This file gives a brief overview of the major changes between each OpenSSL
release. For more details please read the CHANGES file.
+ Major changes between OpenSSL 0.9.5a and OpenSSL 0.9.6:
+
+ o Some documentation for BIO and SSL libraries.
+ o Enhanced chain verification using key identifiers.
+ o New sign and verify options to 'dgst' application.
+ o Support for DER and PEM encoded messages in 'smime' application.
+ o New 'rsautl' application, low level RSA utility.
+ o MD4 now included.
+ o Bugfix for SSL rollback padding check.
+ o Support for external crypto devices [1].
+ o Enhanced EVP interface.
+
+ [1] The support for external crypto devices is currently a separate
+ distribution. See the file README.ENGINE.
+
+ Major changes between OpenSSL 0.9.5 and OpenSSL 0.9.5a:
+
+ o Bug fixes for Win32, SuSE Linux, NeXTSTEP and FreeBSD 2.2.8
+ o Shared library support for HPUX and Solaris-gcc
+ o Support of Linux/IA64
+ o Assembler support for Mingw32
+ o New 'rand' application
+ o New way to check for existence of algorithms from scripts
+
+ Major changes between OpenSSL 0.9.4 and OpenSSL 0.9.5:
+
+ o S/MIME support in new 'smime' command
+ o Documentation for the OpenSSL command line application
+ o Automation of 'req' application
+ o Fixes to make s_client, s_server work under Windows
+ o Support for multiple fieldnames in SPKACs
+ o New SPKAC command line utilty and associated library functions
+ o Options to allow passwords to be obtained from various sources
+ o New public key PEM format and options to handle it
+ o Many other fixes and enhancements to command line utilities
+ o Usable certificate chain verification
+ o Certificate purpose checking
+ o Certificate trust settings
+ o Support of authority information access extension
+ o Extensions in certificate requests
+ o Simplified X509 name and attribute routines
+ o Initial (incomplete) support for international character sets
+ o New DH_METHOD, DSA_METHOD and enhanced RSA_METHOD
+ o Read only memory BIOs and simplified creation function
+ o TLS/SSL protocol bugfixes: Accept TLS 'client hello' in SSL 3.0
+ record; allow fragmentation and interleaving of handshake and other
+ data
+ o TLS/SSL code now "tolerates" MS SGC
+ o Work around for Netscape client certificate hang bug
+ o RSA_NULL option that removes RSA patent code but keeps other
+ RSA functionality
+ o Memory leak detection now allows applications to add extra information
+ via a per-thread stack
+ o PRNG robustness improved
+ o EGD support
+ o BIGNUM library bug fixes
+ o Faster DSA parameter generation
+ o Enhanced support for Alpha Linux
+ o Experimental MacOS support
+
+ Major changes between OpenSSL 0.9.3 and OpenSSL 0.9.4:
+
+ o Transparent support for PKCS#8 format private keys: these are used
+ by several software packages and are more secure than the standard
+ form
+ o PKCS#5 v2.0 implementation
+ o Password callbacks have a new void * argument for application data
+ o Avoid various memory leaks
+ o New pipe-like BIO that allows using the SSL library when actual I/O
+ must be handled by the application (BIO pair)
+
Major changes between OpenSSL 0.9.2b and OpenSSL 0.9.3:
o Lots of enhancements and cleanups to the Configuration mechanism
o RSA OEAP related fixes
- o Support for PKCS#5 v2.0 ASN1 PBES2 structures
o Added `openssl ca -revoke' option for revoking a certificate
o Source cleanups: const correctness, type-safe stacks and ASN.1 SETs
o Source tree cleanups: removed lots of obsolete files
- o Support for Thawte SXNet extensions
- o Full integration of PKCS#12 support
+ o Thawte SXNet, certificate policies and CRL distribution points
+ extension support
+ o Preliminary (experimental) S/MIME support
+ o Support for ASN.1 UTF8String and VisibleString
+ o Full integration of PKCS#12 code
+ o Sparc assembler bignum implementation, optimized hash functions
+ o Option to disable selected ciphers
Major changes between OpenSSL 0.9.1c and OpenSSL 0.9.2b:
o Fixed a security hole related to session resumption