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