TLS Working Group D. McGrew
Internet-Draft Cisco Systems
Intended status: Informational D. Bailey
Expires: August 5, 2013 RSA/EMC
M. Campagna
R. Dugal
Certicom Corp.
February 1, 2013
AES-CCM ECC Cipher Suites for TLS
draft-mcgrew-tls-aes-ccm-ecc-06
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) to provide confidentiality and data origin
authentication. The AES-CCM algorithm is amenable to compact
implementations, making it suitable for constrained environments.
The ciphersuites defined in this document use Elliptic Curve
Cryptography (ECC), and are advantageous in networks with limited
bandwidth.
Status of this Memo
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This Internet-Draft will expire on August 5, 2013.
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Internet-Draft AES-CCM ECC TLS February 2013
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Conventions Used In This Document . . . . . . . . . . . . . 3
2. ECC based AES-CCM Cipher Suites . . . . . . . . . . . . . . . . 3
2.1. AEAD algorithms . . . . . . . . . . . . . . . . . . . . . . 5
2.2. Required algorithms for each CipherSuite . . . . . . . . . 5
3. TLS Versions . . . . . . . . . . . . . . . . . . . . . . . . . 5
4. History . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 6
6. Security Considerations . . . . . . . . . . . . . . . . . . . . 7
6.1. Perfect Forward Secrecy . . . . . . . . . . . . . . . . . . 7
6.2. Counter Reuse . . . . . . . . . . . . . . . . . . . . . . . 7
7. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 7
8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 7
8.1. Normative References . . . . . . . . . . . . . . . . . . . 7
8.2. Informative References . . . . . . . . . . . . . . . . . . 8
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 8
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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. Of course, adoption outside of constrained
environments is necessary to enable interoperability, such as that
between web clients and embedded servers, or between embedded clients
and web servers. The use of AES-CCM has been specified for IPsec ESP
datatracker.ietf.org