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 0.9.6 and OpenSSL 0.9.7:
10 o New library section OCSP.
11 o Complete rewrite of ASN1 code.
12 o CRL checking in verify code and openssl utility.
13 o Extension copying in 'ca' utility.
14 o Flexible display options in 'ca' utility.
15 o Provisional support for international characters with UTF8.
16 o Support for external crypto devices ('engine') is no longer
17 a separate distribution.
18 o New elliptic curve library section.
20 Changes between OpenSSL 0.9.6b and OpenSSL 0.9.6c:
22 o Various SSL/TLS library bugfixes.
23 o BIGNUM library fixes.
24 o RSA OAEP and random number generation fixes.
25 o Object identifiers corrected and added.
26 o Add assembler BN routines for IA64.
27 o Add support for OS/390 Unix, UnixWare with gcc, OpenUNIX 8,
28 MIPS Linux; shared library support for Irix, HP-UX.
29 o Add crypto accelerator support for AEP, Baltimore SureWare,
30 Broadcom and Cryptographic Appliance's keyserver
31 [in 0.9.6c-engine release].
33 Changes between OpenSSL 0.9.6a and OpenSSL 0.9.6b:
35 o Security fix: PRNG improvements.
36 o Security fix: RSA OAEP check.
37 o Security fix: Reinsert and fix countermeasure to Bleichbacher's
39 o MIPS bug fix in BIGNUM.
40 o Bug fix in "openssl enc".
41 o Bug fix in X.509 printing routine.
42 o Bug fix in DSA verification routine and DSA S/MIME verification.
43 o Bug fix to make PRNG thread-safe.
44 o Bug fix in RAND_file_name().
45 o Bug fix in compatibility mode trust settings.
46 o Bug fix in blowfish EVP.
47 o Increase default size for BIO buffering filter.
48 o Compatibility fixes in some scripts.
50 Major changes between OpenSSL 0.9.6 and OpenSSL 0.9.6a:
52 o Security fix: change behavior of OpenSSL to avoid using
53 environment variables when running as root.
54 o Security fix: check the result of RSA-CRT to reduce the
55 possibility of deducing the private key from an incorrectly
57 o Security fix: prevent Bleichenbacher's DSA attack.
58 o Security fix: Zero the premaster secret after deriving the
59 master secret in DH ciphersuites.
60 o Reimplement SSL_peek(), which had various problems.
61 o Compatibility fix: the function des_encrypt() renamed to
62 des_encrypt1() to avoid clashes with some Unixen libc.
63 o Bug fixes for Win32, HP/UX and Irix.
64 o Bug fixes in BIGNUM, SSL, PKCS#7, PKCS#12, X.509, CONF and
65 memory checking routines.
66 o Bug fixes for RSA operations in threaded enviroments.
67 o Bug fixes in misc. openssl applications.
68 o Remove a few potential memory leaks.
69 o Add tighter checks of BIGNUM routines.
70 o Shared library support has been reworked for generality.
72 o New function BN_rand_range().
73 o Add "-rand" option to openssl s_client and s_server.
75 Major changes between OpenSSL 0.9.5a and OpenSSL 0.9.6:
77 o Some documentation for BIO and SSL libraries.
78 o Enhanced chain verification using key identifiers.
79 o New sign and verify options to 'dgst' application.
80 o Support for DER and PEM encoded messages in 'smime' application.
81 o New 'rsautl' application, low level RSA utility.
83 o Bugfix for SSL rollback padding check.
84 o Support for external crypto devices [1].
85 o Enhanced EVP interface.
87 [1] The support for external crypto devices is currently a separate
88 distribution. See the file README.ENGINE.
90 Major changes between OpenSSL 0.9.5 and OpenSSL 0.9.5a:
92 o Bug fixes for Win32, SuSE Linux, NeXTSTEP and FreeBSD 2.2.8
93 o Shared library support for HPUX and Solaris-gcc
94 o Support of Linux/IA64
95 o Assembler support for Mingw32
96 o New 'rand' application
97 o New way to check for existence of algorithms from scripts
99 Major changes between OpenSSL 0.9.4 and OpenSSL 0.9.5:
101 o S/MIME support in new 'smime' command
102 o Documentation for the OpenSSL command line application
103 o Automation of 'req' application
104 o Fixes to make s_client, s_server work under Windows
105 o Support for multiple fieldnames in SPKACs
106 o New SPKAC command line utilty and associated library functions
107 o Options to allow passwords to be obtained from various sources
108 o New public key PEM format and options to handle it
109 o Many other fixes and enhancements to command line utilities
110 o Usable certificate chain verification
111 o Certificate purpose checking
112 o Certificate trust settings
113 o Support of authority information access extension
114 o Extensions in certificate requests
115 o Simplified X509 name and attribute routines
116 o Initial (incomplete) support for international character sets
117 o New DH_METHOD, DSA_METHOD and enhanced RSA_METHOD
118 o Read only memory BIOs and simplified creation function
119 o TLS/SSL protocol bugfixes: Accept TLS 'client hello' in SSL 3.0
120 record; allow fragmentation and interleaving of handshake and other
122 o TLS/SSL code now "tolerates" MS SGC
123 o Work around for Netscape client certificate hang bug
124 o RSA_NULL option that removes RSA patent code but keeps other
126 o Memory leak detection now allows applications to add extra information
127 via a per-thread stack
128 o PRNG robustness improved
130 o BIGNUM library bug fixes
131 o Faster DSA parameter generation
132 o Enhanced support for Alpha Linux
133 o Experimental MacOS support
135 Major changes between OpenSSL 0.9.3 and OpenSSL 0.9.4:
137 o Transparent support for PKCS#8 format private keys: these are used
138 by several software packages and are more secure than the standard
140 o PKCS#5 v2.0 implementation
141 o Password callbacks have a new void * argument for application data
142 o Avoid various memory leaks
143 o New pipe-like BIO that allows using the SSL library when actual I/O
144 must be handled by the application (BIO pair)
146 Major changes between OpenSSL 0.9.2b and OpenSSL 0.9.3:
147 o Lots of enhancements and cleanups to the Configuration mechanism
148 o RSA OEAP related fixes
149 o Added `openssl ca -revoke' option for revoking a certificate
150 o Source cleanups: const correctness, type-safe stacks and ASN.1 SETs
151 o Source tree cleanups: removed lots of obsolete files
152 o Thawte SXNet, certificate policies and CRL distribution points
154 o Preliminary (experimental) S/MIME support
155 o Support for ASN.1 UTF8String and VisibleString
156 o Full integration of PKCS#12 code
157 o Sparc assembler bignum implementation, optimized hash functions
158 o Option to disable selected ciphers
160 Major changes between OpenSSL 0.9.1c and OpenSSL 0.9.2b:
161 o Fixed a security hole related to session resumption
162 o Fixed RSA encryption routines for the p < q case
163 o "ALL" in cipher lists now means "everything except NULL ciphers"
164 o Support for Triple-DES CBCM cipher
165 o Support of Optimal Asymmetric Encryption Padding (OAEP) for RSA
166 o First support for new TLSv1 ciphers
167 o Added a few new BIOs (syslog BIO, reliable BIO)
168 o Extended support for DSA certificate/keys.
169 o Extended support for Certificate Signing Requests (CSR)
170 o Initial support for X.509v3 extensions
171 o Extended support for compression inside the SSL record layer
172 o Overhauled Win32 builds
173 o Cleanups and fixes to the Big Number (BN) library
174 o Support for ASN.1 GeneralizedTime
175 o Splitted ASN.1 SETs from SEQUENCEs
176 o ASN1 and PEM support for Netscape Certificate Sequences
177 o Overhauled Perl interface
178 o Lots of source tree cleanups.
179 o Lots of memory leak fixes.
182 Major changes between SSLeay 0.9.0b and OpenSSL 0.9.1c:
183 o Integration of the popular NO_RSA/NO_DSA patches
184 o Initial support for compression inside the SSL record layer
185 o Added BIO proxy and filtering functionality
186 o Extended Big Number (BN) library
187 o Added RIPE MD160 message digest
188 o Addeed support for RC2/64bit cipher
189 o Extended ASN.1 parser routines
190 o Adjustations of the source tree for CVS
191 o Support for various new platforms