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