Group Key Management using IKEv2
draft-yeung-g-ikev2-15

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Network Working Group                                            B. Weis
Internet-Draft                                               Independent
Obsoletes: 6407 (if approved)                                 V. Smyslov
Intended status: Standards Track                              ELVIS-PLUS
Expires: September 12, 2019                               March 11, 2019

                    Group Key Management using IKEv2
                         draft-yeung-g-ikev2-15

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.

Status of This Memo

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   This Internet-Draft will expire on September 12, 2019.

Copyright Notice

   Copyright (c) 2019 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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   carefully, as they describe your rights and restrictions with respect

Weis & Smyslov         Expires September 12, 2019               [Page 1]
Internet-Draft                   G-IKEv2                      March 2019

   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
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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  . . . . . . . . . . . . . . . . .  13
       3.2.2.  GSA_INBAND_REKEY exchange . . . . . . . . . . . . . .  17
       3.2.3.  Deletion of SAs . . . . . . . . . . . . . . . . . . .  17
     3.3.  Counter-based modes of operation  . . . . . . . . . . . .  18
       3.3.1.  Allocation of SIDs  . . . . . . . . . . . . . . . . .  18
       3.3.2.  GM Usage of SIDs  . . . . . . . . . . . . . . . . . .  20
   4.  Header and Payload Formats  . . . . . . . . . . . . . . . . .  20
     4.1.  The G-IKEv2 Header  . . . . . . . . . . . . . . . . . . .  20
     4.2.  Group Identification (IDg) Payload  . . . . . . . . . . .  21
     4.3.  Security Association - GM Supported Transforms (SAg)  . .  21
     4.4.  Group Security Association Payload  . . . . . . . . . . .  21
       4.4.1.  GSA Policy  . . . . . . . . . . . . . . . . . . . . .  21
       4.4.2.  KEK Policy  . . . . . . . . . . . . . . . . . . . . .  23
       4.4.3.  GSA TEK Policy  . . . . . . . . . . . . . . . . . . .  26
       4.4.4.  GSA Group Associated Policy . . . . . . . . . . . . .  29
     4.5.  Key Download Payload  . . . . . . . . . . . . . . . . . .  30
       4.5.1.  TEK Download Type . . . . . . . . . . . . . . . . . .  32
       4.5.2.  KEK Download Type . . . . . . . . . . . . . . . . . .  33