NEWS ==== 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 0.9.6 and OpenSSL 0.9.7: o New library section OCSP. o Complete haul-over of the ASN.1 library section. o Support for external crypto devices ('engine') is no longer a separate distribution. Changes between OpenSSL 0.9.6b and OpenSSL 0.9.6c: o Various SSL/TLS library bugfixes. o BIGNUM library fixes. o Fix potential multi-threading race conditions in the PRNG. Changes between OpenSSL 0.9.6a and OpenSSL 0.9.6b: o Security fix: PRNG improvements. o Security fix: RSA OAEP check. o Security fix: Reinsert and fix countermeasure to Bleichbacher's attack. o MIPS bug fix in BIGNUM. o Bug fix in "openssl enc". o Bug fix in X.509 printing routine. o Bug fix in DSA verification routine and DSA S/MIME verification. o Bug fix to make PRNG thread-safe. o Bug fix in RAND_file_name(). o Bug fix in compatibility mode trust settings. o Bug fix in blowfish EVP. o Increase default size for BIO buffering filter. o Compatibility fixes in some scripts. Major changes between OpenSSL 0.9.6 and OpenSSL 0.9.6a: o Security fix: change behavior of OpenSSL to avoid using environment variables when running as root. o Security fix: check the result of RSA-CRT to reduce the possibility of deducing the private key from an incorrectly calculated signature. o Security fix: prevent Bleichenbacher's DSA attack. o Security fix: Zero the premaster secret after deriving the master secret in DH ciphersuites. o Reimplement SSL_peek(), which had various problems. o Compatibility fix: the function des_encrypt() renamed to des_encrypt1() to avoid clashes with some Unixen libc. o Bug fixes for Win32, HP/UX and Irix. o Bug fixes in BIGNUM, SSL, PKCS#7, PKCS#12, X.509, CONF and memory checking routines. o Bug fixes for RSA operations in threaded enviroments. o Bug fixes in misc. openssl applications. o Remove a few potential memory leaks. o Add tighter checks of BIGNUM routines. o Shared library support has been reworked for generality. o More documentation. o New function BN_rand_range(). o Add "-rand" option to openssl s_client and s_server. 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 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 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 o Fixed RSA encryption routines for the p < q case o "ALL" in cipher lists now means "everything except NULL ciphers" o Support for Triple-DES CBCM cipher o Support of Optimal Asymmetric Encryption Padding (OAEP) for RSA o First support for new TLSv1 ciphers o Added a few new BIOs (syslog BIO, reliable BIO) o Extended support for DSA certificate/keys. o Extended support for Certificate Signing Requests (CSR) o Initial support for X.509v3 extensions o Extended support for compression inside the SSL record layer o Overhauled Win32 builds o Cleanups and fixes to the Big Number (BN) library o Support for ASN.1 GeneralizedTime o Splitted ASN.1 SETs from SEQUENCEs o ASN1 and PEM support for Netscape Certificate Sequences o Overhauled Perl interface o Lots of source tree cleanups. o Lots of memory leak fixes. o Lots of bug fixes. Major changes between SSLeay 0.9.0b and OpenSSL 0.9.1c: o Integration of the popular NO_RSA/NO_DSA patches o Initial support for compression inside the SSL record layer o Added BIO proxy and filtering functionality o Extended Big Number (BN) library o Added RIPE MD160 message digest o Addeed support for RC2/64bit cipher o Extended ASN.1 parser routines o Adjustations of the source tree for CVS o Support for various new platforms