Group Key Management using IKEv2
draft-yeung-g-ikev2-14

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Last updated 2018-07-02
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Network Working Group                                            B. Weis
Internet-Draft                                             Cisco Systems
Obsoletes: 6407 (if approved)                                 V. Smyslov
Intended status: Standards Track                              ELVIS-PLUS
Expires: January 3, 2019                                    July 2, 2018

                    Group Key Management using IKEv2
                         draft-yeung-g-ikev2-14

Abstract

   This document presents a set of IKEv2 exchanges that comprise a group
   key management protocol.  The protocol is in conformance with the
   Multicast Security (MSEC) key management architecture, which contains
   two components: member registration and group rekeying.  Both
   components require a Group Controller/Key Server to download IPsec
   group security associations to authorized members of a group.  The
   group members then exchange IP multicast or other group traffic as
   IPsec packets.  This document obsoletes RFC 6407.

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   Copyright (c) 2018 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
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   (https://trustee.ietf.org/license-info) in effect on the date of
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Weis & Smyslov           Expires January 3, 2019                [Page 1]
Internet-Draft                   G-IKEv2                       July 2018

   to this document.  Code Components extracted from this document must
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction and Overview . . . . . . . . . . . . . . . . . .   3
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   5
     1.2.  G-IKEv2 Payloads  . . . . . . . . . . . . . . . . . . . .   5
   2.  G-IKEv2 integration into IKEv2 protocol . . . . . . . . . . .   6
     2.1.  UDP port  . . . . . . . . . . . . . . . . . . . . . . . .   6
   3.  G-IKEv2 Protocol  . . . . . . . . . . . . . . . . . . . . . .   6
     3.1.  G-IKEv2 member registration and secure channel
           establishment . . . . . . . . . . . . . . . . . . . . . .   6
       3.1.1.  GSA_AUTH exchange . . . . . . . . . . . . . . . . . .   7
       3.1.2.  GSA_REGISTRATION Exchange . . . . . . . . . . . . . .   8
       3.1.3.  IKEv2 Header Initialization . . . . . . . . . . . . .   9
       3.1.4.  GM Registration Operations  . . . . . . . . . . . . .   9
       3.1.5.  GCKS Registration Operations  . . . . . . . . . . . .  10
       3.1.6.  Interaction with IKEv2 protocols  . . . . . . . . . .  12
     3.2.  Group Maintenance Channel . . . . . . . . . . . . . . . .  12
       3.2.1.  GSA_REKEY exchange  . . . . . . . . . . . . . . . . .  12
       3.2.2.  GSA_INBAND_REKEY exchange . . . . . . . . . . . . . .  16
       3.2.3.  Deletion of SAs . . . . . . . . . . . . . . . . . . .  17
     3.3.  Counter-based modes of operation  . . . . . . . . . . . .  18
   4.  Header and Payload Formats  . . . . . . . . . . . . . . . . .  19
     4.1.  The G-IKEv2 Header  . . . . . . . . . . . . . . . . . . .  19
     4.2.  Group Identification (IDg) Payload  . . . . . . . . . . .  20
     4.3.  Security Association - GM Supported Transforms (SAg)  . .  20
     4.4.  Group Security Association Payload  . . . . . . . . . . .  20
       4.4.1.  GSA Policy  . . . . . . . . . . . . . . . . . . . . .  21
     4.5.  KEK Policy  . . . . . . . . . . . . . . . . . . . . . . .  22
       4.5.1.  KEK Attributes  . . . . . . . . . . . . . . . . . . .  23
     4.6.  GSA TEK Policy  . . . . . . . . . . . . . . . . . . . . .  26
       4.6.1.  TEK ESP and AH Protocol-Specific Policy . . . . . . .  27
     4.7.  GSA Group Associated Policy . . . . . . . . . . . . . . .  28
       4.7.1.  ACTIVATION_TIME_DELAY/DEACTIVATION_TIME_DELAY . . . .  29
     4.8.  Key Download Payload  . . . . . . . . . . . . . . . . . .  30
       4.8.1.  TEK Download Type . . . . . . . . . . . . . . . . . .  31
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