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AES-CCM Elliptic Curve Cryptography (ECC) Cipher Suites for TLS (RFC7251) Disclosure Number: IPCOM000237604D
Publication Date: 2014-Jun-27
Document File: 20 page(s) / 19K

Publishing Venue

The Prior Art Database

Related People

D. McGrew: AUTHOR [+4]


This document describes the use of Advanced Encryption Standard (AES) [AES] in Counter with CBC-MAC Mode (CCM) [CCM] in several TLS cipher suites. AES-CCM provides both authentication and confidentiality (encryption and decryption) and uses as its only primitive the AES encrypt block cipher operation. This makes it amenable to compact implementations, which are 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 the IPsec Encapsulating Security Payload (ESP) [RFC4309] and 802.15.4 wireless networks [IEEE802154].

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Internet Engineering Task Force (IETF)                         D. McGrew Request for Comments: 7251                                 Cisco Systems Category: Informational                                        D. Bailey ISSN: 2070-1721                                   Ruhr-University Bochum                                                              M. Campagna                                                                 R. Dugal                                                           Certicom Corp.                                                                June 2014

     AES-CCM Elliptic Curve Cryptography (ECC) Cipher Suites for TLS


   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,    while at the same time providing a high level of security.  The    cipher suites defined in this document use Elliptic Curve    Cryptography (ECC) and are advantageous in networks with limited    bandwidth.

Status of This Memo

   This document is not an Internet Standards Track specification; it is    published for informational purposes.

   This document is a product of the Internet Engineering Task Force    (IETF).  It represents the consensus of the IETF community.  It has    received public review and has been approved for publication by the    Internet Engineering Steering Group (IESG).  Not all documents    approved by the IESG are a candidate for any level of Internet    Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at

 McGrew, et al.                Informational                     [Page 1]
 RFC 7251                     AES-CCM ECC TLS                   June 2014

 Copyright Notice

   Copyright (c) 2014 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    Provisions Relating to IETF Documents    ( in effect on the date of    publication of this document.  Please review these documents    carefully, as they describe your rights...