONF_* functions wth the exception of the
7984 first that must be a `CONF *' instead of a `LHASH *'.
7986 To make it easer to use the new classes with the old CONF_* functions,
7987 the function CONF_set_default_method is provided.
7990 *) Add '-tls1' option to 'openssl ciphers', which was already
7991 mentioned in the documentation but had not been implemented.
7992 (This option is not yet really useful because even the additional
7993 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
7996 *) Initial DSO code added into libcrypto for letting OpenSSL (and
7997 OpenSSL-based applications) load shared libraries and bind to
7998 them in a portable way.
7999 [Geoff Thorpe, with contributions from Richard Levitte]
8001 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
8003 *) Make sure _lrotl and _lrotr are only used with MSVC.
8005 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
8006 (the default implementation of RAND_status).
8008 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
8009 to '-clrext' (= clear extensions), as intended and documented.
8010 [Bodo Moeller; inconsistency pointed out by Michael Attili
8013 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
8014 was larger than the MD block size.
8015 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
8017 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
8018 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
8019 using the passed key: if the passed key was a private key the result
8020 of X509_print(), for example, would be to print out all the private key
8024 *) des_quad_cksum() byte order bug fix.
8025 [Ulf Möller, using the problem description in krb4-0.9.7, where
8026 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
8028 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
8030 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
8032 *) For easily testing in shell scripts whether some command
8033 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
8034 returns with exit code 0 iff no command of the given name is available.
8035 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
8036 the output goes to stdout and nothing is printed to stderr.
8037 Additional arguments are always ignored.
8039 Since for each cipher there is a command of the same name,
8040 the 'no-cipher' compilation switches can be tested this way.
8042 ('openssl no-XXX' is not able to detect pseudo-commands such
8043 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
8046 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
8049 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
8050 is set; it will be thrown away anyway because each handshake creates
8052 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
8053 to parameters -- in previous versions (since OpenSSL 0.9.3) the
8054 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
8055 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
8058 *) New s_client option -ign_eof: EOF at stdin is ignored, and
8059 'Q' and 'R' lose their special meanings (quit/renegotiate).
8060 This is part of what -quiet does; unlike -quiet, -ign_eof
8061 does not suppress any output.
8064 *) Add compatibility options to the purpose and trust code. The
8065 purpose X509_PURPOSE_ANY is "any purpose" which automatically
8066 accepts a certificate or CA, this was the previous behaviour,
8067 with all the associated security issues.
8069 X509_TRUST_COMPAT is the old trust behaviour: only and
8070 automatically trust self signed roots in certificate store. A
8071 new trust setting X509_TRUST_DEFAULT is used to specify that
8072 a purpose has no associated trust setting and it should instead
8073 use the value in the default purpose.
8076 *) Fix the PKCS#8 DSA private key code so it decodes keys again
8077 and fix a memory leak.
8080 *) In util/mkerr.pl (which implements 'make errors'), preserve
8081 reason strings from the previous version of the .c file, as
8082 the default to have only downcase letters (and digits) in
8083 automatically generated reasons codes is not always appropriate.
8086 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
8087 using strerror. Previously, ERR_reason_error_string() returned
8088 library names as reason strings for SYSerr; but SYSerr is a special
8089 case where small numbers are errno values, not library numbers.
8092 *) Add '-dsaparam' option to 'openssl dhparam' application. This
8093 converts DSA parameters into DH parameters. (When creating parameters,
8094 DSA_generate_parameters is used.)
8097 *) Include 'length' (recommended exponent length) in C code generated
8098 by 'openssl dhparam -C'.
8101 *) The second argument to set_label in perlasm was already being used
8102 so couldn't be used as a "file scope" flag. Moved to third argument
8106 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
8107 instead of RAND_bytes for encryption IVs and salts.
8110 *) Include RAND_status() into RAND_METHOD instead of implementing
8111 it only for md_rand.c Otherwise replacing the PRNG by calling
8112 RAND_set_rand_method would be impossible.
8115 *) Don't let DSA_generate_key() enter an infinite loop if the random
8116 number generation fails.
8119 *) New 'rand' application for creating pseudo-random output.
8122 *) Added configuration support for Linux/IA64
8123 [Rolf Haberrecker <rolf@suse.de>]
8125 *) Assembler module support for Mingw32.
8128 *) Shared library support for HPUX (in shlib/).
8129 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
8131 *) Shared library support for Solaris gcc.
8132 [Lutz Behnke <behnke@trustcenter.de>]
8134 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
8136 *) PKCS7_encrypt() was adding text MIME headers twice because they
8137 were added manually and by SMIME_crlf_copy().
8140 *) In bntest.c don't call BN_rand with zero bits argument.
8141 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
8143 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
8144 case was implemented. This caused BN_div_recp() to fail occasionally.
8147 *) Add an optional second argument to the set_label() in the perl
8148 assembly language builder. If this argument exists and is set
8149 to 1 it signals that the assembler should use a symbol whose
8150 scope is the entire file, not just the current function. This
8151 is needed with MASM which uses the format label:: for this scope.
8152 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
8154 *) Change the ASN1 types so they are typedefs by default. Before
8155 almost all types were #define'd to ASN1_STRING which was causing
8156 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
8160 *) Change names of new functions to the new get1/get0 naming
8161 convention: After 'get1', the caller owns a reference count
8162 and has to call ..._free; 'get0' returns a pointer to some
8163 data structure without incrementing reference counters.
8164 (Some of the existing 'get' functions increment a reference
8165 counter, some don't.)
8166 Similarly, 'set1' and 'add1' functions increase reference
8167 counters or duplicate objects.
8170 *) Allow for the possibility of temp RSA key generation failure:
8171 the code used to assume it always worked and crashed on failure.
8174 *) Fix potential buffer overrun problem in BIO_printf().
8175 [Ulf Möller, using public domain code by Patrick Powell; problem
8176 pointed out by David Sacerdote <das33@cornell.edu>]
8178 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
8179 RAND_egd() and RAND_status(). In the command line application,
8180 the EGD socket can be specified like a seed file using RANDFILE
8184 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
8185 Some CAs (e.g. Verisign) distribute certificates in this form.
8188 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
8189 list to exclude them. This means that no special compilation option
8190 is needed to use anonymous DH: it just needs to be included in the
8194 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
8195 EVP_MD_type. The old functionality is available in a new macro called
8196 EVP_MD_md(). Change code that uses it and update docs.
8199 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
8200 where the 'void *' argument is replaced by a function pointer argument.
8201 Previously 'void *' was abused to point to functions, which works on
8202 many platforms, but is not correct. As these functions are usually
8203 called by macros defined in OpenSSL header files, most source code
8204 should work without changes.
8207 *) <openssl/opensslconf.h> (which is created by Configure) now contains
8208 sections with information on -D... compiler switches used for
8209 compiling the library so that applications can see them. To enable
8210 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
8211 must be defined. E.g.,
8212 #define OPENSSL_ALGORITHM_DEFINES
8213 #include <openssl/opensslconf.h>
8214 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
8215 [Richard Levitte, Ulf and Bodo Möller]
8217 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
8221 *) Change the 'other' type in certificate aux info to a STACK_OF
8222 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
8223 the required ASN1 format: arbitrary types determined by an OID.
8226 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
8227 argument to 'req'. This is not because the function is newer or
8228 better than others it just uses the work 'NEW' in the certificate
8229 request header lines. Some software needs this.
8232 *) Reorganise password command line arguments: now passwords can be
8233 obtained from various sources. Delete the PEM_cb function and make
8234 it the default behaviour: i.e. if the callback is NULL and the
8235 usrdata argument is not NULL interpret it as a null terminated pass
8236 phrase. If usrdata and the callback are NULL then the pass phrase
8237 is prompted for as usual.
8240 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
8241 the support is automatically enabled. The resulting binaries will
8242 autodetect the card and use it if present.
8243 [Ben Laurie and Compaq Inc.]
8245 *) Work around for Netscape hang bug. This sends certificate request
8246 and server done in one record. Since this is perfectly legal in the
8247 SSL/TLS protocol it isn't a "bug" option and is on by default. See
8248 the bugs/SSLv3 entry for more info.
8251 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
8254 *) Add -rand argument to smime and pkcs12 applications and read/write
8258 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
8261 *) Add command line password options to the remaining applications.
8264 *) Bug fix for BN_div_recp() for numerators with an even number of
8268 *) More tests in bntest.c, and changed test_bn output.
8271 *) ./config recognizes MacOS X now.
8274 *) Bug fix for BN_div() when the first words of num and divsor are
8275 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
8278 *) Add support for various broken PKCS#8 formats, and command line
8279 options to produce them.
8282 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
8283 get temporary BIGNUMs from a BN_CTX.
8286 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
8290 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
8291 include a #define from the old name to the new. The original intent
8292 was that statically linked binaries could for example just call
8293 SSLeay_add_all_ciphers() to just add ciphers to the table and not
8294 link with digests. This never worked becayse SSLeay_add_all_digests()
8295 and SSLeay_add_all_ciphers() were in the same source file so calling
8296 one would link with the other. They are now in separate source files.
8299 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
8302 *) Use a less unusual form of the Miller-Rabin primality test (it used
8303 a binary algorithm for exponentiation integrated into the Miller-Rabin
8304 loop, our standard modexp algorithms are faster).
8307 *) Support for the EBCDIC character set completed.
8308 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
8310 *) Source code cleanups: use const where appropriate, eliminate casts,
8311 use void * instead of char * in lhash.
8314 *) Bugfix: ssl3_send_server_key_exchange was not restartable
8315 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
8316 this the server could overwrite ephemeral keys that the client
8320 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
8321 using 50 iterations of the Rabin-Miller test.
8323 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
8324 iterations of the Rabin-Miller test as required by the appendix
8325 to FIPS PUB 186[-1]) instead of DSA_is_prime.
8326 As BN_is_prime_fasttest includes trial division, DSA parameter
8327 generation becomes much faster.
8329 This implies a change for the callback functions in DSA_is_prime
8330 and DSA_generate_parameters: The callback function is called once
8331 for each positive witness in the Rabin-Miller test, not just
8332 occasionally in the inner loop; and the parameters to the
8333 callback function now provide an iteration count for the outer
8334 loop rather than for the current invocation of the inner loop.
8335 DSA_generate_parameters additionally can call the callback
8336 function with an 'iteration count' of -1, meaning that a
8337 candidate has passed the trial division test (when q is generated
8338 from an application-provided seed, trial division is skipped).
8341 *) New function BN_is_prime_fasttest that optionally does trial
8342 division before starting the Rabin-Miller test and has
8343 an additional BN_CTX * argument (whereas BN_is_prime always
8344 has to allocate at least one BN_CTX).
8345 'callback(1, -1, cb_arg)' is called when a number has passed the
8346 trial division stage.
8349 *) Fix for bug in CRL encoding. The validity dates weren't being handled
8353 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
8356 *) New function BN_pseudo_rand().
8359 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
8360 bignum version of BN_from_montgomery() with the working code from
8361 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
8365 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
8366 made it impossible to use the same SSL_SESSION data structure in
8367 SSL2 clients in multiple threads.
8370 *) The return value of RAND_load_file() no longer counts bytes obtained
8371 by stat(). RAND_load_file(..., -1) is new and uses the complete file
8372 to seed the PRNG (previously an explicit byte count was required).
8373 [Ulf Möller, Bodo Möller]
8375 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
8376 used (char *) instead of (void *) and had casts all over the place.
8379 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
8382 *) Retain source code compatibility for BN_prime_checks macro:
8383 BN_is_prime(..., BN_prime_checks, ...) now uses
8384 BN_prime_checks_for_size to determine the appropriate number of
8385 Rabin-Miller iterations.
8388 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
8389 DH_CHECK_P_NOT_SAFE_PRIME.
8390 (Check if this is true? OpenPGP calls them "strong".)
8393 *) Merge the functionality of "dh" and "gendh" programs into a new program
8394 "dhparam". The old programs are retained for now but will handle DH keys
8395 (instead of parameters) in future.
8398 *) Make the ciphers, s_server and s_client programs check the return values
8399 when a new cipher list is set.
8402 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
8403 ciphers. Before when the 56bit ciphers were enabled the sorting was
8406 The syntax for the cipher sorting has been extended to support sorting by
8407 cipher-strength (using the strength_bits hard coded in the tables).
8408 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
8410 Fix a bug in the cipher-command parser: when supplying a cipher command
8411 string with an "undefined" symbol (neither command nor alphanumeric
8412 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
8413 an error is flagged.
8415 Due to the strength-sorting extension, the code of the
8416 ssl_create_cipher_list() function was completely rearranged. I hope that
8417 the readability was also increased :-)
8418 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
8420 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
8421 for the first serial number and places 2 in the serial number file. This
8422 avoids problems when the root CA is created with serial number zero and
8423 the first user certificate has the same issuer name and serial number
8427 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
8428 the new code. Add documentation for this stuff.
8431 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
8432 X509_*() to X509at_*() on the grounds that they don't handle X509
8433 structures and behave in an analagous way to the X509v3 functions:
8434 they shouldn't be called directly but wrapper functions should be used
8437 So we also now have some wrapper functions that call the X509at functions
8438 when passed certificate requests. (TO DO: similar things can be done with
8439 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
8440 things. Some of these need some d2i or i2d and print functionality
8441 because they handle more complex structures.)
8444 *) Add missing #ifndefs that caused missing symbols when building libssl
8445 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
8446 NO_RSA in ssl/s2*.c.
8447 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
8449 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
8450 has a return value which indicates the quality of the random data
8451 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
8452 error queue. New function RAND_pseudo_bytes() generates output that is
8453 guaranteed to be unique but not unpredictable. RAND_add is like
8454 RAND_seed, but takes an extra argument for an entropy estimate
8455 (RAND_seed always assumes full entropy).
8458 *) Do more iterations of Rabin-Miller probable prime test (specifically,
8459 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
8460 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
8461 in crypto/bn/bn_prime.c for the complete table). This guarantees a
8462 false-positive rate of at most 2^-80 for random input.
8465 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
8468 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
8469 in the 0.9.5 release), this returns the chain
8470 from an X509_CTX structure with a dup of the stack and all
8471 the X509 reference counts upped: so the stack will exist
8472 after X509_CTX_cleanup() has been called. Modify pkcs12.c
8475 Also make SSL_SESSION_print() print out the verify return
8479 *) Add manpage for the pkcs12 command. Also change the default
8480 behaviour so MAC iteration counts are used unless the new
8481 -nomaciter option is used. This improves file security and
8482 only older versions of MSIE (4.0 for example) need it.
8485 *) Honor the no-xxx Configure options when creating .DEF files.
8488 *) Add PKCS#10 attributes to field table: challengePassword,
8489 unstructuredName and unstructuredAddress. These are taken from
8490 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
8491 international characters are used.
8493 More changes to X509_ATTRIBUTE code: allow the setting of types
8494 based on strings. Remove the 'loc' parameter when adding
8495 attributes because these will be a SET OF encoding which is sorted
8499 *) Initial changes to the 'req' utility to allow request generation
8500 automation. This will allow an application to just generate a template
8501 file containing all the field values and have req construct the
8504 Initial support for X509_ATTRIBUTE handling. Stacks of these are
8505 used all over the place including certificate requests and PKCS#7
8506 structures. They are currently handled manually where necessary with
8507 some primitive wrappers for PKCS#7. The new functions behave in a
8508 manner analogous to the X509 extension functions: they allow
8509 attributes to be looked up by NID and added.
8511 Later something similar to the X509V3 code would be desirable to
8512 automatically handle the encoding, decoding and printing of the
8513 more complex types. The string types like challengePassword can
8514 be handled by the string table functions.
8516 Also modified the multi byte string table handling. Now there is
8517 a 'global mask' which masks out certain types. The table itself
8518 can use the flag STABLE_NO_MASK to ignore the mask setting: this
8519 is useful when for example there is only one permissible type
8520 (as in countryName) and using the mask might result in no valid
8524 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
8525 SSL_get_peer_finished to allow applications to obtain the latest
8526 Finished messages sent to the peer or expected from the peer,
8527 respectively. (SSL_get_peer_finished is usually the Finished message
8528 actually received from the peer, otherwise the protocol will be aborted.)
8530 As the Finished message are message digests of the complete handshake
8531 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
8532 be used for external authentication procedures when the authentication
8533 provided by SSL/TLS is not desired or is not enough.
8536 *) Enhanced support for Alpha Linux is added. Now ./config checks if
8537 the host supports BWX extension and if Compaq C is present on the
8538 $PATH. Just exploiting of the BWX extension results in 20-30%
8539 performance kick for some algorithms, e.g. DES and RC4 to mention
8540 a couple. Compaq C in turn generates ~20% faster code for MD5 and
8544 *) Add support for MS "fast SGC". This is arguably a violation of the
8545 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
8546 weak crypto and after checking the certificate is SGC a second one
8547 with strong crypto. MS SGC stops the first handshake after receiving
8548 the server certificate message and sends a second client hello. Since
8549 a server will typically do all the time consuming operations before
8550 expecting any further messages from the client (server key exchange
8551 is the most expensive) there is little difference between the two.
8553 To get OpenSSL to support MS SGC we have to permit a second client
8554 hello message after we have sent server done. In addition we have to
8555 reset the MAC if we do get this second client hello.
8558 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
8559 if a DER encoded private key is RSA or DSA traditional format. Changed
8560 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
8561 format DER encoded private key. Newer code should use PKCS#8 format which
8562 has the key type encoded in the ASN1 structure. Added DER private key
8563 support to pkcs8 application.
8566 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
8567 ciphersuites has been selected (as required by the SSL 3/TLS 1
8568 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
8569 is set, we interpret this as a request to violate the specification
8570 (the worst that can happen is a handshake failure, and 'correct'
8571 behaviour would result in a handshake failure anyway).
8574 *) In SSL_CTX_add_session, take into account that there might be multiple
8575 SSL_SESSION structures with the same session ID (e.g. when two threads
8576 concurrently obtain them from an external cache).
8577 The internal cache can handle only one SSL_SESSION with a given ID,
8578 so if there's a conflict, we now throw out the old one to achieve
8582 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
8583 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
8584 some routines that use cipher OIDs: some ciphers do not have OIDs
8585 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
8589 *) Simplify the trust setting structure and code. Now we just have
8590 two sequences of OIDs for trusted and rejected settings. These will
8591 typically have values the same as the extended key usage extension
8592 and any application specific purposes.
8594 The trust checking code now has a default behaviour: it will just
8595 check for an object with the same NID as the passed id. Functions can
8596 be provided to override either the default behaviour or the behaviour
8597 for a given id. SSL client, server and email already have functions
8598 in place for compatibility: they check the NID and also return "trusted"
8599 if the certificate is self signed.
8602 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
8603 traditional format into an EVP_PKEY structure.
8606 *) Add a password callback function PEM_cb() which either prompts for
8607 a password if usr_data is NULL or otherwise assumes it is a null
8608 terminated password. Allow passwords to be passed on command line
8609 environment or config files in a few more utilities.
8612 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
8613 keys. Add some short names for PKCS#8 PBE algorithms and allow them
8614 to be specified on the command line for the pkcs8 and pkcs12 utilities.
8615 Update documentation.
8618 *) Support for ASN1 "NULL" type. This could be handled before by using
8619 ASN1_TYPE but there wasn't any function that would try to read a NULL
8620 and produce an error if it couldn't. For compatibility we also have
8621 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
8622 don't allocate anything because they don't need to.
8625 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
8627 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
8629 *) Rebuild of the memory allocation routines used by OpenSSL code and
8630 possibly others as well. The purpose is to make an interface that
8631 provide hooks so anyone can build a separate set of allocation and
8632 deallocation routines to be used by OpenSSL, for example memory
8633 pool implementations, or something else, which was previously hard
8634 since Malloc(), Realloc() and Free() were defined as macros having
8635 the values malloc, realloc and free, respectively (except for Win32
8636 compilations). The same is provided for memory debugging code.
8637 OpenSSL already comes with functionality to find memory leaks, but
8638 this gives people a chance to debug other memory problems.
8640 With these changes, a new set of functions and macros have appeared:
8642 CRYPTO_set_mem_debug_functions() [F]
8643 CRYPTO_get_mem_debug_functions() [F]
8644 CRYPTO_dbg_set_options() [F]
8645 CRYPTO_dbg_get_options() [F]
8646 CRYPTO_malloc_debug_init() [M]
8648 The memory debug functions are NULL by default, unless the library
8649 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
8650 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
8651 gives the standard debugging functions that come with OpenSSL) or
8652 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
8653 provided by the library user) must be used. When the standard
8654 debugging functions are used, CRYPTO_dbg_set_options can be used to
8655 request additional information:
8656 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
8657 the CRYPTO_MDEBUG_xxx macro when compiling the library.
8659 Also, things like CRYPTO_set_mem_functions will always give the
8660 expected result (the new set of functions is used for allocation
8661 and deallocation) at all times, regardless of platform and compiler
8664 To finish it up, some functions that were never use in any other
8665 way than through macros have a new API and new semantic:
8668 CRYPTO_dbg_realloc()
8671 All macros of value have retained their old syntax.
8672 [Richard Levitte and Bodo Moeller]
8674 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
8675 ordering of SMIMECapabilities wasn't in "strength order" and there
8676 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
8680 *) Some ASN1 types with illegal zero length encoding (INTEGER,
8681 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
8682 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
8684 *) Merge in my S/MIME library for OpenSSL. This provides a simple
8685 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
8686 functionality to handle multipart/signed properly) and a utility
8687 called 'smime' to call all this stuff. This is based on code I
8688 originally wrote for Celo who have kindly allowed it to be
8689 included in OpenSSL.
8692 *) Add variants des_set_key_checked and des_set_key_unchecked of
8693 des_set_key (aka des_key_sched). Global variable des_check_key
8694 decides which of these is called by des_set_key; this way
8695 des_check_key behaves as it always did, but applications and
8696 the library itself, which was buggy for des_check_key == 1,
8697 have a cleaner way to pick the version they need.
8700 *) New function PKCS12_newpass() which changes the password of a
8704 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
8705 dynamic mix. In both cases the ids can be used as an index into the
8706 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
8707 functions so they accept a list of the field values and the
8708 application doesn't need to directly manipulate the X509_TRUST
8712 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
8716 *) Modify the way the V3 extension code looks up extensions. This now
8717 works in a similar way to the object code: we have some "standard"
8718 extensions in a static table which is searched with OBJ_bsearch()
8719 and the application can add dynamic ones if needed. The file
8720 crypto/x509v3/ext_dat.h now has the info: this file needs to be
8721 updated whenever a new extension is added to the core code and kept
8722 in ext_nid order. There is a simple program 'tabtest.c' which checks
8723 this. New extensions are not added too often so this file can readily
8724 be maintained manually.
8726 There are two big advantages in doing things this way. The extensions
8727 can be looked up immediately and no longer need to be "added" using
8728 X509V3_add_standard_extensions(): this function now does nothing.
8729 [Side note: I get *lots* of email saying the extension code doesn't
8730 work because people forget to call this function]
8731 Also no dynamic allocation is done unless new extensions are added:
8732 so if we don't add custom extensions there is no need to call
8733 X509V3_EXT_cleanup().
8736 *) Modify enc utility's salting as follows: make salting the default. Add a
8737 magic header, so unsalted files fail gracefully instead of just decrypting
8738 to garbage. This is because not salting is a big security hole, so people
8739 should be discouraged from doing it.
8742 *) Fixes and enhancements to the 'x509' utility. It allowed a message
8743 digest to be passed on the command line but it only used this
8744 parameter when signing a certificate. Modified so all relevant
8745 operations are affected by the digest parameter including the
8746 -fingerprint and -x509toreq options. Also -x509toreq choked if a
8747 DSA key was used because it didn't fix the digest.
8750 *) Initial certificate chain verify code. Currently tests the untrusted
8751 certificates for consistency with the verify purpose (which is set
8752 when the X509_STORE_CTX structure is set up) and checks the pathlength.
8754 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
8755 this is because it will reject chains with invalid extensions whereas
8756 every previous version of OpenSSL and SSLeay made no checks at all.
8758 Trust code: checks the root CA for the relevant trust settings. Trust
8759 settings have an initial value consistent with the verify purpose: e.g.
8760 if the verify purpose is for SSL client use it expects the CA to be
8761 trusted for SSL client use. However the default value can be changed to
8762 permit custom trust settings: one example of this would be to only trust
8763 certificates from a specific "secure" set of CAs.
8765 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
8766 which should be used for version portability: especially since the
8767 verify structure is likely to change more often now.
8769 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
8770 to set them. If not set then assume SSL clients will verify SSL servers
8773 Two new options to the verify program: -untrusted allows a set of
8774 untrusted certificates to be passed in and -purpose which sets the
8775 intended purpose of the certificate. If a purpose is set then the
8776 new chain verify code is used to check extension consistency.
8779 *) Support for the authority information access extension.
8782 *) Modify RSA and DSA PEM read routines to transparently handle
8783 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
8784 public keys in a format compatible with certificate
8785 SubjectPublicKeyInfo structures. Unfortunately there were already
8786 functions called *_PublicKey_* which used various odd formats so
8787 these are retained for compatibility: however the DSA variants were
8788 never in a public release so they have been deleted. Changed dsa/rsa
8789 utilities to handle the new format: note no releases ever handled public
8790 keys so we should be OK.
8792 The primary motivation for this change is to avoid the same fiasco
8793 that dogs private keys: there are several incompatible private key
8794 formats some of which are standard and some OpenSSL specific and
8795 require various evil hacks to allow partial transparent handling and
8796 even then it doesn't work with DER formats. Given the option anything
8797 other than PKCS#8 should be dumped: but the other formats have to
8798 stay in the name of compatibility.
8800 With public keys and the benefit of hindsight one standard format
8801 is used which works with EVP_PKEY, RSA or DSA structures: though
8802 it clearly returns an error if you try to read the wrong kind of key.
8804 Added a -pubkey option to the 'x509' utility to output the public key.
8805 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
8806 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
8807 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
8808 that do the same as the EVP_PKEY_assign_*() except they up the
8809 reference count of the added key (they don't "swallow" the
8813 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
8814 CRLs would fail if the file contained no certificates or no CRLs:
8815 added a new function to read in both types and return the number
8816 read: this means that if none are read it will be an error. The
8817 DER versions of the certificate and CRL reader would always fail
8818 because it isn't possible to mix certificates and CRLs in DER format
8819 without choking one or the other routine. Changed this to just read
8820 a certificate: this is the best we can do. Also modified the code
8821 in apps/verify.c to take notice of return codes: it was previously
8822 attempting to read in certificates from NULL pointers and ignoring
8823 any errors: this is one reason why the cert and CRL reader seemed
8824 to work. It doesn't check return codes from the default certificate
8825 routines: these may well fail if the certificates aren't installed.
8828 *) Code to support otherName option in GeneralName.
8831 *) First update to verify code. Change the verify utility
8832 so it warns if it is passed a self signed certificate:
8833 for consistency with the normal behaviour. X509_verify
8834 has been modified to it will now verify a self signed
8835 certificate if *exactly* the same certificate appears
8836 in the store: it was previously impossible to trust a
8837 single self signed certificate. This means that:
8838 openssl verify ss.pem
8839 now gives a warning about a self signed certificate but
8840 openssl verify -CAfile ss.pem ss.pem
8844 *) For servers, store verify_result in SSL_SESSION data structure
8845 (and add it to external session representation).
8846 This is needed when client certificate verifications fails,
8847 but an application-provided verification callback (set by
8848 SSL_CTX_set_cert_verify_callback) allows accepting the session
8849 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
8850 but returns 1): When the session is reused, we have to set
8851 ssl->verify_result to the appropriate error code to avoid
8853 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
8855 *) Fix a bug in the new PKCS#7 code: it didn't consider the
8856 case in PKCS7_dataInit() where the signed PKCS7 structure
8857 didn't contain any existing data because it was being created.
8858 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
8860 *) Add a salt to the key derivation routines in enc.c. This
8861 forms the first 8 bytes of the encrypted file. Also add a
8862 -S option to allow a salt to be input on the command line.
8865 *) New function X509_cmp(). Oddly enough there wasn't a function
8866 to compare two certificates. We do this by working out the SHA1
8867 hash and comparing that. X509_cmp() will be needed by the trust
8871 *) SSL_get1_session() is like SSL_get_session(), but increments
8872 the reference count in the SSL_SESSION returned.
8873 [Geoff Thorpe <geoff@eu.c2.net>]
8875 *) Fix for 'req': it was adding a null to request attributes.
8876 Also change the X509_LOOKUP and X509_INFO code to handle
8877 certificate auxiliary information.
8880 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
8884 *) Add the possibility to add extra information to the memory leak
8885 detecting output, to form tracebacks, showing from where each
8886 allocation was originated: CRYPTO_push_info("constant string") adds
8887 the string plus current file name and line number to a per-thread
8888 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
8889 is like calling CYRPTO_pop_info() until the stack is empty.
8890 Also updated memory leak detection code to be multi-thread-safe.
8893 *) Add options -text and -noout to pkcs7 utility and delete the
8894 encryption options which never did anything. Update docs.
8897 *) Add options to some of the utilities to allow the pass phrase
8898 to be included on either the command line (not recommended on
8899 OSes like Unix) or read from the environment. Update the
8900 manpages and fix a few bugs.
8903 *) Add a few manpages for some of the openssl commands.
8906 *) Fix the -revoke option in ca. It was freeing up memory twice,
8907 leaking and not finding already revoked certificates.
8910 *) Extensive changes to support certificate auxiliary information.
8911 This involves the use of X509_CERT_AUX structure and X509_AUX
8912 functions. An X509_AUX function such as PEM_read_X509_AUX()
8913 can still read in a certificate file in the usual way but it
8914 will also read in any additional "auxiliary information". By
8915 doing things this way a fair degree of compatibility can be
8916 retained: existing certificates can have this information added
8917 using the new 'x509' options.
8919 Current auxiliary information includes an "alias" and some trust
8920 settings. The trust settings will ultimately be used in enhanced
8921 certificate chain verification routines: currently a certificate
8922 can only be trusted if it is self signed and then it is trusted
8926 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
8927 The problem was that one of the replacement routines had not been working
8928 since SSLeay releases. For now the offending routine has been replaced
8929 with non-optimised assembler. Even so, this now gives around 95%
8930 performance improvement for 1024 bit RSA signs.
8933 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
8934 handling. Most clients have the effective key size in bits equal to
8935 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
8936 A few however don't do this and instead use the size of the decrypted key
8937 to determine the RC2 key length and the AlgorithmIdentifier to determine
8938 the effective key length. In this case the effective key length can still
8939 be 40 bits but the key length can be 168 bits for example. This is fixed
8940 by manually forcing an RC2 key into the EVP_PKEY structure because the
8941 EVP code can't currently handle unusual RC2 key sizes: it always assumes
8942 the key length and effective key length are equal.
8945 *) Add a bunch of functions that should simplify the creation of
8946 X509_NAME structures. Now you should be able to do:
8947 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
8948 and have it automatically work out the correct field type and fill in
8949 the structures. The more adventurous can try:
8950 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
8951 and it will (hopefully) work out the correct multibyte encoding.
8954 *) Change the 'req' utility to use the new field handling and multibyte
8955 copy routines. Before the DN field creation was handled in an ad hoc
8956 way in req, ca, and x509 which was rather broken and didn't support
8957 BMPStrings or UTF8Strings. Since some software doesn't implement
8958 BMPStrings or UTF8Strings yet, they can be enabled using the config file
8959 using the dirstring_type option. See the new comment in the default
8960 openssl.cnf for more info.
8963 *) Make crypto/rand/md_rand.c more robust:
8964 - Assure unique random numbers after fork().
8965 - Make sure that concurrent threads access the global counter and
8966 md serializably so that we never lose entropy in them
8967 or use exactly the same state in multiple threads.
8968 Access to the large state is not always serializable because
8969 the additional locking could be a performance killer, and
8970 md should be large enough anyway.
8973 *) New file apps/app_rand.c with commonly needed functionality
8974 for handling the random seed file.
8976 Use the random seed file in some applications that previously did not:
8978 dsaparam -genkey (which also ignored its '-rand' option),
8981 x509 (when signing).
8982 Except on systems with /dev/urandom, it is crucial to have a random
8983 seed file at least for key creation, DSA signing, and for DH exchanges;
8984 for RSA signatures we could do without one.
8986 gendh and gendsa (unlike genrsa) used to read only the first byte
8987 of each file listed in the '-rand' option. The function as previously
8988 found in genrsa is now in app_rand.c and is used by all programs
8989 that support '-rand'.
8992 *) In RAND_write_file, use mode 0600 for creating files;
8993 don't just chmod when it may be too late.
8996 *) Report an error from X509_STORE_load_locations
8997 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
9000 *) New function ASN1_mbstring_copy() this copies a string in either
9001 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
9002 into an ASN1_STRING type. A mask of permissible types is passed
9003 and it chooses the "minimal" type to use or an error if not type
9007 *) Add function equivalents to the various macros in asn1.h. The old
9008 macros are retained with an M_ prefix. Code inside the library can
9009 use the M_ macros. External code (including the openssl utility)
9010 should *NOT* in order to be "shared library friendly".
9013 *) Add various functions that can check a certificate's extensions
9014 to see if it usable for various purposes such as SSL client,
9015 server or S/MIME and CAs of these types. This is currently
9016 VERY EXPERIMENTAL but will ultimately be used for certificate chain
9017 verification. Also added a -purpose flag to x509 utility to
9018 print out all the purposes.
9021 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
9025 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
9026 for, obtain and decode and extension and obtain its critical flag.
9027 This allows all the necessary extension code to be handled in a
9028 single function call.
9031 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
9032 platforms. See crypto/rc4/rc4_enc.c for further details.
9035 *) New -noout option to asn1parse. This causes no output to be produced
9036 its main use is when combined with -strparse and -out to extract data
9037 from a file (which may not be in ASN.1 format).
9040 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
9041 when producing the local key id.
9042 [Richard Levitte <levitte@stacken.kth.se>]
9044 *) New option -dhparam in s_server. This allows a DH parameter file to be
9045 stated explicitly. If it is not stated then it tries the first server
9046 certificate file. The previous behaviour hard coded the filename
9050 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
9051 a public key to be input or output. For example:
9052 openssl rsa -in key.pem -pubout -out pubkey.pem
9053 Also added necessary DSA public key functions to handle this.
9056 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
9057 in the message. This was handled by allowing
9058 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
9059 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
9061 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
9062 to the end of the strings whereas this didn't. This would cause problems
9063 if strings read with d2i_ASN1_bytes() were later modified.
9064 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
9066 *) Fix for base64 decode bug. When a base64 bio reads only one line of
9067 data and it contains EOF it will end up returning an error. This is
9068 caused by input 46 bytes long. The cause is due to the way base64
9069 BIOs find the start of base64 encoded data. They do this by trying a
9070 trial decode on each line until they find one that works. When they
9071 do a flag is set and it starts again knowing it can pass all the
9072 data directly through the decoder. Unfortunately it doesn't reset
9073 the context it uses. This means that if EOF is reached an attempt
9074 is made to pass two EOFs through the context and this causes the
9075 resulting error. This can also cause other problems as well. As is
9076 usual with these problems it takes *ages* to find and the fix is
9077 trivial: move one line.
9078 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
9080 *) Ugly workaround to get s_client and s_server working under Windows. The
9081 old code wouldn't work because it needed to select() on sockets and the
9082 tty (for keypresses and to see if data could be written). Win32 only
9083 supports select() on sockets so we select() with a 1s timeout on the
9084 sockets and then see if any characters are waiting to be read, if none
9085 are present then we retry, we also assume we can always write data to
9086 the tty. This isn't nice because the code then blocks until we've
9087 received a complete line of data and it is effectively polling the
9088 keyboard at 1s intervals: however it's quite a bit better than not
9089 working at all :-) A dedicated Windows application might handle this
9090 with an event loop for example.
9093 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
9094 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
9095 will be called when RSA_sign() and RSA_verify() are used. This is useful
9096 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
9097 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
9098 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
9099 This necessitated the support of an extra signature type NID_md5_sha1
9100 for SSL signatures and modifications to the SSL library to use it instead
9101 of calling RSA_public_decrypt() and RSA_private_encrypt().
9104 *) Add new -verify -CAfile and -CApath options to the crl program, these
9105 will lookup a CRL issuers certificate and verify the signature in a
9106 similar way to the verify program. Tidy up the crl program so it
9107 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
9108 less strict. It will now permit CRL extensions even if it is not
9109 a V2 CRL: this will allow it to tolerate some broken CRLs.
9112 *) Initialize all non-automatic variables each time one of the openssl
9113 sub-programs is started (this is necessary as they may be started
9114 multiple times from the "OpenSSL>" prompt).
9115 [Lennart Bang, Bodo Moeller]
9117 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
9118 removing all other RSA functionality (this is what NO_RSA does). This
9119 is so (for example) those in the US can disable those operations covered
9120 by the RSA patent while allowing storage and parsing of RSA keys and RSA
9124 *) Non-copying interface to BIO pairs.
9125 (still largely untested)
9128 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
9129 ASCII string. This was handled independently in various places before.
9132 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
9133 UTF8 strings a character at a time.
9136 *) Use client_version from client hello to select the protocol
9137 (s23_srvr.c) and for RSA client key exchange verification
9138 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
9141 *) Add various utility functions to handle SPKACs, these were previously
9142 handled by poking round in the structure internals. Added new function
9143 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
9144 print, verify and generate SPKACs. Based on an original idea from
9145 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
9148 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
9151 *) Allow the config file extension section to be overwritten on the
9152 command line. Based on an original idea from Massimiliano Pala
9153 <madwolf@comune.modena.it>. The new option is called -extensions
9154 and can be applied to ca, req and x509. Also -reqexts to override
9155 the request extensions in req and -crlexts to override the crl extensions
9159 *) Add new feature to the SPKAC handling in ca. Now you can include
9160 the same field multiple times by preceding it by "XXXX." for example:
9163 this is the same syntax as used in the req config file.
9166 *) Allow certificate extensions to be added to certificate requests. These
9167 are specified in a 'req_extensions' option of the req section of the
9168 config file. They can be printed out with the -text option to req but
9169 are otherwise ignored at present.
9172 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
9173 data read consists of only the final block it would not decrypted because
9174 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
9175 A misplaced 'break' also meant the decrypted final block might not be
9176 copied until the next read.
9179 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
9180 a few extra parameters to the DH structure: these will be useful if
9181 for example we want the value of 'q' or implement X9.42 DH.
9184 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
9185 provides hooks that allow the default DSA functions or functions on a
9186 "per key" basis to be replaced. This allows hardware acceleration and
9187 hardware key storage to be handled without major modification to the
9188 library. Also added low level modexp hooks and CRYPTO_EX structure and
9189 associated functions.
9192 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
9193 as "read only": it can't be written to and the buffer it points to will
9194 not be freed. Reading from a read only BIO is much more efficient than
9195 a normal memory BIO. This was added because there are several times when
9196 an area of memory needs to be read from a BIO. The previous method was
9197 to create a memory BIO and write the data to it, this results in two
9198 copies of the data and an O(n^2) reading algorithm. There is a new
9199 function BIO_new_mem_buf() which creates a read only memory BIO from
9200 an area of memory. Also modified the PKCS#7 routines to use read only
9204 *) Bugfix: ssl23_get_client_hello did not work properly when called in
9205 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
9206 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
9207 but a retry condition occured while trying to read the rest.
9210 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
9211 NID_pkcs7_encrypted by default: this was wrong since this should almost
9212 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
9213 the encrypted data type: this is a more sensible place to put it and it
9214 allows the PKCS#12 code to be tidied up that duplicated this
9218 *) Changed obj_dat.pl script so it takes its input and output files on
9219 the command line. This should avoid shell escape redirection problems
9223 *) Initial support for certificate extension requests, these are included
9224 in things like Xenroll certificate requests. Included functions to allow
9225 extensions to be obtained and added.
9228 *) -crlf option to s_client and s_server for sending newlines as
9229 CRLF (as required by many protocols).
9232 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
9234 *) Install libRSAglue.a when OpenSSL is built with RSAref.
9235 [Ralf S. Engelschall]
9237 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
9238 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
9240 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
9244 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
9245 DH parameters/keys (q is lost during that conversion, but the resulting
9246 DH parameters contain its length).
9248 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
9249 much faster than DH_generate_parameters (which creates parameters
9250 where p = 2*q + 1), and also the smaller q makes DH computations
9251 much more efficient (160-bit exponentiation instead of 1024-bit
9252 exponentiation); so this provides a convenient way to support DHE
9253 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
9254 utter importance to use
9255 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9257 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9258 when such DH parameters are used, because otherwise small subgroup
9259 attacks may become possible!
9262 *) Avoid memory leak in i2d_DHparams.
9265 *) Allow the -k option to be used more than once in the enc program:
9266 this allows the same encrypted message to be read by multiple recipients.
9269 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
9270 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
9271 it will always use the numerical form of the OID, even if it has a short
9275 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
9276 method only got called if p,q,dmp1,dmq1,iqmp components were present,
9277 otherwise bn_mod_exp was called. In the case of hardware keys for example
9278 no private key components need be present and it might store extra data
9279 in the RSA structure, which cannot be accessed from bn_mod_exp.
9280 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
9281 private key operations.
9284 *) Added support for SPARC Linux.
9287 *) pem_password_cb function type incompatibly changed from
9288 typedef int pem_password_cb(char *buf, int size, int rwflag);
9290 ....(char *buf, int size, int rwflag, void *userdata);
9291 so that applications can pass data to their callbacks:
9292 The PEM[_ASN1]_{read,write}... functions and macros now take an
9293 additional void * argument, which is just handed through whenever
9294 the password callback is called.
9295 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
9297 New function SSL_CTX_set_default_passwd_cb_userdata.
9299 Compatibility note: As many C implementations push function arguments
9300 onto the stack in reverse order, the new library version is likely to
9301 interoperate with programs that have been compiled with the old
9302 pem_password_cb definition (PEM_whatever takes some data that
9303 happens to be on the stack as its last argument, and the callback
9304 just ignores this garbage); but there is no guarantee whatsoever that
9307 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
9308 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
9309 problems not only on Windows, but also on some Unix platforms.
9310 To avoid problematic command lines, these definitions are now in an
9311 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
9312 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
9315 *) MIPS III/IV assembler module is reimplemented.
9318 *) More DES library cleanups: remove references to srand/rand and
9319 delete an unused file.
9322 *) Add support for the the free Netwide assembler (NASM) under Win32,
9323 since not many people have MASM (ml) and it can be hard to obtain.
9324 This is currently experimental but it seems to work OK and pass all
9325 the tests. Check out INSTALL.W32 for info.
9328 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
9329 without temporary keys kept an extra copy of the server key,
9330 and connections with temporary keys did not free everything in case
9334 *) New function RSA_check_key and new openssl rsa option -check
9335 for verifying the consistency of RSA keys.
9336 [Ulf Moeller, Bodo Moeller]
9338 *) Various changes to make Win32 compile work:
9339 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
9340 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
9341 comparison" warnings.
9342 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
9345 *) Add a debugging option to PKCS#5 v2 key generation function: when
9346 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
9347 derived keys are printed to stderr.
9350 *) Copy the flags in ASN1_STRING_dup().
9351 [Roman E. Pavlov <pre@mo.msk.ru>]
9353 *) The x509 application mishandled signing requests containing DSA
9354 keys when the signing key was also DSA and the parameters didn't match.
9356 It was supposed to omit the parameters when they matched the signing key:
9357 the verifying software was then supposed to automatically use the CA's
9358 parameters if they were absent from the end user certificate.
9360 Omitting parameters is no longer recommended. The test was also
9361 the wrong way round! This was probably due to unusual behaviour in
9362 EVP_cmp_parameters() which returns 1 if the parameters match.
9363 This meant that parameters were omitted when they *didn't* match and
9364 the certificate was useless. Certificates signed with 'ca' didn't have
9366 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
9368 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
9369 The interface is as follows:
9370 Applications can use
9371 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
9372 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
9373 "off" is now the default.
9374 The library internally uses
9375 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
9376 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
9377 to disable memory-checking temporarily.
9379 Some inconsistent states that previously were possible (and were
9380 even the default) are now avoided.
9382 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
9383 with each memory chunk allocated; this is occasionally more helpful
9384 than just having a counter.
9386 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
9388 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
9392 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
9393 which largely parallels "options", but is for changing API behaviour,
9394 whereas "options" are about protocol behaviour.
9395 Initial "mode" flags are:
9397 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
9398 a single record has been written.
9399 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
9400 retries use the same buffer location.
9401 (But all of the contents must be
9405 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
9408 *) Fix problems with no-hmac etc.
9409 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
9411 *) New functions RSA_get_default_method(), RSA_set_method() and
9412 RSA_get_method(). These allows replacement of RSA_METHODs without having
9413 to mess around with the internals of an RSA structure.
9416 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
9417 Also really enable memory leak checks in openssl.c and in some
9419 [Chad C. Mulligan, Bodo Moeller]
9421 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
9422 up the length of negative integers. This has now been simplified to just
9423 store the length when it is first determined and use it later, rather
9424 than trying to keep track of where data is copied and updating it to
9426 [Steve Henson, reported by Brien Wheeler
9427 <bwheeler@authentica-security.com>]
9429 *) Add a new function PKCS7_signatureVerify. This allows the verification
9430 of a PKCS#7 signature but with the signing certificate passed to the
9431 function itself. This contrasts with PKCS7_dataVerify which assumes the
9432 certificate is present in the PKCS#7 structure. This isn't always the
9433 case: certificates can be omitted from a PKCS#7 structure and be
9434 distributed by "out of band" means (such as a certificate database).
9437 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
9438 function prototypes in pem.h, also change util/mkdef.pl to add the
9439 necessary function names.
9442 *) mk1mf.pl (used by Windows builds) did not properly read the
9443 options set by Configure in the top level Makefile, and Configure
9444 was not even able to write more than one option correctly.
9445 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
9448 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
9449 file to be loaded from a BIO or FILE pointer. The BIO version will
9450 for example allow memory BIOs to contain config info.
9453 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
9454 Whoever hopes to achieve shared-library compatibility across versions
9455 must use this, not the compile-time macro.
9456 (Exercise 0.9.4: Which is the minimum library version required by
9458 Note: All this applies only to multi-threaded programs, others don't
9462 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
9463 through a BIO pair triggered the default case, i.e.
9464 SSLerr(...,SSL_R_UNKNOWN_STATE).
9467 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
9468 can use the SSL library even if none of the specific BIOs is
9472 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
9473 for the encoded length.
9474 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
9476 *) Add initial documentation of the X509V3 functions.
9479 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
9480 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
9481 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
9482 secure PKCS#8 private key format with a high iteration count.
9485 *) Fix determination of Perl interpreter: A perl or perl5
9486 _directory_ in $PATH was also accepted as the interpreter.
9487 [Ralf S. Engelschall]
9489 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
9490 wrong with it but it was very old and did things like calling
9491 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
9495 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
9496 to use the new extension code.
9499 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
9500 with macros. This should make it easier to change their form, add extra
9501 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
9505 *) Add to configuration table a new entry that can specify an alternative
9506 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
9507 according to Mark Crispin <MRC@Panda.COM>.
9511 *) DES CBC did not update the IV. Weird.
9514 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
9515 Changing the behaviour of the former might break existing programs --
9516 where IV updating is needed, des_ncbc_encrypt can be used.
9519 *) When bntest is run from "make test" it drives bc to check its
9520 calculations, as well as internally checking them. If an internal check
9521 fails, it needs to cause bc to give a non-zero result or make test carries
9522 on without noticing the failure. Fixed.
9525 *) DES library cleanups.
9528 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
9529 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
9530 ciphers. NOTE: although the key derivation function has been verified
9531 against some published test vectors it has not been extensively tested
9532 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
9536 *) Instead of "mkdir -p", which is not fully portable, use new
9537 Perl script "util/mkdir-p.pl".
9540 *) Rewrite the way password based encryption (PBE) is handled. It used to
9541 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
9542 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
9543 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
9544 the 'parameter' field of the AlgorithmIdentifier is passed to the
9545 underlying key generation function so it must do its own ASN1 parsing.
9546 This has also changed the EVP_PBE_CipherInit() function which now has a
9547 'parameter' argument instead of literal salt and iteration count values
9548 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
9551 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
9552 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
9553 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
9554 KEY" because this clashed with PKCS#8 unencrypted string. Since this
9555 value was just used as a "magic string" and not used directly its
9556 value doesn't matter.
9559 *) Introduce some semblance of const correctness to BN. Shame C doesn't
9563 *) "linux-sparc64" configuration (ultrapenguin).
9564 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
9565 "linux-sparc" configuration.
9566 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
9568 *) config now generates no-xxx options for missing ciphers.
9571 *) Support the EBCDIC character set (work in progress).
9572 File ebcdic.c not yet included because it has a different license.
9573 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
9575 *) Support BS2000/OSD-POSIX.
9576 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
9578 *) Make callbacks for key generation use void * instead of char *.
9581 *) Make S/MIME samples compile (not yet tested).
9584 *) Additional typesafe stacks.
9587 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
9591 Changes between 0.9.3 and 0.9.3a [29 May 1999]
9593 *) New configuration variant "sco5-gcc".
9595 *) Updated some demos.
9596 [Sean O Riordain, Wade Scholine]
9598 *) Add missing BIO_free at exit of pkcs12 application.
9601 *) Fix memory leak in conf.c.
9604 *) Updates for Win32 to assembler version of MD5.
9607 *) Set #! path to perl in apps/der_chop to where we found it
9608 instead of using a fixed path.
9611 *) SHA library changes for irix64-mips4-cc.
9614 *) Improvements for VMS support.
9618 Changes between 0.9.2b and 0.9.3 [24 May 1999]
9620 *) Bignum library bug fix. IRIX 6 passes "make test" now!
9621 This also avoids the problems with SC4.2 and unpatched SC5.
9622 [Andy Polyakov <appro@fy.chalmers.se>]
9624 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
9625 These are required because of the typesafe stack would otherwise break
9626 existing code. If old code used a structure member which used to be STACK
9627 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
9628 sk_num or sk_value it would produce an error because the num, data members
9629 are not present in STACK_OF. Now it just produces a warning. sk_set
9630 replaces the old method of assigning a value to sk_value
9631 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
9632 that does this will no longer work (and should use sk_set instead) but
9633 this could be regarded as a "questionable" behaviour anyway.
9636 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
9637 correctly handle encrypted S/MIME data.
9640 *) Change type of various DES function arguments from des_cblock
9641 (which means, in function argument declarations, pointer to char)
9642 to des_cblock * (meaning pointer to array with 8 char elements),
9643 which allows the compiler to do more typechecking; it was like
9644 that back in SSLeay, but with lots of ugly casts.
9646 Introduce new type const_des_cblock.
9649 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
9650 problems: find RecipientInfo structure that matches recipient certificate
9651 and initialise the ASN1 structures properly based on passed cipher.
9654 *) Belatedly make the BN tests actually check the results.
9657 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
9658 to and from BNs: it was completely broken. New compilation option
9659 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
9660 key elements as negative integers.
9663 *) Reorganize and speed up MD5.
9664 [Andy Polyakov <appro@fy.chalmers.se>]
9667 [Richard Levitte <richard@levitte.org>]
9669 *) New option -out to asn1parse to allow the parsed structure to be
9670 output to a file. This is most useful when combined with the -strparse
9671 option to examine the output of things like OCTET STRINGS.
9674 *) Make SSL library a little more fool-proof by not requiring any longer
9675 that SSL_set_{accept,connect}_state be called before
9676 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
9677 in many applications because usually everything *appeared* to work as
9678 intended anyway -- now it really works as intended).
9681 *) Move openssl.cnf out of lib/.
9684 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
9685 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
9686 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
9687 [Ralf S. Engelschall]
9689 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
9690 handle PKCS#7 enveloped data properly.
9691 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
9693 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
9694 copying pointers. The cert_st handling is changed by this in
9695 various ways (and thus what used to be known as ctx->default_cert
9696 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
9697 any longer when s->cert does not give us what we need).
9698 ssl_cert_instantiate becomes obsolete by this change.
9699 As soon as we've got the new code right (possibly it already is?),
9700 we have solved a couple of bugs of the earlier code where s->cert
9701 was used as if it could not have been shared with other SSL structures.
9703 Note that using the SSL API in certain dirty ways now will result
9704 in different behaviour than observed with earlier library versions:
9705 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
9706 does not influence s as it used to.
9708 In order to clean up things more thoroughly, inside SSL_SESSION
9709 we don't use CERT any longer, but a new structure SESS_CERT
9710 that holds per-session data (if available); currently, this is
9711 the peer's certificate chain and, for clients, the server's certificate
9712 and temporary key. CERT holds only those values that can have
9713 meaningful defaults in an SSL_CTX.
9716 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
9717 from the internal representation. Various PKCS#7 fixes: remove some
9718 evil casts and set the enc_dig_alg field properly based on the signing
9722 *) Allow PKCS#12 password to be set from the command line or the
9723 environment. Let 'ca' get its config file name from the environment
9724 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
9728 *) Allow certificate policies extension to use an IA5STRING for the
9729 organization field. This is contrary to the PKIX definition but
9730 VeriSign uses it and IE5 only recognises this form. Document 'x509'
9734 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
9735 without disallowing inline assembler and the like for non-pedantic builds.
9738 *) Support Borland C++ builder.
9739 [Janez Jere <jj@void.si>, modified by Ulf Möller]
9744 *) SHA-1 cleanups and performance enhancements.
9745 [Andy Polyakov <appro@fy.chalmers.se>]
9747 *) Sparc v8plus assembler for the bignum library.
9748 [Andy Polyakov <appro@fy.chalmers.se>]
9750 *) Accept any -xxx and +xxx compiler options in Configure.
9753 *) Update HPUX configuration.
9756 *) Add missing sk_<type>_unshift() function to safestack.h
9757 [Ralf S. Engelschall]
9759 *) New function SSL_CTX_use_certificate_chain_file that sets the
9760 "extra_cert"s in addition to the certificate. (This makes sense
9761 only for "PEM" format files, as chains as a whole are not
9765 *) Support verify_depth from the SSL API.
9766 x509_vfy.c had what can be considered an off-by-one-error:
9767 Its depth (which was not part of the external interface)
9768 was actually counting the number of certificates in a chain;
9769 now it really counts the depth.
9772 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
9773 instead of X509err, which often resulted in confusing error
9774 messages since the error codes are not globally unique
9775 (e.g. an alleged error in ssl3_accept when a certificate
9776 didn't match the private key).
9778 *) New function SSL_CTX_set_session_id_context that allows to set a default
9779 value (so that you don't need SSL_set_session_id_context for each
9780 connection using the SSL_CTX).
9783 *) OAEP decoding bug fix.
9786 *) Support INSTALL_PREFIX for package builders, as proposed by
9790 *) New Configure options "threads" and "no-threads". For systems
9791 where the proper compiler options are known (currently Solaris
9792 and Linux), "threads" is the default.
9795 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
9798 *) Install various scripts to $(OPENSSLDIR)/misc, not to
9799 $(INSTALLTOP)/bin -- they shouldn't clutter directories
9800 such as /usr/local/bin.
9803 *) "make linux-shared" to build shared libraries.
9804 [Niels Poppe <niels@netbox.org>]
9806 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
9809 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
9810 extension adding in x509 utility.
9813 *) Remove NOPROTO sections and error code comments.
9816 *) Partial rewrite of the DEF file generator to now parse the ANSI
9820 *) New Configure options --prefix=DIR and --openssldir=DIR.
9823 *) Complete rewrite of the error code script(s). It is all now handled
9824 by one script at the top level which handles error code gathering,
9825 header rewriting and C source file generation. It should be much better
9826 than the old method: it now uses a modified version of Ulf's parser to
9827 read the ANSI prototypes in all header files (thus the old K&R definitions
9828 aren't needed for error creation any more) and do a better job of
9829 translating function codes into names. The old 'ASN1 error code imbedded
9830 in a comment' is no longer necessary and it doesn't use .err files which
9831 have now been deleted. Also the error code call doesn't have to appear all
9832 on one line (which resulted in some large lines...).
9835 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
9838 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
9839 0 (which usually indicates a closed connection), but continue reading.
9842 *) Fix some race conditions.
9845 *) Add support for CRL distribution points extension. Add Certificate
9846 Policies and CRL distribution points documentation.
9849 *) Move the autogenerated header file parts to crypto/opensslconf.h.
9852 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
9853 8 of keying material. Merlin has also confirmed interop with this fix
9854 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
9855 [Merlin Hughes <merlin@baltimore.ie>]
9857 *) Fix lots of warnings.
9858 [Richard Levitte <levitte@stacken.kth.se>]
9860 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
9861 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
9862 [Richard Levitte <levitte@stacken.kth.se>]
9864 *) Fix problems with sizeof(long) == 8.
9865 [Andy Polyakov <appro@fy.chalmers.se>]
9867 *) Change functions to ANSI C.
9870 *) Fix typos in error codes.
9871 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
9873 *) Remove defunct assembler files from Configure.
9876 *) SPARC v8 assembler BIGNUM implementation.
9877 [Andy Polyakov <appro@fy.chalmers.se>]
9879 *) Support for Certificate Policies extension: both print and set.
9880 Various additions to support the r2i method this uses.
9883 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
9884 return a const string when you are expecting an allocated buffer.
9887 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
9888 types DirectoryString and DisplayText.
9891 *) Add code to allow r2i extensions to access the configuration database,
9892 add an LHASH database driver and add several ctx helper functions.
9895 *) Fix an evil bug in bn_expand2() which caused various BN functions to
9896 fail when they extended the size of a BIGNUM.
9899 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
9900 support typesafe stack.
9903 *) Fix typo in SSL_[gs]et_options().
9904 [Nils Frostberg <nils@medcom.se>]
9906 *) Delete various functions and files that belonged to the (now obsolete)
9907 old X509V3 handling code.
9910 *) New Configure option "rsaref".
9913 *) Don't auto-generate pem.h.
9916 *) Introduce type-safe ASN.1 SETs.
9919 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
9920 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
9922 *) Introduce type-safe STACKs. This will almost certainly break lots of code
9923 that links with OpenSSL (well at least cause lots of warnings), but fear
9924 not: the conversion is trivial, and it eliminates loads of evil casts. A
9925 few STACKed things have been converted already. Feel free to convert more.
9926 In the fullness of time, I'll do away with the STACK type altogether.
9929 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
9930 specified in <certfile> by updating the entry in the index.txt file.
9931 This way one no longer has to edit the index.txt file manually for
9932 revoking a certificate. The -revoke option does the gory details now.
9933 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
9935 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
9936 `-text' option at all and this way the `-noout -text' combination was
9937 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
9938 [Ralf S. Engelschall]
9940 *) Make sure a corresponding plain text error message exists for the
9941 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
9942 verify callback function determined that a certificate was revoked.
9943 [Ralf S. Engelschall]
9945 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
9946 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
9947 all available cipers including rc5, which was forgotten until now.
9948 In order to let the testing shell script know which algorithms
9949 are available, a new (up to now undocumented) command
9950 "openssl list-cipher-commands" is used.
9953 *) Bugfix: s_client occasionally would sleep in select() when
9954 it should have checked SSL_pending() first.
9957 *) New functions DSA_do_sign and DSA_do_verify to provide access to
9958 the raw DSA values prior to ASN.1 encoding.
9961 *) Tweaks to Configure
9962 [Niels Poppe <niels@netbox.org>]
9964 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
9968 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
9971 *) New config option to avoid instructions that are illegal on the 80386.
9972 The default code is faster, but requires at least a 486.
9975 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
9976 SSL2_SERVER_VERSION (not used at all) macros, which are now the
9977 same as SSL2_VERSION anyway.
9980 *) New "-showcerts" option for s_client.
9983 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
9984 application. Various cleanups and fixes.
9987 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
9988 modify error routines to work internally. Add error codes and PBE init
9989 to library startup routines.
9992 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
9993 packing functions to asn1 and evp. Changed function names and error
9994 codes along the way.
9997 *) PKCS12 integration: and so it begins... First of several patches to
9998 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
9999 objects to objects.h
10002 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
10003 and display support for Thawte strong extranet extension.
10006 *) Add LinuxPPC support.
10007 [Jeff Dubrule <igor@pobox.org>]
10009 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
10010 bn_div_words in alpha.s.
10011 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
10013 *) Make sure the RSA OAEP test is skipped under -DRSAref because
10014 OAEP isn't supported when OpenSSL is built with RSAref.
10015 [Ulf Moeller <ulf@fitug.de>]
10017 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
10018 so they no longer are missing under -DNOPROTO.
10019 [Soren S. Jorvang <soren@t.dk>]
10022 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
10024 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
10025 doesn't work when the session is reused. Coming soon!
10028 *) Fix a security hole, that allows sessions to be reused in the wrong
10029 context thus bypassing client cert protection! All software that uses
10030 client certs and session caches in multiple contexts NEEDS PATCHING to
10031 allow session reuse! A fuller solution is in the works.
10032 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
10034 *) Some more source tree cleanups (removed obsolete files
10035 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
10036 permission on "config" script to be executable) and a fix for the INSTALL
10038 [Ulf Moeller <ulf@fitug.de>]
10040 *) Remove some legacy and erroneous uses of malloc, free instead of
10042 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
10044 *) Make rsa_oaep_test return non-zero on error.
10045 [Ulf Moeller <ulf@fitug.de>]
10047 *) Add support for native Solaris shared libraries. Configure
10048 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
10049 if someone would make that last step automatic.
10050 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
10052 *) ctx_size was not built with the right compiler during "make links". Fixed.
10055 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
10056 except NULL ciphers". This means the default cipher list will no longer
10057 enable NULL ciphers. They need to be specifically enabled e.g. with
10058 the string "DEFAULT:eNULL".
10061 *) Fix to RSA private encryption routines: if p < q then it would
10062 occasionally produce an invalid result. This will only happen with
10063 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
10066 *) Be less restrictive and allow also `perl util/perlpath.pl
10067 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
10068 because this way one can also use an interpreter named `perl5' (which is
10069 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
10070 installed as `perl').
10071 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10073 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
10074 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10076 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
10077 advapi32.lib to Win32 build and change the pem test comparision
10078 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
10079 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
10080 and crypto/des/ede_cbcm_enc.c.
10083 *) DES quad checksum was broken on big-endian architectures. Fixed.
10086 *) Comment out two functions in bio.h that aren't implemented. Fix up the
10087 Win32 test batch file so it (might) work again. The Win32 test batch file
10088 is horrible: I feel ill....
10091 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
10092 in e_os.h. Audit of header files to check ANSI and non ANSI
10093 sections: 10 functions were absent from non ANSI section and not exported
10094 from Windows DLLs. Fixed up libeay.num for new functions.
10097 *) Make `openssl version' output lines consistent.
10098 [Ralf S. Engelschall]
10100 *) Fix Win32 symbol export lists for BIO functions: Added
10101 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
10102 to ms/libeay{16,32}.def.
10103 [Ralf S. Engelschall]
10105 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
10106 fine under Unix and passes some trivial tests I've now added. But the
10107 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
10108 added to make sure no one expects that this stuff really works in the
10109 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
10110 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
10112 [Ralf S. Engelschall]
10114 *) Fix the generation of two part addresses in perl.
10115 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
10117 *) Add config entry for Linux on MIPS.
10118 [John Tobey <jtobey@channel1.com>]
10120 *) Make links whenever Configure is run, unless we are on Windoze.
10123 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
10124 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
10128 *) Add a useful kludge to allow package maintainers to specify compiler and
10129 other platforms details on the command line without having to patch the
10130 Configure script everytime: One now can use ``perl Configure
10131 <id>:<details>'', i.e. platform ids are allowed to have details appended
10132 to them (seperated by colons). This is treated as there would be a static
10133 pre-configured entry in Configure's %table under key <id> with value
10134 <details> and ``perl Configure <id>'' is called. So, when you want to
10135 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
10136 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
10137 now, which overrides the FreeBSD-elf entry on-the-fly.
10138 [Ralf S. Engelschall]
10140 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
10143 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
10144 on the `perl Configure ...' command line. This way one can compile
10145 OpenSSL libraries with Position Independent Code (PIC) which is needed
10146 for linking it into DSOs.
10147 [Ralf S. Engelschall]
10149 *) Remarkably, export ciphers were totally broken and no-one had noticed!
10153 *) Cleaned up the LICENSE document: The official contact for any license
10154 questions now is the OpenSSL core team under openssl-core@openssl.org.
10155 And add a paragraph about the dual-license situation to make sure people
10156 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
10157 to the OpenSSL toolkit.
10158 [Ralf S. Engelschall]
10160 *) General source tree makefile cleanups: Made `making xxx in yyy...'
10161 display consistent in the source tree and replaced `/bin/rm' by `rm'.
10162 Additonally cleaned up the `make links' target: Remove unnecessary
10163 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
10164 to speed processing and no longer clutter the display with confusing
10165 stuff. Instead only the actually done links are displayed.
10166 [Ralf S. Engelschall]
10168 *) Permit null encryption ciphersuites, used for authentication only. It used
10169 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
10170 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
10174 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
10175 signed attributes when verifying signatures (this would break them),
10176 the detached data encoding was wrong and public keys obtained using
10177 X509_get_pubkey() weren't freed.
10180 *) Add text documentation for the BUFFER functions. Also added a work around
10181 to a Win95 console bug. This was triggered by the password read stuff: the
10182 last character typed gets carried over to the next fread(). If you were
10183 generating a new cert request using 'req' for example then the last
10184 character of the passphrase would be CR which would then enter the first
10188 *) Added the new `Includes OpenSSL Cryptography Software' button as
10189 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
10190 button and can be used by applications based on OpenSSL to show the
10191 relationship to the OpenSSL project.
10192 [Ralf S. Engelschall]
10194 *) Remove confusing variables in function signatures in files
10195 ssl/ssl_lib.c and ssl/ssl.h.
10196 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10198 *) Don't install bss_file.c under PREFIX/include/
10199 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10201 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
10202 functions that return function pointers and has support for NT specific
10203 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
10204 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
10205 unsigned to signed types: this was killing the Win32 compile.
10208 *) Add new certificate file to stack functions,
10209 SSL_add_dir_cert_subjects_to_stack() and
10210 SSL_add_file_cert_subjects_to_stack(). These largely supplant
10211 SSL_load_client_CA_file(), and can be used to add multiple certs easily
10212 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
10213 This means that Apache-SSL and similar packages don't have to mess around
10214 to add as many CAs as they want to the preferred list.
10217 *) Experiment with doxygen documentation. Currently only partially applied to
10219 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
10220 openssl.doxy as the configuration file.
10223 *) Get rid of remaining C++-style comments which strict C compilers hate.
10224 [Ralf S. Engelschall, pointed out by Carlos Amengual]
10226 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
10227 compiled in by default: it has problems with large keys.
10230 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
10231 DH private keys and/or callback functions which directly correspond to
10232 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
10233 is needed for applications which have to configure certificates on a
10234 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
10236 For the RSA certificate situation is makes no difference, but
10237 for the DSA certificate situation this fixes the "no shared cipher"
10238 problem where the OpenSSL cipher selection procedure failed because the
10239 temporary keys were not overtaken from the context and the API provided
10240 no way to reconfigure them.
10241 The new functions now let applications reconfigure the stuff and they
10242 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
10243 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
10244 non-public-API function ssl_cert_instantiate() is used as a helper
10245 function and also to reduce code redundancy inside ssl_rsa.c.
10246 [Ralf S. Engelschall]
10248 *) Move s_server -dcert and -dkey options out of the undocumented feature
10249 area because they are useful for the DSA situation and should be
10250 recognized by the users.
10251 [Ralf S. Engelschall]
10253 *) Fix the cipher decision scheme for export ciphers: the export bits are
10254 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
10255 SSL_EXP_MASK. So, the original variable has to be used instead of the
10256 already masked variable.
10257 [Richard Levitte <levitte@stacken.kth.se>]
10259 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
10260 [Richard Levitte <levitte@stacken.kth.se>]
10262 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
10263 from `int' to `unsigned int' because it's a length and initialized by
10264 EVP_DigestFinal() which expects an `unsigned int *'.
10265 [Richard Levitte <levitte@stacken.kth.se>]
10267 *) Don't hard-code path to Perl interpreter on shebang line of Configure
10268 script. Instead use the usual Shell->Perl transition trick.
10269 [Ralf S. Engelschall]
10271 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
10272 (in addition to RSA certificates) to match the behaviour of `openssl dsa
10273 -noout -modulus' as it's already the case for `openssl rsa -noout
10274 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
10275 currently the public key is printed (a decision which was already done by
10276 `openssl dsa -modulus' in the past) which serves a similar purpose.
10277 Additionally the NO_RSA no longer completely removes the whole -modulus
10278 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
10280 [Ralf S. Engelschall]
10282 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
10283 BIO. See the source (crypto/evp/bio_ok.c) for more info.
10284 [Arne Ansper <arne@ats.cyber.ee>]
10286 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
10287 to be added. Now both 'req' and 'ca' can use new objects defined in the
10291 *) Add cool BIO that does syslog (or event log on NT).
10292 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
10294 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
10295 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
10296 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
10297 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
10300 *) Add preliminary config info for new extension code.
10303 *) Make RSA_NO_PADDING really use no padding.
10304 [Ulf Moeller <ulf@fitug.de>]
10306 *) Generate errors when private/public key check is done.
10309 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
10310 for some CRL extensions and new objects added.
10313 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
10314 key usage extension and fuller support for authority key id.
10317 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
10318 padding method for RSA, which is recommended for new applications in PKCS
10319 #1 v2.0 (RFC 2437, October 1998).
10320 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
10321 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
10322 against Bleichbacher's attack on RSA.
10323 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
10326 *) Updates to the new SSL compression code
10327 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10329 *) Fix so that the version number in the master secret, when passed
10330 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
10331 (because the server will not accept higher), that the version number
10332 is 0x03,0x01, not 0x03,0x00
10333 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10335 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
10336 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
10337 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
10340 *) Support for RAW extensions where an arbitrary extension can be
10341 created by including its DER encoding. See apps/openssl.cnf for
10345 *) Make sure latest Perl versions don't interpret some generated C array
10346 code as Perl array code in the crypto/err/err_genc.pl script.
10347 [Lars Weber <3weber@informatik.uni-hamburg.de>]
10349 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
10350 not many people have the assembler. Various Win32 compilation fixes and
10351 update to the INSTALL.W32 file with (hopefully) more accurate Win32
10352 build instructions.
10355 *) Modify configure script 'Configure' to automatically create crypto/date.h
10356 file under Win32 and also build pem.h from pem.org. New script
10357 util/mkfiles.pl to create the MINFO file on environments that can't do a
10358 'make files': perl util/mkfiles.pl >MINFO should work.
10361 *) Major rework of DES function declarations, in the pursuit of correctness
10362 and purity. As a result, many evil casts evaporated, and some weirdness,
10363 too. You may find this causes warnings in your code. Zapping your evil
10364 casts will probably fix them. Mostly.
10367 *) Fix for a typo in asn1.h. Bug fix to object creation script
10368 obj_dat.pl. It considered a zero in an object definition to mean
10369 "end of object": none of the objects in objects.h have any zeros
10370 so it wasn't spotted.
10371 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
10373 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
10374 Masking (CBCM). In the absence of test vectors, the best I have been able
10375 to do is check that the decrypt undoes the encrypt, so far. Send me test
10376 vectors if you have them.
10379 *) Correct calculation of key length for export ciphers (too much space was
10380 allocated for null ciphers). This has not been tested!
10383 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
10384 message is now correct (it understands "crypto" and "ssl" on its
10385 command line). There is also now an "update" option. This will update
10386 the util/ssleay.num and util/libeay.num files with any new functions.
10388 perl util/mkdef.pl crypto ssl update
10389 it will update them.
10392 *) Overhauled the Perl interface (perl/*):
10393 - ported BN stuff to OpenSSL's different BN library
10394 - made the perl/ source tree CVS-aware
10395 - renamed the package from SSLeay to OpenSSL (the files still contain
10396 their history because I've copied them in the repository)
10397 - removed obsolete files (the test scripts will be replaced
10398 by better Test::Harness variants in the future)
10399 [Ralf S. Engelschall]
10401 *) First cut for a very conservative source tree cleanup:
10402 1. merge various obsolete readme texts into doc/ssleay.txt
10403 where we collect the old documents and readme texts.
10404 2. remove the first part of files where I'm already sure that we no
10405 longer need them because of three reasons: either they are just temporary
10406 files which were left by Eric or they are preserved original files where
10407 I've verified that the diff is also available in the CVS via "cvs diff
10408 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
10409 the crypto/md/ stuff).
10410 [Ralf S. Engelschall]
10412 *) More extension code. Incomplete support for subject and issuer alt
10413 name, issuer and authority key id. Change the i2v function parameters
10414 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
10415 what that's for :-) Fix to ASN1 macro which messed up
10416 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
10419 *) Preliminary support for ENUMERATED type. This is largely copied from the
10423 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
10424 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10426 *) Make sure `make rehash' target really finds the `openssl' program.
10427 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10429 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
10430 like to hear about it if this slows down other processors.
10433 *) Add CygWin32 platform information to Configure script.
10434 [Alan Batie <batie@aahz.jf.intel.com>]
10436 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
10437 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
10439 *) New program nseq to manipulate netscape certificate sequences
10442 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
10446 *) Fixes to BN code. Previously the default was to define BN_RECURSION
10447 but the BN code had some problems that would cause failures when
10448 doing certificate verification and some other functions.
10449 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10451 *) Add ASN1 and PEM code to support netscape certificate sequences.
10454 *) Add ASN1 and PEM code to support netscape certificate sequences.
10457 *) Add several PKIX and private extended key usage OIDs.
10460 *) Modify the 'ca' program to handle the new extension code. Modify
10461 openssl.cnf for new extension format, add comments.
10464 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
10465 and add a sample to openssl.cnf so req -x509 now adds appropriate
10469 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
10470 error code, add initial support to X509_print() and x509 application.
10473 *) Takes a deep breath and start addding X509 V3 extension support code. Add
10474 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
10475 stuff is currently isolated and isn't even compiled yet.
10478 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
10479 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
10480 Removed the versions check from X509 routines when loading extensions:
10481 this allows certain broken certificates that don't set the version
10482 properly to be processed.
10485 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
10486 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
10487 can still be regenerated with "make depend".
10490 *) Spelling mistake in C version of CAST-128.
10491 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
10493 *) Changes to the error generation code. The perl script err-code.pl
10494 now reads in the old error codes and retains the old numbers, only
10495 adding new ones if necessary. It also only changes the .err files if new
10496 codes are added. The makefiles have been modified to only insert errors
10497 when needed (to avoid needlessly modifying header files). This is done
10498 by only inserting errors if the .err file is newer than the auto generated
10499 C file. To rebuild all the error codes from scratch (the old behaviour)
10500 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
10501 or delete all the .err files.
10504 *) CAST-128 was incorrectly implemented for short keys. The C version has
10505 been fixed, but is untested. The assembler versions are also fixed, but
10506 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
10507 to regenerate it if needed.
10508 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
10509 Hagino <itojun@kame.net>]
10511 *) File was opened incorrectly in randfile.c.
10512 [Ulf Möller <ulf@fitug.de>]
10514 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
10515 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
10516 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
10517 al: it's just almost always a UTCTime. Note this patch adds new error
10518 codes so do a "make errors" if there are problems.
10521 *) Correct Linux 1 recognition in config.
10522 [Ulf Möller <ulf@fitug.de>]
10524 *) Remove pointless MD5 hash when using DSA keys in ca.
10525 [Anonymous <nobody@replay.com>]
10527 *) Generate an error if given an empty string as a cert directory. Also
10528 generate an error if handed NULL (previously returned 0 to indicate an
10529 error, but didn't set one).
10530 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
10532 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
10535 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
10536 parameters. This was causing a warning which killed off the Win32 compile.
10539 *) Remove C++ style comments from crypto/bn/bn_local.h.
10540 [Neil Costigan <neil.costigan@celocom.com>]
10542 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
10543 based on a text string, looking up short and long names and finally
10544 "dot" format. The "dot" format stuff didn't work. Added new function
10545 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
10546 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
10547 OID is not part of the table.
10550 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
10551 X509_LOOKUP_by_alias().
10554 *) Sort openssl functions by name.
10557 *) Get the gendsa program working (hopefully) and add it to app list. Remove
10558 encryption from sample DSA keys (in case anyone is interested the password
10562 *) Make _all_ *_free functions accept a NULL pointer.
10563 [Frans Heymans <fheymans@isaserver.be>]
10565 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
10567 [Anonymous <nobody@replay.com>]
10569 *) s_server should send the CAfile as acceptable CAs, not its own cert.
10570 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
10572 *) Don't blow it for numeric -newkey arguments to apps/req.
10573 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
10575 *) Temp key "for export" tests were wrong in s3_srvr.c.
10576 [Anonymous <nobody@replay.com>]
10578 *) Add prototype for temp key callback functions
10579 SSL_CTX_set_tmp_{rsa,dh}_callback().
10582 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
10583 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
10586 *) X509_name_add_entry() freed the wrong thing after an error.
10587 [Arne Ansper <arne@ats.cyber.ee>]
10589 *) rsa_eay.c would attempt to free a NULL context.
10590 [Arne Ansper <arne@ats.cyber.ee>]
10592 *) BIO_s_socket() had a broken should_retry() on Windoze.
10593 [Arne Ansper <arne@ats.cyber.ee>]
10595 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
10596 [Arne Ansper <arne@ats.cyber.ee>]
10598 *) Make sure the already existing X509_STORE->depth variable is initialized
10599 in X509_STORE_new(), but document the fact that this variable is still
10600 unused in the certificate verification process.
10601 [Ralf S. Engelschall]
10603 *) Fix the various library and apps files to free up pkeys obtained from
10604 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
10607 *) Fix reference counting in X509_PUBKEY_get(). This makes
10608 demos/maurice/example2.c work, amongst others, probably.
10609 [Steve Henson and Ben Laurie]
10611 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
10612 `openssl' and second, the shortcut symlinks for the `openssl <command>'
10613 are no longer created. This way we have a single and consistent command
10614 line interface `openssl <command>', similar to `cvs <command>'.
10615 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
10617 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
10618 BIT STRING wrapper always have zero unused bits.
10621 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
10624 *) Make the top-level INSTALL documentation easier to understand.
10627 *) Makefiles updated to exit if an error occurs in a sub-directory
10628 make (including if user presses ^C) [Paul Sutton]
10630 *) Make Montgomery context stuff explicit in RSA data structure.
10633 *) Fix build order of pem and err to allow for generated pem.h.
10636 *) Fix renumbering bug in X509_NAME_delete_entry().
10639 *) Enhanced the err-ins.pl script so it makes the error library number
10640 global and can add a library name. This is needed for external ASN1 and
10641 other error libraries.
10644 *) Fixed sk_insert which never worked properly.
10647 *) Fix ASN1 macros so they can handle indefinite length construted
10648 EXPLICIT tags. Some non standard certificates use these: they can now
10652 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
10653 into a single doc/ssleay.txt bundle. This way the information is still
10654 preserved but no longer messes up this directory. Now it's new room for
10655 the new set of documenation files.
10656 [Ralf S. Engelschall]
10658 *) SETs were incorrectly DER encoded. This was a major pain, because they
10659 shared code with SEQUENCEs, which aren't coded the same. This means that
10660 almost everything to do with SETs or SEQUENCEs has either changed name or
10661 number of arguments.
10662 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
10664 *) Fix test data to work with the above.
10667 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
10668 was already fixed by Eric for 0.9.1 it seems.
10669 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
10671 *) Autodetect FreeBSD3.
10674 *) Fix various bugs in Configure. This affects the following platforms:
10678 unixware-2.0-pentium
10682 *) Eliminate generated files from CVS. Reorder tests to regenerate files
10683 before they are needed.
10686 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
10690 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
10692 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
10693 changed SSLeay to OpenSSL in version strings.
10694 [Ralf S. Engelschall]
10696 *) Some fixups to the top-level documents.
10699 *) Fixed the nasty bug where rsaref.h was not found under compile-time
10700 because the symlink to include/ was missing.
10701 [Ralf S. Engelschall]
10703 *) Incorporated the popular no-RSA/DSA-only patches
10704 which allow to compile a RSA-free SSLeay.
10705 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
10707 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
10708 when "ssleay" is still not found.
10709 [Ralf S. Engelschall]
10711 *) Added more platforms to Configure: Cray T3E, HPUX 11,
10712 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
10714 *) Updated the README file.
10715 [Ralf S. Engelschall]
10717 *) Added various .cvsignore files in the CVS repository subdirs
10718 to make a "cvs update" really silent.
10719 [Ralf S. Engelschall]
10721 *) Recompiled the error-definition header files and added
10722 missing symbols to the Win32 linker tables.
10723 [Ralf S. Engelschall]
10725 *) Cleaned up the top-level documents;
10726 o new files: CHANGES and LICENSE
10727 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
10728 o merged COPYRIGHT into LICENSE
10729 o removed obsolete TODO file
10730 o renamed MICROSOFT to INSTALL.W32
10731 [Ralf S. Engelschall]
10733 *) Removed dummy files from the 0.9.1b source tree:
10734 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
10735 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
10736 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
10737 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
10738 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
10739 [Ralf S. Engelschall]
10741 *) Added various platform portability fixes.
10744 *) The Genesis of the OpenSSL rpject:
10745 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
10746 Young and Tim J. Hudson created while they were working for C2Net until
10748 [The OpenSSL Project]
10751 Changes between 0.9.0b and 0.9.1b [not released]
10753 *) Updated a few CA certificates under certs/
10756 *) Changed some BIGNUM api stuff.
10759 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
10760 DGUX x86, Linux Alpha, etc.
10763 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
10764 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
10768 *) Add -strparse option to asn1pars program which parses nested
10770 [Dr Stephen Henson <shenson@bigfoot.com>]
10772 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
10775 *) DSA fix for "ca" program.
10778 *) Added "-genkey" option to "dsaparam" program.
10781 *) Added RIPE MD160 (rmd160) message digest.
10784 *) Added -a (all) option to "ssleay version" command.
10787 *) Added PLATFORM define which is the id given to Configure.
10790 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
10793 *) Extended the ASN.1 parser routines.
10796 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
10799 *) Added a BN_CTX to the BN library.
10802 *) Fixed the weak key values in DES library
10805 *) Changed API in EVP library for cipher aliases.
10808 *) Added support for RC2/64bit cipher.
10811 *) Converted the lhash library to the crypto/mem.c functions.
10814 *) Added more recognized ASN.1 object ids.
10817 *) Added more RSA padding checks for SSL/TLS.
10820 *) Added BIO proxy/filter functionality.
10823 *) Added extra_certs to SSL_CTX which can be used
10824 send extra CA certificates to the client in the CA cert chain sending
10825 process. It can be configured with SSL_CTX_add_extra_chain_cert().
10828 *) Now Fortezza is denied in the authentication phase because
10829 this is key exchange mechanism is not supported by SSLeay at all.
10832 *) Additional PKCS1 checks.
10835 *) Support the string "TLSv1" for all TLS v1 ciphers.
10838 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
10839 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
10842 *) Fixed a few memory leaks.
10845 *) Fixed various code and comment typos.
10848 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
10849 bytes sent in the client random.
10850 [Edward Bishop <ebishop@spyglass.com>]
projects / openssl.git / blob