Credential Protection Ciphersuites for Transport Layer Security (TLS)
draft-hajjeh-tls-identity-protection-09

TLS Working Group                                             I. Hajjeh
Internet Draft                                               INEOVATION
                                                               M. Badra
                                                       LIMOS Laboratory
Intended status: Experimental                         November 14, 2009
Expires: May 2010

      Credential Protection Ciphersuites for Transport Layer Security
                                   (TLS)
                draft-hajjeh-tls-identity-protection-09.txt

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Hajjeh & Badra           Expires May 14, 2010                  [Page 1]
Internet-Draft  Credential Protection Ciphersuites for TLS November 2009

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Abstract

   This document defines a set of cipher suites to add client credential
   protection to the Transport Layer Security (TLS) protocol.  By
   negotiating one of those ciphersuites, the TLS clients will be able
   to determine for themselves when, how, to what extent and for what
   purpose information about them is communicated to others.  The
   ciphersuites defined in this document can be used only when public
   key certificates are used in the client authentication process.

Table of Contents

   1. Introduction...................................................3
      1.1. Conventions used in this document.........................5
   2. TLS credential protection overview.............................5
      2.1. Certificate and CertificateVerify protection..............6
         2.1.1. Stream cipher encryption.............................6
         2.1.2. Block cipher encryption..............................7
      2.2. Key derivation............................................7
      2.3. Structure of Certificate and CertificateVerify............8
         2.3.1. Certificate structure................................9
            2.3.1.1. Case TLS version 1.2............................9
            2.3.1.2. Case TLS version 1.1...........................10
            2.3.1.3. Case TLS version 1.0...........................11
         2.3.2. CertificateVerify structure.........................11
            2.3.2.1. Case TLS version 1.2...........................11
            2.3.2.2. Case TLS version 1.1...........................12
            2.3.2.3. Case TLS version 1.0...........................13
      2.4. Message Flow.............................................14
      2.5. New ciphersuites.........................................14
   3. CP_RSA Key Exchange Algorithm.................................15
   4. CP_DHE Key Exchange Algorithm.................................15
   5. CP_ECDHE Key Exchange Algorithm...............................16
   6. Security Considerations.......................................16