NEWS

   1
   2   NEWS
   3   ====
   4
   5   This file gives a brief overview of the major changes between each OpenSSL
   6   release. For more details please read the CHANGES file.
   7
   8   Major changes between OpenSSL 0.9.6 and OpenSSL 0.9.7:
   9
  10       o New library section OCSP.
  11       o Complete rewrite of ASN1 code.
  12       o CRL checking in verify code and openssl utility.
  13       o Extension copying in 'ca' utility.
  14       o Flexible display options in 'ca' utility.
  15       o Provisional support for international characters with UTF8.
  16       o Support for external crypto devices ('engine') is no longer
  17         a separate distribution.
  18       o New elliptic curve library section.
  19       o New AES (Rijndael) library section.
  20       o Change DES API to clean up the namespace (some applications link also
  21         against libdes providing similar functions having the same name).
  22         Provide macros for backward compatibility (will be removed in the
  23         future).
  24       o Unifiy handling of cryptographic algorithms (software and
  25         engine) to be available via EVP routines for asymmetric and
  26         symmetric ciphers.
  27       o NCONF: new configuration handling routines.
  28       o Change API to use more 'const' modifiers to improve error checking
  29         and help optimizers.
  30       o Finally remove references to RSAref.
  31       o Reworked parts of the BIGNUM code.
  32       o Support for new engines: Broadcom ubsec, Accelerated Encryption
  33         Processing, IBM 4758.
  34       o Extended and corrected OID (object identifier) table.
  35       o PRNG: query at more locations for a random device, automatic query for
  36         EGD style random sources at several locations.
  37       o SSL/TLS: allow optional cipher choice according to server's preference.
  38       o SSL/TLS: allow server to explicitly set new session ids.
  39       o SSL/TLS: support Kerberos cipher suites (RFC2712).
  40       o SSL/TLS: allow more precise control of renegotiations and sessions.
  41       o SSL/TLS: add callback to retrieve SSL/TLS messages.
  42       o SSL/TLS: add draft AES ciphersuites (disabled unless explicitly requested).
  43
  44   Major changes between OpenSSL 0.9.6c and OpenSSL 0.9.6d:
  45
  46       o Various SSL/TLS library bugfixes.
  47       o Fix DH parameter generation for 'non-standard' generators.
  48
  49   Major changes between OpenSSL 0.9.6b and OpenSSL 0.9.6c:
  50
  51       o Various SSL/TLS library bugfixes.
  52       o BIGNUM library fixes.
  53       o RSA OAEP and random number generation fixes.
  54       o Object identifiers corrected and added.
  55       o Add assembler BN routines for IA64.
  56       o Add support for OS/390 Unix, UnixWare with gcc, OpenUNIX 8,
  57         MIPS Linux; shared library support for Irix, HP-UX.
  58       o Add crypto accelerator support for AEP, Baltimore SureWare,
  59         Broadcom and Cryptographic Appliance's keyserver
  60         [in 0.9.6c-engine release].
  61
  62   Major changes between OpenSSL 0.9.6a and OpenSSL 0.9.6b:
  63
  64       o Security fix: PRNG improvements.
  65       o Security fix: RSA OAEP check.
  66       o Security fix: Reinsert and fix countermeasure to Bleichbacher's
  67         attack.
  68       o MIPS bug fix in BIGNUM.
  69       o Bug fix in "openssl enc".
  70       o Bug fix in X.509 printing routine.
  71       o Bug fix in DSA verification routine and DSA S/MIME verification.
  72       o Bug fix to make PRNG thread-safe.
  73       o Bug fix in RAND_file_name().
  74       o Bug fix in compatibility mode trust settings.
  75       o Bug fix in blowfish EVP.
  76       o Increase default size for BIO buffering filter.
  77       o Compatibility fixes in some scripts.
  78
  79   Major changes between OpenSSL 0.9.6 and OpenSSL 0.9.6a:
  80
  81       o Security fix: change behavior of OpenSSL to avoid using
  82         environment variables when running as root.
  83       o Security fix: check the result of RSA-CRT to reduce the
  84         possibility of deducing the private key from an incorrectly
  85         calculated signature.
  86       o Security fix: prevent Bleichenbacher's DSA attack.
  87       o Security fix: Zero the premaster secret after deriving the
  88         master secret in DH ciphersuites.
  89       o Reimplement SSL_peek(), which had various problems.
  90       o Compatibility fix: the function des_encrypt() renamed to
  91         des_encrypt1() to avoid clashes with some Unixen libc.
  92       o Bug fixes for Win32, HP/UX and Irix.
  93       o Bug fixes in BIGNUM, SSL, PKCS#7, PKCS#12, X.509, CONF and
  94         memory checking routines.
  95       o Bug fixes for RSA operations in threaded enviroments.
  96       o Bug fixes in misc. openssl applications.
  97       o Remove a few potential memory leaks.
  98       o Add tighter checks of BIGNUM routines.
  99       o Shared library support has been reworked for generality.
 100       o More documentation.
 101       o New function BN_rand_range().
 102       o Add "-rand" option to openssl s_client and s_server.
 103
 104   Major changes between OpenSSL 0.9.5a and OpenSSL 0.9.6:
 105
 106       o Some documentation for BIO and SSL libraries.
 107       o Enhanced chain verification using key identifiers.
 108       o New sign and verify options to 'dgst' application.
 109       o Support for DER and PEM encoded messages in 'smime' application.
 110       o New 'rsautl' application, low level RSA utility.
 111       o MD4 now included.
 112       o Bugfix for SSL rollback padding check.
 113       o Support for external crypto devices [1].
 114       o Enhanced EVP interface.
 115
 116     [1] The support for external crypto devices is currently a separate
 117         distribution.  See the file README.ENGINE.
 118
 119   Major changes between OpenSSL 0.9.5 and OpenSSL 0.9.5a:
 120
 121       o Bug fixes for Win32, SuSE Linux, NeXTSTEP and FreeBSD 2.2.8
 122       o Shared library support for HPUX and Solaris-gcc
 123       o Support of Linux/IA64
 124       o Assembler support for Mingw32
 125       o New 'rand' application
 126       o New way to check for existence of algorithms from scripts
 127
 128   Major changes between OpenSSL 0.9.4 and OpenSSL 0.9.5:
 129
 130       o S/MIME support in new 'smime' command
 131       o Documentation for the OpenSSL command line application
 132       o Automation of 'req' application
 133       o Fixes to make s_client, s_server work under Windows
 134       o Support for multiple fieldnames in SPKACs
 135       o New SPKAC command line utilty and associated library functions
 136       o Options to allow passwords to be obtained from various sources
 137       o New public key PEM format and options to handle it
 138       o Many other fixes and enhancements to command line utilities
 139       o Usable certificate chain verification
 140       o Certificate purpose checking
 141       o Certificate trust settings
 142       o Support of authority information access extension
 143       o Extensions in certificate requests
 144       o Simplified X509 name and attribute routines
 145       o Initial (incomplete) support for international character sets
 146       o New DH_METHOD, DSA_METHOD and enhanced RSA_METHOD
 147       o Read only memory BIOs and simplified creation function
 148       o TLS/SSL protocol bugfixes: Accept TLS 'client hello' in SSL 3.0
 149         record; allow fragmentation and interleaving of handshake and other
 150         data
 151       o TLS/SSL code now "tolerates" MS SGC
 152       o Work around for Netscape client certificate hang bug
 153       o RSA_NULL option that removes RSA patent code but keeps other
 154         RSA functionality
 155       o Memory leak detection now allows applications to add extra information
 156         via a per-thread stack
 157       o PRNG robustness improved
 158       o EGD support
 159       o BIGNUM library bug fixes
 160       o Faster DSA parameter generation
 161       o Enhanced support for Alpha Linux
 162       o Experimental MacOS support
 163
 164   Major changes between OpenSSL 0.9.3 and OpenSSL 0.9.4:
 165
 166       o Transparent support for PKCS#8 format private keys: these are used
 167         by several software packages and are more secure than the standard
 168         form
 169       o PKCS#5 v2.0 implementation
 170       o Password callbacks have a new void * argument for application data
 171       o Avoid various memory leaks
 172       o New pipe-like BIO that allows using the SSL library when actual I/O
 173         must be handled by the application (BIO pair)
 174
 175   Major changes between OpenSSL 0.9.2b and OpenSSL 0.9.3:
 176       o Lots of enhancements and cleanups to the Configuration mechanism
 177       o RSA OEAP related fixes
 178       o Added `openssl ca -revoke' option for revoking a certificate
 179       o Source cleanups: const correctness, type-safe stacks and ASN.1 SETs
 180       o Source tree cleanups: removed lots of obsolete files
 181       o Thawte SXNet, certificate policies and CRL distribution points
 182         extension support
 183       o Preliminary (experimental) S/MIME support
 184       o Support for ASN.1 UTF8String and VisibleString
 185       o Full integration of PKCS#12 code
 186       o Sparc assembler bignum implementation, optimized hash functions
 187       o Option to disable selected ciphers
 188
 189   Major changes between OpenSSL 0.9.1c and OpenSSL 0.9.2b:
 190       o Fixed a security hole related to session resumption
 191       o Fixed RSA encryption routines for the p < q case
 192       o "ALL" in cipher lists now means "everything except NULL ciphers"
 193       o Support for Triple-DES CBCM cipher
 194       o Support of Optimal Asymmetric Encryption Padding (OAEP) for RSA
 195       o First support for new TLSv1 ciphers
 196       o Added a few new BIOs (syslog BIO, reliable BIO)
 197       o Extended support for DSA certificate/keys.
 198       o Extended support for Certificate Signing Requests (CSR)
 199       o Initial support for X.509v3 extensions
 200       o Extended support for compression inside the SSL record layer
 201       o Overhauled Win32 builds
 202       o Cleanups and fixes to the Big Number (BN) library
 203       o Support for ASN.1 GeneralizedTime
 204       o Splitted ASN.1 SETs from SEQUENCEs
 205       o ASN1 and PEM support for Netscape Certificate Sequences
 206       o Overhauled Perl interface
 207       o Lots of source tree cleanups.
 208       o Lots of memory leak fixes.
 209       o Lots of bug fixes.
 210
 211   Major changes between SSLeay 0.9.0b and OpenSSL 0.9.1c:
 212       o Integration of the popular NO_RSA/NO_DSA patches
 213       o Initial support for compression inside the SSL record layer
 214       o Added BIO proxy and filtering functionality
 215       o Extended Big Number (BN) library
 216       o Added RIPE MD160 message digest
 217       o Addeed support for RC2/64bit cipher
 218       o Extended ASN.1 parser routines
 219       o Adjustations of the source tree for CVS
 220       o Support for various new platforms
 221