Synchronize CHANGES between 0.9.8 and HEAD.

2025-03-31 20:10:45 +08:00 · 2007-10-13 10:55:30 +00:00 · 2007-10-13 10:55:30 +00:00 · 0d89e45690
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 Changes between 0.9.8e and 0.9.8f  [11 Oct 2007]

+  *) DTLS Handshake overhaul. There were longstanding issues with
+     OpenSSL DTLS implementation, which were making it impossible for
+     RFC 4347 compliant client to communicate with OpenSSL server.
+     Unfortunately just fixing these incompatibilities would "cut off"
+     pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
+     server keeps tolerating non RFC compliant syntax. The opposite is
+     not true, 0.9.8f client can not communicate with earlier server.
+     This update even addresses CVE-2007-4995.
+     [Andy Polyakov]
+
+  *) Changes to avoid need for function casts in OpenSSL: some compilers
+     (gcc 4.2 and later) reject their use.
+     [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
+      Steve Henson]
+  
+  *) Add RFC4507 support to OpenSSL. This includes the corrections in
+     RFC4507bis. The encrypted ticket format is an encrypted encoded
+     SSL_SESSION structure, that way new session features are automatically
+     supported.
+
+     If a client application caches session in an SSL_SESSION structure
+     support is transparent because tickets are now stored in the encoded
+     SSL_SESSION.
+     
+     The SSL_CTX structure automatically generates keys for ticket
+     protection in servers so again support should be possible
+     with no application modification.
+
+     If a client or server wishes to disable RFC4507 support then the option
+     SSL_OP_NO_TICKET can be set.
+
+     Add a TLS extension debugging callback to allow the contents of any client
+     or server extensions to be examined.
+
+     This work was sponsored by Google.
+     [Steve Henson]
+
+  *) Add initial support for TLS extensions, specifically for the server_name
+     extension so far.  The SSL_SESSION, SSL_CTX, and SSL data structures now
+     have new members for a host name.  The SSL data structure has an
+     additional member SSL_CTX *initial_ctx so that new sessions can be
+     stored in that context to allow for session resumption, even after the
+     SSL has been switched to a new SSL_CTX in reaction to a client's
+     server_name extension.
+
+     New functions (subject to change):
+
+         SSL_get_servername()
+         SSL_get_servername_type()
+         SSL_set_SSL_CTX()
+
+     New CTRL codes and macros (subject to change):
+
+         SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
+                                 - SSL_CTX_set_tlsext_servername_callback()
+         SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
+                                      - SSL_CTX_set_tlsext_servername_arg()
+         SSL_CTRL_SET_TLSEXT_HOSTNAME           - SSL_set_tlsext_host_name()
+
+     openssl s_client has a new '-servername ...' option.
+
+     openssl s_server has new options '-servername_host ...', '-cert2 ...',
+     '-key2 ...', '-servername_fatal' (subject to change).  This allows
+     testing the HostName extension for a specific single host name ('-cert'
+     and '-key' remain fallbacks for handshakes without HostName
+     negotiation).  If the unrecogninzed_name alert has to be sent, this by
+     default is a warning; it becomes fatal with the '-servername_fatal'
+     option.
+
+     [Peter Sylvester,  Remy Allais, Christophe Renou, Steve Henson]
+
+  *) Add AES and SSE2 assembly language support to VC++ build.
+     [Steve Henson]
+
  *) Mitigate attack on final subtraction in Montgomery reduction.
     [Andy Polyakov]