AES-CCM Cipher Suites for TLS
draft-mcgrew-tls-aes-ccm-03

The information below is for an old version of the document
Document Type Active Internet-Draft (individual in sec area)
Last updated 2012-03-15 (latest revision 2012-02-13)
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Intended RFC status Proposed Standard
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IESG note Joe Salowey <jsalowey@cisco.com> is the Document Shepherd.
Send notices to mcgrew@cisco.com, dbailey@rsa.com, draft-mcgrew-tls-aes-ccm@tools.ietf.org
TLS Working Group                                              D. McGrew
Internet-Draft                                             Cisco Systems
Intended status: Standards Track                               D. Bailey
Expires: August 16, 2012               RSA, the Security Division of EMC
                                                       February 13, 2012

                     AES-CCM Cipher Suites for TLS
                      draft-mcgrew-tls-aes-ccm-03

Abstract

   This memo describes the use of the Advanced Encryption Standard (AES)
   in the Counter and CBC-MAC Mode (CCM) of operation within Transport
   Layer Security (TLS) and Datagram TLS (DTLS) to provide
   confidentiality and data origin authentication.  The AES-CCM
   algorithm is amenable to compact implementations, making it suitable
   for constrained environments.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on August 16, 2012.

Copyright Notice

   Copyright (c) 2012 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 3

   2.  Conventions Used In This Document . . . . . . . . . . . . . . . 3

   3.  RSA Based AES-CCM Cipher Suites . . . . . . . . . . . . . . . . 3

   4.  PSK Based AES-CCM Cipher Suites . . . . . . . . . . . . . . . . 4

   5.  TLS Versions  . . . . . . . . . . . . . . . . . . . . . . . . . 5

   6.  New AEAD algorithms . . . . . . . . . . . . . . . . . . . . . . 5
     6.1.  AES-128-CCM with an 8-octet Integrity Check Value (ICV) . . 5
     6.2.  AES-256-CCM with a 8-octet Integrity Check Value (ICV)  . . 6

   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 6

   8.  Security Considerations . . . . . . . . . . . . . . . . . . . . 6
     8.1.  Perfect Forward Secrecy . . . . . . . . . . . . . . . . . . 6
     8.2.  Counter Reuse . . . . . . . . . . . . . . . . . . . . . . . 6

   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . 6

   10. References  . . . . . . . . . . . . . . . . . . . . . . . . . . 7
     10.1. Normative References  . . . . . . . . . . . . . . . . . . . 7
     10.2. Informative References  . . . . . . . . . . . . . . . . . . 7

   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . . . 7

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1.  Introduction

   This document describes the use of Advanced Encryption Standard (AES)
   [AES] in Counter with CBC-MAC Mode (CCM) [CCM] in several TLS
   ciphersuites.  AES-CCM provides both authentication and
   confidentiality and uses as its only primitive the AES encrypt
   operation (the AES decrypt operation is not needed).  This makes it
   amenable to compact implementations, which is advantageous in
   constrained environments.  The use of AES-CCM has been specified for
   IPsec ESP [RFC4309] and 802.15.4 wireless networks [IEEE802154].

   Authenticated encryption, in addition to providing confidentiality
   for the plaintext that is encrypted, provides a way to check its
   integrity and authenticity.  Authenticated Encryption with Associated
   Data, or AEAD [RFC5116], adds the ability to check the integrity and
   authenticity of some associated data that is not encrypted.  This
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