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