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 0.9.7b and OpenSSL 0.9.7c:
10 o Security: fix various ASN1 parsing bugs.
11 o New -ignore_err option to OCSP utility.
12 o Various interop and bug fixes in S/MIME code.
13 o SSL/TLS protocol fix for unrequested client certificates.
15 Major changes between OpenSSL 0.9.7a and OpenSSL 0.9.7b:
17 o Security: counter the Klima-Pokorny-Rosa extension of
19 o Security: make RSA blinding default.
20 o Configuration: Irix fixes, AIX fixes, better mingw support.
21 o Support for new platforms: linux-ia64-ecc.
22 o Build: shared library support fixes.
23 o ASN.1: treat domainComponent correctly.
24 o Documentation: fixes and additions.
26 Major changes between OpenSSL 0.9.7 and OpenSSL 0.9.7a:
28 o Security: Important security related bugfixes.
29 o Enhanced compatibility with MIT Kerberos.
30 o Can be built without the ENGINE framework.
31 o IA32 assembler enhancements.
32 o Support for new platforms: FreeBSD/IA64 and FreeBSD/Sparc64.
33 o Configuration: the no-err option now works properly.
34 o SSL/TLS: now handles manual certificate chain building.
35 o SSL/TLS: certain session ID malfunctions corrected.
37 Major changes between OpenSSL 0.9.6 and OpenSSL 0.9.7:
39 o New library section OCSP.
40 o Complete rewrite of ASN1 code.
41 o CRL checking in verify code and openssl utility.
42 o Extension copying in 'ca' utility.
43 o Flexible display options in 'ca' utility.
44 o Provisional support for international characters with UTF8.
45 o Support for external crypto devices ('engine') is no longer
46 a separate distribution.
47 o New elliptic curve library section.
48 o New AES (Rijndael) library section.
49 o Support for new platforms: Windows CE, Tandem OSS, A/UX, AIX 64-bit,
50 Linux x86_64, Linux 64-bit on Sparc v9
51 o Extended support for some platforms: VxWorks
52 o Enhanced support for shared libraries.
53 o Now only builds PIC code when shared library support is requested.
54 o Support for pkg-config.
55 o Lots of new manuals.
56 o Makes symbolic links to or copies of manuals to cover all described
58 o Change DES API to clean up the namespace (some applications link also
59 against libdes providing similar functions having the same name).
60 Provide macros for backward compatibility (will be removed in the
62 o Unify handling of cryptographic algorithms (software and engine)
63 to be available via EVP routines for asymmetric and symmetric ciphers.
64 o NCONF: new configuration handling routines.
65 o Change API to use more 'const' modifiers to improve error checking
67 o Finally remove references to RSAref.
68 o Reworked parts of the BIGNUM code.
69 o Support for new engines: Broadcom ubsec, Accelerated Encryption
71 o A few new engines added in the demos area.
72 o Extended and corrected OID (object identifier) table.
73 o PRNG: query at more locations for a random device, automatic query for
74 EGD style random sources at several locations.
75 o SSL/TLS: allow optional cipher choice according to server's preference.
76 o SSL/TLS: allow server to explicitly set new session ids.
77 o SSL/TLS: support Kerberos cipher suites (RFC2712).
78 Only supports MIT Kerberos for now.
79 o SSL/TLS: allow more precise control of renegotiations and sessions.
80 o SSL/TLS: add callback to retrieve SSL/TLS messages.
81 o SSL/TLS: support AES cipher suites (RFC3268).
83 Major changes between OpenSSL 0.9.6j and OpenSSL 0.9.6k:
85 o Security: fix various ASN1 parsing bugs.
86 o SSL/TLS protocol fix for unrequested client certificates.
88 Major changes between OpenSSL 0.9.6i and OpenSSL 0.9.6j:
90 o Security: counter the Klima-Pokorny-Rosa extension of
92 o Security: make RSA blinding default.
93 o Build: shared library support fixes.
95 Major changes between OpenSSL 0.9.6h and OpenSSL 0.9.6i:
97 o Important security related bugfixes.
99 Major changes between OpenSSL 0.9.6g and OpenSSL 0.9.6h:
101 o New configuration targets for Tandem OSS and A/UX.
102 o New OIDs for Microsoft attributes.
103 o Better handling of SSL session caching.
104 o Better comparison of distinguished names.
105 o Better handling of shared libraries in a mixed GNU/non-GNU environment.
106 o Support assembler code with Borland C.
107 o Fixes for length problems.
108 o Fixes for uninitialised variables.
109 o Fixes for memory leaks, some unusual crashes and some race conditions.
110 o Fixes for smaller building problems.
111 o Updates of manuals, FAQ and other instructive documents.
113 Major changes between OpenSSL 0.9.6f and OpenSSL 0.9.6g:
115 o Important building fixes on Unix.
117 Major changes between OpenSSL 0.9.6e and OpenSSL 0.9.6f:
119 o Various important bugfixes.
121 Major changes between OpenSSL 0.9.6d and OpenSSL 0.9.6e:
123 o Important security related bugfixes.
124 o Various SSL/TLS library bugfixes.
126 Major changes between OpenSSL 0.9.6c and OpenSSL 0.9.6d:
128 o Various SSL/TLS library bugfixes.
129 o Fix DH parameter generation for 'non-standard' generators.
131 Major changes between OpenSSL 0.9.6b and OpenSSL 0.9.6c:
133 o Various SSL/TLS library bugfixes.
134 o BIGNUM library fixes.
135 o RSA OAEP and random number generation fixes.
136 o Object identifiers corrected and added.
137 o Add assembler BN routines for IA64.
138 o Add support for OS/390 Unix, UnixWare with gcc, OpenUNIX 8,
139 MIPS Linux; shared library support for Irix, HP-UX.
140 o Add crypto accelerator support for AEP, Baltimore SureWare,
141 Broadcom and Cryptographic Appliance's keyserver
142 [in 0.9.6c-engine release].
144 Major changes between OpenSSL 0.9.6a and OpenSSL 0.9.6b:
146 o Security fix: PRNG improvements.
147 o Security fix: RSA OAEP check.
148 o Security fix: Reinsert and fix countermeasure to Bleichbacher's
150 o MIPS bug fix in BIGNUM.
151 o Bug fix in "openssl enc".
152 o Bug fix in X.509 printing routine.
153 o Bug fix in DSA verification routine and DSA S/MIME verification.
154 o Bug fix to make PRNG thread-safe.
155 o Bug fix in RAND_file_name().
156 o Bug fix in compatibility mode trust settings.
157 o Bug fix in blowfish EVP.
158 o Increase default size for BIO buffering filter.
159 o Compatibility fixes in some scripts.
161 Major changes between OpenSSL 0.9.6 and OpenSSL 0.9.6a:
163 o Security fix: change behavior of OpenSSL to avoid using
164 environment variables when running as root.
165 o Security fix: check the result of RSA-CRT to reduce the
166 possibility of deducing the private key from an incorrectly
167 calculated signature.
168 o Security fix: prevent Bleichenbacher's DSA attack.
169 o Security fix: Zero the premaster secret after deriving the
170 master secret in DH ciphersuites.
171 o Reimplement SSL_peek(), which had various problems.
172 o Compatibility fix: the function des_encrypt() renamed to
173 des_encrypt1() to avoid clashes with some Unixen libc.
174 o Bug fixes for Win32, HP/UX and Irix.
175 o Bug fixes in BIGNUM, SSL, PKCS#7, PKCS#12, X.509, CONF and
176 memory checking routines.
177 o Bug fixes for RSA operations in threaded environments.
178 o Bug fixes in misc. openssl applications.
179 o Remove a few potential memory leaks.
180 o Add tighter checks of BIGNUM routines.
181 o Shared library support has been reworked for generality.
182 o More documentation.
183 o New function BN_rand_range().
184 o Add "-rand" option to openssl s_client and s_server.
186 Major changes between OpenSSL 0.9.5a and OpenSSL 0.9.6:
188 o Some documentation for BIO and SSL libraries.
189 o Enhanced chain verification using key identifiers.
190 o New sign and verify options to 'dgst' application.
191 o Support for DER and PEM encoded messages in 'smime' application.
192 o New 'rsautl' application, low level RSA utility.
194 o Bugfix for SSL rollback padding check.
195 o Support for external crypto devices [1].
196 o Enhanced EVP interface.
198 [1] The support for external crypto devices is currently a separate
199 distribution. See the file README.ENGINE.
201 Major changes between OpenSSL 0.9.5 and OpenSSL 0.9.5a:
203 o Bug fixes for Win32, SuSE Linux, NeXTSTEP and FreeBSD 2.2.8
204 o Shared library support for HPUX and Solaris-gcc
205 o Support of Linux/IA64
206 o Assembler support for Mingw32
207 o New 'rand' application
208 o New way to check for existence of algorithms from scripts
210 Major changes between OpenSSL 0.9.4 and OpenSSL 0.9.5:
212 o S/MIME support in new 'smime' command
213 o Documentation for the OpenSSL command line application
214 o Automation of 'req' application
215 o Fixes to make s_client, s_server work under Windows
216 o Support for multiple fieldnames in SPKACs
217 o New SPKAC command line utilty and associated library functions
218 o Options to allow passwords to be obtained from various sources
219 o New public key PEM format and options to handle it
220 o Many other fixes and enhancements to command line utilities
221 o Usable certificate chain verification
222 o Certificate purpose checking
223 o Certificate trust settings
224 o Support of authority information access extension
225 o Extensions in certificate requests
226 o Simplified X509 name and attribute routines
227 o Initial (incomplete) support for international character sets
228 o New DH_METHOD, DSA_METHOD and enhanced RSA_METHOD
229 o Read only memory BIOs and simplified creation function
230 o TLS/SSL protocol bugfixes: Accept TLS 'client hello' in SSL 3.0
231 record; allow fragmentation and interleaving of handshake and other
233 o TLS/SSL code now "tolerates" MS SGC
234 o Work around for Netscape client certificate hang bug
235 o RSA_NULL option that removes RSA patent code but keeps other
237 o Memory leak detection now allows applications to add extra information
238 via a per-thread stack
239 o PRNG robustness improved
241 o BIGNUM library bug fixes
242 o Faster DSA parameter generation
243 o Enhanced support for Alpha Linux
244 o Experimental MacOS support
246 Major changes between OpenSSL 0.9.3 and OpenSSL 0.9.4:
248 o Transparent support for PKCS#8 format private keys: these are used
249 by several software packages and are more secure than the standard
251 o PKCS#5 v2.0 implementation
252 o Password callbacks have a new void * argument for application data
253 o Avoid various memory leaks
254 o New pipe-like BIO that allows using the SSL library when actual I/O
255 must be handled by the application (BIO pair)
257 Major changes between OpenSSL 0.9.2b and OpenSSL 0.9.3:
258 o Lots of enhancements and cleanups to the Configuration mechanism
259 o RSA OEAP related fixes
260 o Added `openssl ca -revoke' option for revoking a certificate
261 o Source cleanups: const correctness, type-safe stacks and ASN.1 SETs
262 o Source tree cleanups: removed lots of obsolete files
263 o Thawte SXNet, certificate policies and CRL distribution points
265 o Preliminary (experimental) S/MIME support
266 o Support for ASN.1 UTF8String and VisibleString
267 o Full integration of PKCS#12 code
268 o Sparc assembler bignum implementation, optimized hash functions
269 o Option to disable selected ciphers
271 Major changes between OpenSSL 0.9.1c and OpenSSL 0.9.2b:
272 o Fixed a security hole related to session resumption
273 o Fixed RSA encryption routines for the p < q case
274 o "ALL" in cipher lists now means "everything except NULL ciphers"
275 o Support for Triple-DES CBCM cipher
276 o Support of Optimal Asymmetric Encryption Padding (OAEP) for RSA
277 o First support for new TLSv1 ciphers
278 o Added a few new BIOs (syslog BIO, reliable BIO)
279 o Extended support for DSA certificate/keys.
280 o Extended support for Certificate Signing Requests (CSR)
281 o Initial support for X.509v3 extensions
282 o Extended support for compression inside the SSL record layer
283 o Overhauled Win32 builds
284 o Cleanups and fixes to the Big Number (BN) library
285 o Support for ASN.1 GeneralizedTime
286 o Splitted ASN.1 SETs from SEQUENCEs
287 o ASN1 and PEM support for Netscape Certificate Sequences
288 o Overhauled Perl interface
289 o Lots of source tree cleanups.
290 o Lots of memory leak fixes.
293 Major changes between SSLeay 0.9.0b and OpenSSL 0.9.1c:
294 o Integration of the popular NO_RSA/NO_DSA patches
295 o Initial support for compression inside the SSL record layer
296 o Added BIO proxy and filtering functionality
297 o Extended Big Number (BN) library
298 o Added RIPE MD160 message digest
299 o Addeed support for RC2/64bit cipher
300 o Extended ASN.1 parser routines
301 o Adjustations of the source tree for CVS
302 o Support for various new platforms