RFC 3547 (rfc3547) - Page 1 of 48
The Group Domain of Interpretation
Alternative Format: Original Text Document
Network Working Group M. Baugher
Request for Comments: 3547 B. Weis
Category: Standards Track Cisco
T. Hardjono
Verisign
H. Harney
Sparta
July 2003
The Group Domain of Interpretation
Status of this Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2003). All Rights Reserved.
Abstract
This document presents an ISAMKP Domain of Interpretation (DOI) for
group key management to support secure group communications. The
GDOI manages group security associations, which are used by IPSEC and
potentially other data security protocols running at the IP or
application layers. These security associations protect one or more
key-encrypting keys, traffic-encrypting keys, or data shared by group
members.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. GDOI Applications. . . . . . . . . . . . . . . . . . . . 5
1.2. Extending GDOI . . . . . . . . . . . . . . . . . . . . . 5
2. GDOI Phase 1 protocol. . . . . . . . . . . . . . . . . . . . . 6
2.1. ISAKMP Phase 1 protocol. . . . . . . . . . . . . . . . . 6
2.1.1. DOI value. . . . . . . . . . . . . . . . . . . . 6
2.1.2. UDP port . . . . . . . . . . . . . . . . . . . . 6
3. GROUPKEY-PULL Exchange . . . . . . . . . . . . . . . . . . . . 6
3.1. Authorization. . . . . . . . . . . . . . . . . . . . . . 7
3.2. Messages . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2.1. Perfect Forward Secrecy. . . . . . . . . . . . . 9
3.2.2. ISAKMP Header Initialization . . . . . . . . . . 9
Baugher, et. al. Standards Track