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

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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.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on January 3, 2019.

Copyright Notice

   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
   Provisions Relating to IETF Documents
   (https://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

Weis & Smyslov           Expires January 3, 2019                [Page 1]
Internet-Draft                   G-IKEv2                       July 2018

   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.

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