5 This file gives a brief overview of the major changes between each OpenSSL
6 release. For more details please read the CHANGES file.
8 Major changes between OpenSSL 1.0.1a and OpenSSL 1.0.1b:
10 o Fix compilation error on non-x86 platforms.
11 o Make FIPS capable OpenSSL ciphers work in non-FIPS mode.
12 o Fix SSL_OP_NO_TLSv1_1 clash with SSL_OP_ALL in OpenSSL 1.0.0
14 Major changes between OpenSSL 1.0.1 and OpenSSL 1.0.1a:
16 o Fix for ASN1 overflow bug CVE-2012-2110
17 o Workarounds for some servers that hang on long client hellos.
18 o Fix SEGV in AES code.
20 Major changes between OpenSSL 1.0.0h and OpenSSL 1.0.1:
22 o TLS/DTLS heartbeat support.
24 o RFC 5705 TLS key material exporter.
25 o RFC 5764 DTLS-SRTP negotiation.
26 o Next Protocol Negotiation.
27 o PSS signatures in certificates, requests and CRLs.
28 o Support for password based recipient info for CMS.
29 o Support TLS v1.2 and TLS v1.1.
30 o Preliminary FIPS capability for unvalidated 2.0 FIPS module.
33 Major changes between OpenSSL 1.0.0g and OpenSSL 1.0.0h:
35 o Fix for CMS/PKCS#7 MMA CVE-2012-0884
36 o Corrected fix for CVE-2011-4619
39 Major changes between OpenSSL 1.0.0f and OpenSSL 1.0.0g:
41 o Fix for DTLS DoS issue CVE-2012-0050
43 Major changes between OpenSSL 1.0.0e and OpenSSL 1.0.0f:
45 o Fix for DTLS plaintext recovery attack CVE-2011-4108
46 o Clear block padding bytes of SSL 3.0 records CVE-2011-4576
47 o Only allow one SGC handshake restart for SSL/TLS CVE-2011-4619
48 o Check parameters are not NULL in GOST ENGINE CVE-2012-0027
49 o Check for malformed RFC3779 data CVE-2011-4577
51 Major changes between OpenSSL 1.0.0d and OpenSSL 1.0.0e:
53 o Fix for CRL vulnerability issue CVE-2011-3207
54 o Fix for ECDH crashes CVE-2011-3210
55 o Protection against EC timing attacks.
56 o Support ECDH ciphersuites for certificates using SHA2 algorithms.
59 Major changes between OpenSSL 1.0.0c and OpenSSL 1.0.0d:
61 o Fix for security issue CVE-2011-0014
63 Major changes between OpenSSL 1.0.0b and OpenSSL 1.0.0c:
65 o Fix for security issue CVE-2010-4180
66 o Fix for CVE-2010-4252
67 o Fix mishandling of absent EC point format extension.
68 o Fix various platform compilation issues.
69 o Corrected fix for security issue CVE-2010-3864.
71 Major changes between OpenSSL 1.0.0a and OpenSSL 1.0.0b:
73 o Fix for security issue CVE-2010-3864.
74 o Fix for CVE-2010-2939
75 o Fix WIN32 build system for GOST ENGINE.
77 Major changes between OpenSSL 1.0.0 and OpenSSL 1.0.0a:
79 o Fix for security issue CVE-2010-1633.
80 o GOST MAC and CFB fixes.
82 Major changes between OpenSSL 0.9.8n and OpenSSL 1.0.0:
84 o RFC3280 path validation: sufficient to process PKITS tests.
85 o Integrated support for PVK files and keyblobs.
86 o Change default private key format to PKCS#8.
87 o CMS support: able to process all examples in RFC4134
88 o Streaming ASN1 encode support for PKCS#7 and CMS.
89 o Multiple signer and signer add support for PKCS#7 and CMS.
90 o ASN1 printing support.
91 o Whirlpool hash algorithm added.
92 o RFC3161 time stamp support.
93 o New generalised public key API supporting ENGINE based algorithms.
94 o New generalised public key API utilities.
95 o New ENGINE supporting GOST algorithms.
96 o SSL/TLS GOST ciphersuite support.
97 o PKCS#7 and CMS GOST support.
98 o RFC4279 PSK ciphersuite support.
99 o Supported points format extension for ECC ciphersuites.
100 o ecdsa-with-SHA224/256/384/512 signature types.
101 o dsa-with-SHA224 and dsa-with-SHA256 signature types.
102 o Opaque PRF Input TLS extension support.
103 o Updated time routines to avoid OS limitations.
105 Major changes between OpenSSL 0.9.8q and OpenSSL 0.9.8r:
107 o Fix for security issue CVE-2011-0014
109 Major changes between OpenSSL 0.9.8p and OpenSSL 0.9.8q:
111 o Fix for security issue CVE-2010-4180
112 o Fix for CVE-2010-4252
114 Major changes between OpenSSL 0.9.8o and OpenSSL 0.9.8p:
116 o Fix for security issue CVE-2010-3864.
118 Major changes between OpenSSL 0.9.8n and OpenSSL 0.9.8o:
120 o Fix for security issue CVE-2010-0742.
121 o Various DTLS fixes.
122 o Recognise SHA2 certificates if only SSL algorithms added.
123 o Fix for no-rc4 compilation.
124 o Chil ENGINE unload workaround.
126 Major changes between OpenSSL 0.9.8m and OpenSSL 0.9.8n:
128 o CFB cipher definition fixes.
129 o Fix security issues CVE-2010-0740 and CVE-2010-0433.
131 Major changes between OpenSSL 0.9.8l and OpenSSL 0.9.8m:
133 o Cipher definition fixes.
134 o Workaround for slow RAND_poll() on some WIN32 versions.
135 o Remove MD2 from algorithm tables.
136 o SPKAC handling fixes.
137 o Support for RFC5746 TLS renegotiation extension.
138 o Compression memory leak fixed.
139 o Compression session resumption fixed.
140 o Ticket and SNI coexistence fixes.
141 o Many fixes to DTLS handling.
143 Major changes between OpenSSL 0.9.8k and OpenSSL 0.9.8l:
145 o Temporary work around for CVE-2009-3555: disable renegotiation.
147 Major changes between OpenSSL 0.9.8j and OpenSSL 0.9.8k:
149 o Fix various build issues.
150 o Fix security issues (CVE-2009-0590, CVE-2009-0591, CVE-2009-0789)
152 Major changes between OpenSSL 0.9.8i and OpenSSL 0.9.8j:
154 o Fix security issue (CVE-2008-5077)
155 o Merge FIPS 140-2 branch code.
157 Major changes between OpenSSL 0.9.8g and OpenSSL 0.9.8h:
159 o CryptoAPI ENGINE support.
160 o Various precautionary measures.
161 o Fix for bugs affecting certificate request creation.
162 o Support for local machine keyset attribute in PKCS#12 files.
164 Major changes between OpenSSL 0.9.8f and OpenSSL 0.9.8g:
166 o Backport of CMS functionality to 0.9.8.
167 o Fixes for bugs introduced with 0.9.8f.
169 Major changes between OpenSSL 0.9.8e and OpenSSL 0.9.8f:
171 o Add gcc 4.2 support.
172 o Add support for AES and SSE2 assembly lanugauge optimization
174 o Support for RFC4507bis and server name extensions if explicitly
175 selected at compile time.
177 o RFC4507bis support.
178 o TLS Extensions support.
180 Major changes between OpenSSL 0.9.8d and OpenSSL 0.9.8e:
182 o Various ciphersuite selection fixes.
185 Major changes between OpenSSL 0.9.8c and OpenSSL 0.9.8d:
187 o Introduce limits to prevent malicious key DoS (CVE-2006-2940)
188 o Fix security issues (CVE-2006-2937, CVE-2006-3737, CVE-2006-4343)
189 o Changes to ciphersuite selection algorithm
191 Major changes between OpenSSL 0.9.8b and OpenSSL 0.9.8c:
193 o Fix Daniel Bleichenbacher forged signature attack, CVE-2006-4339
194 o New cipher Camellia
196 Major changes between OpenSSL 0.9.8a and OpenSSL 0.9.8b:
198 o Cipher string fixes.
199 o Fixes for VC++ 2005.
200 o Updated ECC cipher suite support.
201 o New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free().
202 o Zlib compression usage fixes.
203 o Built in dynamic engine compilation support on Win32.
204 o Fixes auto dynamic engine loading in Win32.
206 Major changes between OpenSSL 0.9.8 and OpenSSL 0.9.8a:
208 o Fix potential SSL 2.0 rollback, CVE-2005-2969
209 o Extended Windows CE support
211 Major changes between OpenSSL 0.9.7g and OpenSSL 0.9.8:
213 o Major work on the BIGNUM library for higher efficiency and to
214 make operations more streamlined and less contradictory. This
215 is the result of a major audit of the BIGNUM library.
216 o Addition of BIGNUM functions for fields GF(2^m) and NIST
217 curves, to support the Elliptic Crypto functions.
218 o Major work on Elliptic Crypto; ECDH and ECDSA added, including
219 the use through EVP, X509 and ENGINE.
220 o New ASN.1 mini-compiler that's usable through the OpenSSL
222 o Added support for ASN.1 indefinite length constructed encoding.
223 o New PKCS#12 'medium level' API to manipulate PKCS#12 files.
224 o Complete rework of shared library construction and linking
225 programs with shared or static libraries, through a separate
227 o Rework of the passing of parameters from one Makefile to another.
228 o Changed ENGINE framework to load dynamic engine modules
229 automatically from specifically given directories.
230 o New structure and ASN.1 functions for CertificatePair.
231 o Changed the ZLIB compression method to be stateful.
232 o Changed the key-generation and primality testing "progress"
233 mechanism to take a structure that contains the ticker
234 function and an argument.
235 o New engine module: GMP (performs private key exponentiation).
236 o New engine module: VIA PadLOck ACE extension in VIA C3
238 o Added support for IPv6 addresses in certificate extensions.
239 See RFC 1884, section 2.2.
240 o Added support for certificate policy mappings, policy
241 constraints and name constraints.
242 o Added support for multi-valued AVAs in the OpenSSL
244 o Added support for multiple certificates with the same subject
245 in the 'openssl ca' index file.
246 o Make it possible to create self-signed certificates using
247 'openssl ca -selfsign'.
248 o Make it possible to generate a serial number file with
249 'openssl ca -create_serial'.
250 o New binary search functions with extended functionality.
252 o New STORE structure and library to provide an interface to all
253 sorts of data repositories. Supports storage of public and
254 private keys, certificates, CRLs, numbers and arbitrary blobs.
255 This library is unfortunately unfinished and unused withing
257 o New control functions for the error stack.
258 o Changed the PKCS#7 library to support one-pass S/MIME
260 o Added the possibility to compile without old deprecated
261 functionality with the OPENSSL_NO_DEPRECATED macro or the
262 'no-deprecated' argument to the config and Configure scripts.
263 o Constification of all ASN.1 conversion functions, and other
265 o Improved platform support for PowerPC.
266 o New FIPS 180-2 algorithms (SHA-224, -256, -384 and -512).
267 o New X509_VERIFY_PARAM structure to support parametrisation
268 of X.509 path validation.
269 o Major overhaul of RC4 performance on Intel P4, IA-64 and
271 o Changed the Configure script to have some algorithms disabled
272 by default. Those can be explicitely enabled with the new
273 argument form 'enable-xxx'.
274 o Change the default digest in 'openssl' commands from MD5 to
276 o Added support for DTLS.
277 o New BIGNUM blinding.
278 o Added support for the RSA-PSS encryption scheme
279 o Added support for the RSA X.931 padding.
280 o Added support for BSD sockets on NetWare.
281 o Added support for files larger than 2GB.
282 o Added initial support for Win64.
283 o Added alternate pkg-config files.
285 Major changes between OpenSSL 0.9.7l and OpenSSL 0.9.7m:
287 o FIPS 1.1.1 module linking.
288 o Various ciphersuite selection fixes.
290 Major changes between OpenSSL 0.9.7k and OpenSSL 0.9.7l:
292 o Introduce limits to prevent malicious key DoS (CVE-2006-2940)
293 o Fix security issues (CVE-2006-2937, CVE-2006-3737, CVE-2006-4343)
295 Major changes between OpenSSL 0.9.7j and OpenSSL 0.9.7k:
297 o Fix Daniel Bleichenbacher forged signature attack, CVE-2006-4339
299 Major changes between OpenSSL 0.9.7i and OpenSSL 0.9.7j:
301 o Visual C++ 2005 fixes.
302 o Update Windows build system for FIPS.
304 Major changes between OpenSSL 0.9.7h and OpenSSL 0.9.7i:
306 o Give EVP_MAX_MD_SIZE it's old value, except for a FIPS build.
308 Major changes between OpenSSL 0.9.7g and OpenSSL 0.9.7h:
310 o Fix SSL 2.0 Rollback, CVE-2005-2969
311 o Allow use of fixed-length exponent on DSA signing
312 o Default fixed-window RSA, DSA, DH private-key operations
314 Major changes between OpenSSL 0.9.7f and OpenSSL 0.9.7g:
316 o More compilation issues fixed.
317 o Adaptation to more modern Kerberos API.
318 o Enhanced or corrected configuration for Solaris64, Mingw and Cygwin.
319 o Enhanced x86_64 assembler BIGNUM module.
320 o More constification.
321 o Added processing of proxy certificates (RFC 3820).
323 Major changes between OpenSSL 0.9.7e and OpenSSL 0.9.7f:
325 o Several compilation issues fixed.
326 o Many memory allocation failure checks added.
327 o Improved comparison of X509 Name type.
328 o Mandatory basic checks on certificates.
329 o Performance improvements.
331 Major changes between OpenSSL 0.9.7d and OpenSSL 0.9.7e:
333 o Fix race condition in CRL checking code.
334 o Fixes to PKCS#7 (S/MIME) code.
336 Major changes between OpenSSL 0.9.7c and OpenSSL 0.9.7d:
338 o Security: Fix Kerberos ciphersuite SSL/TLS handshaking bug
339 o Security: Fix null-pointer assignment in do_change_cipher_spec()
340 o Allow multiple active certificates with same subject in CA index
341 o Multiple X509 verification fixes
342 o Speed up HMAC and other operations
344 Major changes between OpenSSL 0.9.7b and OpenSSL 0.9.7c:
346 o Security: fix various ASN1 parsing bugs.
347 o New -ignore_err option to OCSP utility.
348 o Various interop and bug fixes in S/MIME code.
349 o SSL/TLS protocol fix for unrequested client certificates.
351 Major changes between OpenSSL 0.9.7a and OpenSSL 0.9.7b:
353 o Security: counter the Klima-Pokorny-Rosa extension of
354 Bleichbacher's attack
355 o Security: make RSA blinding default.
356 o Configuration: Irix fixes, AIX fixes, better mingw support.
357 o Support for new platforms: linux-ia64-ecc.
358 o Build: shared library support fixes.
359 o ASN.1: treat domainComponent correctly.
360 o Documentation: fixes and additions.
362 Major changes between OpenSSL 0.9.7 and OpenSSL 0.9.7a:
364 o Security: Important security related bugfixes.
365 o Enhanced compatibility with MIT Kerberos.
366 o Can be built without the ENGINE framework.
367 o IA32 assembler enhancements.
368 o Support for new platforms: FreeBSD/IA64 and FreeBSD/Sparc64.
369 o Configuration: the no-err option now works properly.
370 o SSL/TLS: now handles manual certificate chain building.
371 o SSL/TLS: certain session ID malfunctions corrected.
373 Major changes between OpenSSL 0.9.6 and OpenSSL 0.9.7:
375 o New library section OCSP.
376 o Complete rewrite of ASN1 code.
377 o CRL checking in verify code and openssl utility.
378 o Extension copying in 'ca' utility.
379 o Flexible display options in 'ca' utility.
380 o Provisional support for international characters with UTF8.
381 o Support for external crypto devices ('engine') is no longer
382 a separate distribution.
383 o New elliptic curve library section.
384 o New AES (Rijndael) library section.
385 o Support for new platforms: Windows CE, Tandem OSS, A/UX, AIX 64-bit,
386 Linux x86_64, Linux 64-bit on Sparc v9
387 o Extended support for some platforms: VxWorks
388 o Enhanced support for shared libraries.
389 o Now only builds PIC code when shared library support is requested.
390 o Support for pkg-config.
391 o Lots of new manuals.
392 o Makes symbolic links to or copies of manuals to cover all described
394 o Change DES API to clean up the namespace (some applications link also
395 against libdes providing similar functions having the same name).
396 Provide macros for backward compatibility (will be removed in the
398 o Unify handling of cryptographic algorithms (software and engine)
399 to be available via EVP routines for asymmetric and symmetric ciphers.
400 o NCONF: new configuration handling routines.
401 o Change API to use more 'const' modifiers to improve error checking
403 o Finally remove references to RSAref.
404 o Reworked parts of the BIGNUM code.
405 o Support for new engines: Broadcom ubsec, Accelerated Encryption
406 Processing, IBM 4758.
407 o A few new engines added in the demos area.
408 o Extended and corrected OID (object identifier) table.
409 o PRNG: query at more locations for a random device, automatic query for
410 EGD style random sources at several locations.
411 o SSL/TLS: allow optional cipher choice according to server's preference.
412 o SSL/TLS: allow server to explicitly set new session ids.
413 o SSL/TLS: support Kerberos cipher suites (RFC2712).
414 Only supports MIT Kerberos for now.
415 o SSL/TLS: allow more precise control of renegotiations and sessions.
416 o SSL/TLS: add callback to retrieve SSL/TLS messages.
417 o SSL/TLS: support AES cipher suites (RFC3268).
419 Major changes between OpenSSL 0.9.6j and OpenSSL 0.9.6k:
421 o Security: fix various ASN1 parsing bugs.
422 o SSL/TLS protocol fix for unrequested client certificates.
424 Major changes between OpenSSL 0.9.6i and OpenSSL 0.9.6j:
426 o Security: counter the Klima-Pokorny-Rosa extension of
427 Bleichbacher's attack
428 o Security: make RSA blinding default.
429 o Build: shared library support fixes.
431 Major changes between OpenSSL 0.9.6h and OpenSSL 0.9.6i:
433 o Important security related bugfixes.
435 Major changes between OpenSSL 0.9.6g and OpenSSL 0.9.6h:
437 o New configuration targets for Tandem OSS and A/UX.
438 o New OIDs for Microsoft attributes.
439 o Better handling of SSL session caching.
440 o Better comparison of distinguished names.
441 o Better handling of shared libraries in a mixed GNU/non-GNU environment.
442 o Support assembler code with Borland C.
443 o Fixes for length problems.
444 o Fixes for uninitialised variables.
445 o Fixes for memory leaks, some unusual crashes and some race conditions.
446 o Fixes for smaller building problems.
447 o Updates of manuals, FAQ and other instructive documents.
449 Major changes between OpenSSL 0.9.6f and OpenSSL 0.9.6g:
451 o Important building fixes on Unix.
453 Major changes between OpenSSL 0.9.6e and OpenSSL 0.9.6f:
455 o Various important bugfixes.
457 Major changes between OpenSSL 0.9.6d and OpenSSL 0.9.6e:
459 o Important security related bugfixes.
460 o Various SSL/TLS library bugfixes.
462 Major changes between OpenSSL 0.9.6c and OpenSSL 0.9.6d:
464 o Various SSL/TLS library bugfixes.
465 o Fix DH parameter generation for 'non-standard' generators.
467 Major changes between OpenSSL 0.9.6b and OpenSSL 0.9.6c:
469 o Various SSL/TLS library bugfixes.
470 o BIGNUM library fixes.
471 o RSA OAEP and random number generation fixes.
472 o Object identifiers corrected and added.
473 o Add assembler BN routines for IA64.
474 o Add support for OS/390 Unix, UnixWare with gcc, OpenUNIX 8,
475 MIPS Linux; shared library support for Irix, HP-UX.
476 o Add crypto accelerator support for AEP, Baltimore SureWare,
477 Broadcom and Cryptographic Appliance's keyserver
478 [in 0.9.6c-engine release].
480 Major changes between OpenSSL 0.9.6a and OpenSSL 0.9.6b:
482 o Security fix: PRNG improvements.
483 o Security fix: RSA OAEP check.
484 o Security fix: Reinsert and fix countermeasure to Bleichbacher's
486 o MIPS bug fix in BIGNUM.
487 o Bug fix in "openssl enc".
488 o Bug fix in X.509 printing routine.
489 o Bug fix in DSA verification routine and DSA S/MIME verification.
490 o Bug fix to make PRNG thread-safe.
491 o Bug fix in RAND_file_name().
492 o Bug fix in compatibility mode trust settings.
493 o Bug fix in blowfish EVP.
494 o Increase default size for BIO buffering filter.
495 o Compatibility fixes in some scripts.
497 Major changes between OpenSSL 0.9.6 and OpenSSL 0.9.6a:
499 o Security fix: change behavior of OpenSSL to avoid using
500 environment variables when running as root.
501 o Security fix: check the result of RSA-CRT to reduce the
502 possibility of deducing the private key from an incorrectly
503 calculated signature.
504 o Security fix: prevent Bleichenbacher's DSA attack.
505 o Security fix: Zero the premaster secret after deriving the
506 master secret in DH ciphersuites.
507 o Reimplement SSL_peek(), which had various problems.
508 o Compatibility fix: the function des_encrypt() renamed to
509 des_encrypt1() to avoid clashes with some Unixen libc.
510 o Bug fixes for Win32, HP/UX and Irix.
511 o Bug fixes in BIGNUM, SSL, PKCS#7, PKCS#12, X.509, CONF and
512 memory checking routines.
513 o Bug fixes for RSA operations in threaded environments.
514 o Bug fixes in misc. openssl applications.
515 o Remove a few potential memory leaks.
516 o Add tighter checks of BIGNUM routines.
517 o Shared library support has been reworked for generality.
518 o More documentation.
519 o New function BN_rand_range().
520 o Add "-rand" option to openssl s_client and s_server.
522 Major changes between OpenSSL 0.9.5a and OpenSSL 0.9.6:
524 o Some documentation for BIO and SSL libraries.
525 o Enhanced chain verification using key identifiers.
526 o New sign and verify options to 'dgst' application.
527 o Support for DER and PEM encoded messages in 'smime' application.
528 o New 'rsautl' application, low level RSA utility.
530 o Bugfix for SSL rollback padding check.
531 o Support for external crypto devices [1].
532 o Enhanced EVP interface.
534 [1] The support for external crypto devices is currently a separate
535 distribution. See the file README.ENGINE.
537 Major changes between OpenSSL 0.9.5 and OpenSSL 0.9.5a:
539 o Bug fixes for Win32, SuSE Linux, NeXTSTEP and FreeBSD 2.2.8
540 o Shared library support for HPUX and Solaris-gcc
541 o Support of Linux/IA64
542 o Assembler support for Mingw32
543 o New 'rand' application
544 o New way to check for existence of algorithms from scripts
546 Major changes between OpenSSL 0.9.4 and OpenSSL 0.9.5:
548 o S/MIME support in new 'smime' command
549 o Documentation for the OpenSSL command line application
550 o Automation of 'req' application
551 o Fixes to make s_client, s_server work under Windows
552 o Support for multiple fieldnames in SPKACs
553 o New SPKAC command line utilty and associated library functions
554 o Options to allow passwords to be obtained from various sources
555 o New public key PEM format and options to handle it
556 o Many other fixes and enhancements to command line utilities
557 o Usable certificate chain verification
558 o Certificate purpose checking
559 o Certificate trust settings
560 o Support of authority information access extension
561 o Extensions in certificate requests
562 o Simplified X509 name and attribute routines
563 o Initial (incomplete) support for international character sets
564 o New DH_METHOD, DSA_METHOD and enhanced RSA_METHOD
565 o Read only memory BIOs and simplified creation function
566 o TLS/SSL protocol bugfixes: Accept TLS 'client hello' in SSL 3.0
567 record; allow fragmentation and interleaving of handshake and other
569 o TLS/SSL code now "tolerates" MS SGC
570 o Work around for Netscape client certificate hang bug
571 o RSA_NULL option that removes RSA patent code but keeps other
573 o Memory leak detection now allows applications to add extra information
574 via a per-thread stack
575 o PRNG robustness improved
577 o BIGNUM library bug fixes
578 o Faster DSA parameter generation
579 o Enhanced support for Alpha Linux
580 o Experimental MacOS support
582 Major changes between OpenSSL 0.9.3 and OpenSSL 0.9.4:
584 o Transparent support for PKCS#8 format private keys: these are used
585 by several software packages and are more secure than the standard
587 o PKCS#5 v2.0 implementation
588 o Password callbacks have a new void * argument for application data
589 o Avoid various memory leaks
590 o New pipe-like BIO that allows using the SSL library when actual I/O
591 must be handled by the application (BIO pair)
593 Major changes between OpenSSL 0.9.2b and OpenSSL 0.9.3:
594 o Lots of enhancements and cleanups to the Configuration mechanism
595 o RSA OEAP related fixes
596 o Added `openssl ca -revoke' option for revoking a certificate
597 o Source cleanups: const correctness, type-safe stacks and ASN.1 SETs
598 o Source tree cleanups: removed lots of obsolete files
599 o Thawte SXNet, certificate policies and CRL distribution points
601 o Preliminary (experimental) S/MIME support
602 o Support for ASN.1 UTF8String and VisibleString
603 o Full integration of PKCS#12 code
604 o Sparc assembler bignum implementation, optimized hash functions
605 o Option to disable selected ciphers
607 Major changes between OpenSSL 0.9.1c and OpenSSL 0.9.2b:
608 o Fixed a security hole related to session resumption
609 o Fixed RSA encryption routines for the p < q case
610 o "ALL" in cipher lists now means "everything except NULL ciphers"
611 o Support for Triple-DES CBCM cipher
612 o Support of Optimal Asymmetric Encryption Padding (OAEP) for RSA
613 o First support for new TLSv1 ciphers
614 o Added a few new BIOs (syslog BIO, reliable BIO)
615 o Extended support for DSA certificate/keys.
616 o Extended support for Certificate Signing Requests (CSR)
617 o Initial support for X.509v3 extensions
618 o Extended support for compression inside the SSL record layer
619 o Overhauled Win32 builds
620 o Cleanups and fixes to the Big Number (BN) library
621 o Support for ASN.1 GeneralizedTime
622 o Splitted ASN.1 SETs from SEQUENCEs
623 o ASN1 and PEM support for Netscape Certificate Sequences
624 o Overhauled Perl interface
625 o Lots of source tree cleanups.
626 o Lots of memory leak fixes.
629 Major changes between SSLeay 0.9.0b and OpenSSL 0.9.1c:
630 o Integration of the popular NO_RSA/NO_DSA patches
631 o Initial support for compression inside the SSL record layer
632 o Added BIO proxy and filtering functionality
633 o Extended Big Number (BN) library
634 o Added RIPE MD160 message digest
635 o Addeed support for RC2/64bit cipher
636 o Extended ASN.1 parser routines
637 o Adjustations of the source tree for CVS
638 o Support for various new platforms