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.
19 Changes between OpenSSL 0.9.6b and OpenSSL 0.9.6c:
21 o Various SSL/TLS library bugfixes.
22 o BIGNUM library fixes.
23 o RSA OAEP and random number generation fixes.
24 o Object identifiers corrected and added.
25 o Add assembler BN routines for IA64.
26 o Add support for OS/390 Unix, UnixWare with gcc, OpenUNIX 8,
27 MIPS Linux; shared library support for Irix, HP-UX.
28 o Add crypto accelerator support for AEP, Baltimore SureWare,
29 Broadcom and Cryptographic Appliance's keyserver
30 [in 0.9.6c-engine release].
32 Changes between OpenSSL 0.9.6a and OpenSSL 0.9.6b:
34 o Security fix: PRNG improvements.
35 o Security fix: RSA OAEP check.
36 o Security fix: Reinsert and fix countermeasure to Bleichbacher's
38 o MIPS bug fix in BIGNUM.
39 o Bug fix in "openssl enc".
40 o Bug fix in X.509 printing routine.
41 o Bug fix in DSA verification routine and DSA S/MIME verification.
42 o Bug fix to make PRNG thread-safe.
43 o Bug fix in RAND_file_name().
44 o Bug fix in compatibility mode trust settings.
45 o Bug fix in blowfish EVP.
46 o Increase default size for BIO buffering filter.
47 o Compatibility fixes in some scripts.
49 Major changes between OpenSSL 0.9.6 and OpenSSL 0.9.6a:
51 o Security fix: change behavior of OpenSSL to avoid using
52 environment variables when running as root.
53 o Security fix: check the result of RSA-CRT to reduce the
54 possibility of deducing the private key from an incorrectly
56 o Security fix: prevent Bleichenbacher's DSA attack.
57 o Security fix: Zero the premaster secret after deriving the
58 master secret in DH ciphersuites.
59 o Reimplement SSL_peek(), which had various problems.
60 o Compatibility fix: the function des_encrypt() renamed to
61 des_encrypt1() to avoid clashes with some Unixen libc.
62 o Bug fixes for Win32, HP/UX and Irix.
63 o Bug fixes in BIGNUM, SSL, PKCS#7, PKCS#12, X.509, CONF and
64 memory checking routines.
65 o Bug fixes for RSA operations in threaded enviroments.
66 o Bug fixes in misc. openssl applications.
67 o Remove a few potential memory leaks.
68 o Add tighter checks of BIGNUM routines.
69 o Shared library support has been reworked for generality.
71 o New function BN_rand_range().
72 o Add "-rand" option to openssl s_client and s_server.
74 Major changes between OpenSSL 0.9.5a and OpenSSL 0.9.6:
76 o Some documentation for BIO and SSL libraries.
77 o Enhanced chain verification using key identifiers.
78 o New sign and verify options to 'dgst' application.
79 o Support for DER and PEM encoded messages in 'smime' application.
80 o New 'rsautl' application, low level RSA utility.
82 o Bugfix for SSL rollback padding check.
83 o Support for external crypto devices [1].
84 o Enhanced EVP interface.
86 [1] The support for external crypto devices is currently a separate
87 distribution. See the file README.ENGINE.
89 Major changes between OpenSSL 0.9.5 and OpenSSL 0.9.5a:
91 o Bug fixes for Win32, SuSE Linux, NeXTSTEP and FreeBSD 2.2.8
92 o Shared library support for HPUX and Solaris-gcc
93 o Support of Linux/IA64
94 o Assembler support for Mingw32
95 o New 'rand' application
96 o New way to check for existence of algorithms from scripts
98 Major changes between OpenSSL 0.9.4 and OpenSSL 0.9.5:
100 o S/MIME support in new 'smime' command
101 o Documentation for the OpenSSL command line application
102 o Automation of 'req' application
103 o Fixes to make s_client, s_server work under Windows
104 o Support for multiple fieldnames in SPKACs
105 o New SPKAC command line utilty and associated library functions
106 o Options to allow passwords to be obtained from various sources
107 o New public key PEM format and options to handle it
108 o Many other fixes and enhancements to command line utilities
109 o Usable certificate chain verification
110 o Certificate purpose checking
111 o Certificate trust settings
112 o Support of authority information access extension
113 o Extensions in certificate requests
114 o Simplified X509 name and attribute routines
115 o Initial (incomplete) support for international character sets
116 o New DH_METHOD, DSA_METHOD and enhanced RSA_METHOD
117 o Read only memory BIOs and simplified creation function
118 o TLS/SSL protocol bugfixes: Accept TLS 'client hello' in SSL 3.0
119 record; allow fragmentation and interleaving of handshake and other
121 o TLS/SSL code now "tolerates" MS SGC
122 o Work around for Netscape client certificate hang bug
123 o RSA_NULL option that removes RSA patent code but keeps other
125 o Memory leak detection now allows applications to add extra information
126 via a per-thread stack
127 o PRNG robustness improved
129 o BIGNUM library bug fixes
130 o Faster DSA parameter generation
131 o Enhanced support for Alpha Linux
132 o Experimental MacOS support
134 Major changes between OpenSSL 0.9.3 and OpenSSL 0.9.4:
136 o Transparent support for PKCS#8 format private keys: these are used
137 by several software packages and are more secure than the standard
139 o PKCS#5 v2.0 implementation
140 o Password callbacks have a new void * argument for application data
141 o Avoid various memory leaks
142 o New pipe-like BIO that allows using the SSL library when actual I/O
143 must be handled by the application (BIO pair)
145 Major changes between OpenSSL 0.9.2b and OpenSSL 0.9.3:
146 o Lots of enhancements and cleanups to the Configuration mechanism
147 o RSA OEAP related fixes
148 o Added `openssl ca -revoke' option for revoking a certificate
149 o Source cleanups: const correctness, type-safe stacks and ASN.1 SETs
150 o Source tree cleanups: removed lots of obsolete files
151 o Thawte SXNet, certificate policies and CRL distribution points
153 o Preliminary (experimental) S/MIME support
154 o Support for ASN.1 UTF8String and VisibleString
155 o Full integration of PKCS#12 code
156 o Sparc assembler bignum implementation, optimized hash functions
157 o Option to disable selected ciphers
159 Major changes between OpenSSL 0.9.1c and OpenSSL 0.9.2b:
160 o Fixed a security hole related to session resumption
161 o Fixed RSA encryption routines for the p < q case
162 o "ALL" in cipher lists now means "everything except NULL ciphers"
163 o Support for Triple-DES CBCM cipher
164 o Support of Optimal Asymmetric Encryption Padding (OAEP) for RSA
165 o First support for new TLSv1 ciphers
166 o Added a few new BIOs (syslog BIO, reliable BIO)
167 o Extended support for DSA certificate/keys.
168 o Extended support for Certificate Signing Requests (CSR)
169 o Initial support for X.509v3 extensions
170 o Extended support for compression inside the SSL record layer
171 o Overhauled Win32 builds
172 o Cleanups and fixes to the Big Number (BN) library
173 o Support for ASN.1 GeneralizedTime
174 o Splitted ASN.1 SETs from SEQUENCEs
175 o ASN1 and PEM support for Netscape Certificate Sequences
176 o Overhauled Perl interface
177 o Lots of source tree cleanups.
178 o Lots of memory leak fixes.
181 Major changes between SSLeay 0.9.0b and OpenSSL 0.9.1c:
182 o Integration of the popular NO_RSA/NO_DSA patches
183 o Initial support for compression inside the SSL record layer
184 o Added BIO proxy and filtering functionality
185 o Extended Big Number (BN) library
186 o Added RIPE MD160 message digest
187 o Addeed support for RC2/64bit cipher
188 o Extended ASN.1 parser routines
189 o Adjustations of the source tree for CVS
190 o Support for various new platforms