Key Provisioning for Group Communication using ACE
draft-ietf-ace-key-groupcomm-05

Document Type Active Internet-Draft (ace WG)
Last updated 2020-03-09
Replaces draft-palombini-ace-key-groupcomm
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ACE Working Group                                           F. Palombini
Internet-Draft                                               Ericsson AB
Intended status: Standards Track                               M. Tiloca
Expires: September 10, 2020                                      RISE AB
                                                          March 09, 2020

           Key Provisioning for Group Communication using ACE
                     draft-ietf-ace-key-groupcomm-05

Abstract

   This document defines message formats and procedures for requesting
   and distributing group keying material using the ACE framework, to
   protect communications between group members.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on September 10, 2020.

Copyright Notice

   Copyright (c) 2020 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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Palombini & Tiloca     Expires September 10, 2020               [Page 1]
Internet-Draft  Key Provisioning for Group Communication      March 2020

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Overview  . . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Authorization to Join a Group . . . . . . . . . . . . . . . .   6
     3.1.  Authorization Request . . . . . . . . . . . . . . . . . .   7
     3.2.  Authorization Response  . . . . . . . . . . . . . . . . .   8
     3.3.  Token Post  . . . . . . . . . . . . . . . . . . . . . . .   9
   4.  Keying Material Provisioning and Group Membership Management   13
     4.1.  Interface at the KDC  . . . . . . . . . . . . . . . . . .  14
     4.2.  Joining Exchange  . . . . . . . . . . . . . . . . . . . .  26
     4.3.  Retrieval of Updated Keying Material  . . . . . . . . . .  27
     4.4.  Retrieval of New Keying Material  . . . . . . . . . . . .  28
     4.5.  Retrieval of Public Keys and Roles for Group Members  . .  29
     4.6.  Update of Public Key  . . . . . . . . . . . . . . . . . .  30
     4.7.  Retrieval of Group Policies . . . . . . . . . . . . . . .  31
     4.8.  Retrieval of Keying Material Version  . . . . . . . . . .  31
     4.9.  Group Leaving Request . . . . . . . . . . . . . . . . . .  31
   5.  Removal of a Node from the Group  . . . . . . . . . . . . . .  32
   6.  ACE Groupcomm Parameters  . . . . . . . . . . . . . . . . . .  33
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  34
     7.1.  Update of Keying Material . . . . . . . . . . . . . . . .  35
     7.2.  Block-Wise Considerations . . . . . . . . . . . . . . . .  36
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  36
     8.1.  Media Type Registrations  . . . . . . . . . . . . . . . .  36
     8.2.  CoAP Content-Formats Registry . . . . . . . . . . . . . .  37
     8.3.  ACE Authorization Server Request Creation Hints Registry   37
     8.4.  ACE Groupcomm Parameters Registry . . . . . . . . . . . .  38
     8.5.  ACE Groupcomm Key Registry  . . . . . . . . . . . . . . .  39
     8.6.  ACE Groupcomm Profile Registry  . . . . . . . . . . . . .  39
     8.7.  ACE Groupcomm Policy Registry . . . . . . . . . . . . . .  40
     8.8.  Sequence Number Synchronization Method Registry . . . . .  41
     8.9.  Expert Review Instructions  . . . . . . . . . . . . . . .  41
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  42
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  42
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  43
     9.3.  URIs  . . . . . . . . . . . . . . . . . . . . . . . . . .  45
   Appendix A.  Requirements on Application Profiles . . . . . . . .  45
   Appendix B.  Document Updates . . . . . . . . . . . . . . . . . .  47
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