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The Group Domain of Interpretation
RFC 6407

Internet Engineering Task Force (IETF)                           B. Weis
Request for Comments: 6407                                     S. Rowles
Obsoletes: 3547                                            Cisco Systems
Category: Standards Track                                    T. Hardjono
ISSN: 2070-1721                                                      MIT
                                                            October 2011

                   The Group Domain of Interpretation

Abstract

   This document describes the Group Domain of Interpretation (GDOI)
   protocol specified in RFC 3547.  The GDOI provides group key
   management to support secure group communications according to the
   architecture specified in RFC 4046.  The GDOI manages group security
   associations, which are used by IPsec and potentially other data
   security protocols.  This document replaces RFC 3547.

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/rfc6407.

Copyright Notice

   Copyright (c) 2011 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.

Weis, et al.                 Standards Track                    [Page 1]
RFC 6407                          GDOI                      October 2011

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1.  Requirements Notation  . . . . . . . . . . . . . . . . . .  5
     1.2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  6
     1.3.  Acronyms and Abbreviations . . . . . . . . . . . . . . . .  7
   2.  GDOI Phase 1 Protocol  . . . . . . . . . . . . . . . . . . . .  8
     2.1.  DOI value  . . . . . . . . . . . . . . . . . . . . . . . .  8
     2.2.  UDP port . . . . . . . . . . . . . . . . . . . . . . . . .  8
   3.  GROUPKEY-PULL Exchange . . . . . . . . . . . . . . . . . . . .  9
     3.1.  Authorization  . . . . . . . . . . . . . . . . . . . . . .  9
     3.2.  Messages . . . . . . . . . . . . . . . . . . . . . . . . .  9
     3.3.  Group Member Operations  . . . . . . . . . . . . . . . . . 12
     3.4.  GCKS Operations  . . . . . . . . . . . . . . . . . . . . . 13
     3.5.  Counter-Modes of Operation . . . . . . . . . . . . . . . . 14
   4.  GROUPKEY-PUSH Message  . . . . . . . . . . . . . . . . . . . . 16
     4.1.  Use of Signature Keys  . . . . . . . . . . . . . . . . . . 17
     4.2.  ISAKMP Header Initialization . . . . . . . . . . . . . . . 17
     4.3.  GCKS Operations  . . . . . . . . . . . . . . . . . . . . . 17
     4.4.  Group Member Operations  . . . . . . . . . . . . . . . . . 18
   5.  Payloads and Defined Values  . . . . . . . . . . . . . . . . . 19
     5.1.  Identification Payload . . . . . . . . . . . . . . . . . . 20
     5.2.  Security Association Payload . . . . . . . . . . . . . . . 20
     5.3.  SA KEK Payload . . . . . . . . . . . . . . . . . . . . . . 21
     5.4.  Group Associated Policy  . . . . . . . . . . . . . . . . . 27
     5.5.  SA TEK Payload . . . . . . . . . . . . . . . . . . . . . . 30
     5.6.  Key Download Payload . . . . . . . . . . . . . . . . . . . 34

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