Group Domain of Interpretation (GDOI) GROUPKEY-PUSH Acknowledgement Message
RFC 8263

Document Type RFC - Proposed Standard (November 2017; No errata)
Was draft-weis-gdoi-rekey-ack (individual)
Last updated 2017-11-30
Stream IETF
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Stream WG state Submitted to IESG for Publication
Document shepherd Adrian Farrel
Shepherd write-up Show (last changed 2017-03-28)
IESG IESG state RFC 8263 (Proposed Standard)
Consensus Boilerplate Yes
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Responsible AD Kathleen Moriarty
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IANA IANA review state Version Changed - Review Needed
IANA action state RFC-Ed-Ack
Internet Engineering Task Force (IETF)                           B. Weis
Request for Comments: 8263                                 Cisco Systems
Category: Standards Track                                      U. Mangla
ISSN: 2070-1721                                    Juniper Networks Inc.
                                                                 T. Karl
                                                        Deutsche Telekom
                                                           N. Maheshwari
                                                           November 2017

          Group Domain of Interpretation (GDOI) GROUPKEY-PUSH
                        Acknowledgement Message

Abstract

   The Group Domain of Interpretation (GDOI) includes the ability of a
   Group Controller/Key Server (GCKS) to provide a set of current Group
   Member (GM) devices with additional security associations (e.g., to
   rekey expiring security associations).  This memo adds the ability of
   a GCKS to request that the GM devices return an acknowledgement of
   receipt of its rekey message and specifies the acknowledgement
   method.

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 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   https://www.rfc-editor.org/info/rfc8263.

Weis, et al.                 Standards Track                    [Page 1]
RFC 8263                    GROUPKEY-PUSH ACK              November 2017

Copyright Notice

   Copyright (c) 2017 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
   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 ....................................................3
      1.1. Requirements Notation ......................................4
      1.2. Acronyms and Abbreviations .................................4
   2. Acknowledgement Message Request .................................5
      2.1. REKEY_ACK_KEK_SHA256 Type ..................................5
      2.2. REKEY_ACK_LKH_SHA256 Type ..................................6
      2.3. REKEY_ACK_KEK_SHA512 Type ..................................6
      2.4. REKEY_ACK_LKH_SHA512 Type ..................................6
   3. GROUPKEY-PUSH Acknowledgement Message ...........................6
      3.1. HDR ........................................................7
      3.2. HASH .......................................................8
      3.3. SEQ ........................................................9
      3.4. ID .........................................................9
   4. Group Member Operations .........................................9
   5. GCKS Operations ................................................10
   6. Management Considerations ......................................10
   7. Security Considerations ........................................12
      7.1. Protection of the GROUPKEY-PUSH ACK .......................12
      7.2. Transmitting a GROUPKEY-PUSH ACK ..........................13
      7.3. Receiving a GROUPKEY-PUSH ACK .............................13
   8. IANA Considerations ............................................14
   9. References .....................................................15
      9.1. Normative References ......................................15
      9.2. Informative References ....................................16
   Acknowledgements ..................................................17
   Authors' Addresses ................................................17

Weis, et al.                 Standards Track                    [Page 2]
RFC 8263                    GROUPKEY-PUSH ACK              November 2017

1.  Introduction

   The Group Domain of Interpretation (GDOI) [RFC6407] is a group key
   management method by which a Group Controller/Key Server (GCKS)
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