RFC 3268 (rfc3268) - Page 2 of 7

Advanced Encryption Standard (AES) Ciphersuites for Transport Layer Security (TLS)

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RFC 3268                AES Ciphersuites for TLS               June 2002


   4. Currently the DHE ciphersuites only allow triple DES (along with
      some "export" variants which do not use a satisfactory key
      length).  At the same time the DHE ciphersuites are the only ones
      to offer forward secrecy.

   This document proposes several new ciphersuites, with the aim of
   overcoming these problems.

Cipher Usage

   The new ciphersuites proposed here are very similar to the following,
   defined in [TLS]:

   TLS_RSA_WITH_3DES_EDE_CBC_SHA
   TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA
   TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA
   TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA
   TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA
   TLS_DH_anon_WITH_3DES_EDE_CBC_SHA

   All the ciphersuites described here use the AES in cipher block
   chaining (CBC) mode.  Furthermore, they use SHA-1 [SHA-1] in an HMAC
   construction as described in section 5 of [TLS].  (Although the TLS
   ciphersuite names include the text "SHA", this actually refers to the
   modified SHA-1 version of the algorithm.)

   The ciphersuites differ in the type of certificate and key exchange
   method.  The ciphersuites defined here use the following options for
   this part of the protocol:

   CipherSuite                        Certificate type (if applicable)
                                      and key exchange algorithm

   TLS_RSA_WITH_AES_128_CBC_SHA       RSA
   TLS_DH_DSS_WITH_AES_128_CBC_SHA    DH_DSS
   TLS_DH_RSA_WITH_AES_128_CBC_SHA    DH_RSA
   TLS_DHE_DSS_WITH_AES_128_CBC_SHA   DHE_DSS
   TLS_DHE_RSA_WITH_AES_128_CBC_SHA   DHE_RSA
   TLS_DH_anon_WITH_AES_128_CBC_SHA   DH_anon

   TLS_RSA_WITH_AES_256_CBC_SHA       RSA
   TLS_DH_DSS_WITH_AES_256_CBC_SHA    DH_DSS
   TLS_DH_RSA_WITH_AES_256_CBC_SHA    DH_RSA
   TLS_DHE_DSS_WITH_AES_256_CBC_SHA   DHE_DSS
   TLS_DHE_RSA_WITH_AES_256_CBC_SHA   DHE_RSA
   TLS_DH_anon_WITH_AES_256_CBC_SHA   DH_anon





Chown                       Standards Track
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