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Using Counter Modes with Encapsulating Security Payload (ESP) and Authentication Header (AH) to Protect Group Traffic (RFC6054)

IP.com Disclosure Number: IPCOM000201780D
Original Publication Date: 2010-Nov-01
Included in the Prior Art Database: 2010-Nov-23
Document File: 20 page(s) / 23K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

D. McGrew: AUTHOR [+2]

Abstract

The IP Encapsulating Security Payload (ESP) specification [RFC4303] and Authentication Header (AH) [RFC4302] are security protocols for IPsec [RFC4301]. Several new AES encryption modes of operation have been specified for ESP: Counter Mode (CTR) [RFC3686], Galois/Counter Mode (GCM) [RFC4106], and Counter with Cipher Block Chaining-Message Authentication Code (CBC-MAC) Mode (CCM) [RFC4309]; and one that has been specified for both ESP and AH: the Galois Message Authentication Code (GMAC) [RFC4543]. A Camellia counter mode [RFC5528] and a GOST counter mode [RFC4357] have also been specified. These new modes offer advantages over traditional modes of operation. However, they all have restrictions on their use in situations in which multiple senders are protecting traffic using the same key. This document addresses this restriction and describes how these modes can be used with group key management protocols such as the Group Domain of Interpretation (GDOI) protocol [RFC3547] and the Group Secure Association Key Management Protocol (GSAKMP) [RFC4535].

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Internet Engineering Task Force (IETF)                         D. McGrew Request for Comments: 6054                                       B. Weis Category: Standards Track                                  Cisco Systems ISSN: 2070-1721                                            November 2010

    Using Counter Modes with Encapsulating Security Payload (ESP) and           Authentication Header (AH) to Protect Group Traffic

Abstract

   Counter modes have been defined for block ciphers such as the    Advanced Encryption Standard (AES).  Counter modes use a counter,    which is typically assumed to be incremented by a single sender.    This memo describes the use of counter modes when applied to the    Encapsulating Security Payload (ESP) and Authentication Header (AH)    in multiple-sender group applications.

Status of This Memo

   This is an Internet Standards Track document.

   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).  Further information on    Internet Standards is available in 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    http://www.rfc-editor.org/info/rfc6054.

Copyright Notice

   Copyright (c) 2010 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    (http://trustee.ietf.org/license-info) in effect on the date of    publication of this document.  Please review these documents    carefully, as they describe your rights and restrictions with respect    to this document.  Code Components extracted from this document must    include Simplified BSD License text as described in Section 4.e of    the Trust Legal Provisions and are provided without warranty as    described in the Simplified BSD License.

McGrew & Weis                Standards Track                    [Page 1]
 RFC 6054                   Group Counter Modes             November 2010

 Table of Contents

   1. Introduction ....................................................2       1.1. Requirements Notation ......................................2    2. Problem Statement ...............................................2    3. IV Formation for Counter Modes with Group Keys ..................3    4. Group Key Management Conventions ................................4    5. Security Considerations ...................................