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