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