Key Provisioning for Group Communication using ACE
draft-ietf-ace-key-groupcomm-02

Document Type Active Internet-Draft (ace WG)
Last updated 2019-07-05
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: January 6, 2020                                         RISE AB
                                                           July 05, 2019

           Key Provisioning for Group Communication using ACE
                  draft-ietf-ace-key-groupcomm-02

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 January 6, 2020.

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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Palombini & Tiloca       Expires January 6, 2020                [Page 1]
Internet-Draft  Key Provisioning for Group Communication       July 2019

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  . . . . . . . . . . . . . . . . .   7
     3.3.  Token Post  . . . . . . . . . . . . . . . . . . . . . . .   8
   4.  Key Distribution  . . . . . . . . . . . . . . . . . . . . . .  11
     4.1.  Key Distribution Request  . . . . . . . . . . . . . . . .  12
     4.2.  Key Distribution Response . . . . . . . . . . . . . . . .  13
   5.  Removal of a Node from the Group  . . . . . . . . . . . . . .  16
     5.1.  Expired Authorization . . . . . . . . . . . . . . . . . .  16
     5.2.  Request to Leave the Group  . . . . . . . . . . . . . . .  16
   6.  Retrieval of New or Updated Keying Material . . . . . . . . .  17
     6.1.  Key Re-Distribution Request . . . . . . . . . . . . . . .  18
     6.2.  Key Re-Distribution Response  . . . . . . . . . . . . . .  19
   7.  Retrieval of Public Keys for Group Members  . . . . . . . . .  19
     7.1.  Public Key Request  . . . . . . . . . . . . . . . . . . .  20
     7.2.  Public Key Response . . . . . . . . . . . . . . . . . . .  20
   8.  ACE Groupcomm Parameters  . . . . . . . . . . . . . . . . . .  21
   9.  ACE Groupcomm Request Type  . . . . . . . . . . . . . . . . .  22
   10. Security Considerations . . . . . . . . . . . . . . . . . . .  23
     10.1.  Update of Keying Material  . . . . . . . . . . . . . . .  24
     10.2.  Block-Wise Considerations  . . . . . . . . . . . . . . .  24
   11. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  25
     11.1.  ACE Authorization Server Request Creation Hints Registry  25
     11.2.  ACE Public Key Encoding Registry . . . . . . . . . . . .  25
     11.3.  ACE Groupcomm Parameters Registry  . . . . . . . . . . .  26
     11.4.  Ace Groupcomm Request Type Registry  . . . . . . . . . .  26
     11.5.  ACE Groupcomm Key Registry . . . . . . . . . . . . . . .  27
     11.6.  ACE Groupcomm Profile Registry . . . . . . . . . . . . .  28
     11.7.  ACE Groupcomm Policy Registry  . . . . . . . . . . . . .  28
     11.8.  Sequence Number Synchronization Method Registry  . . . .  29
     11.9.  Expert Review Instructions . . . . . . . . . . . . . . .  29
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  30
     12.1.  Normative References . . . . . . . . . . . . . . . . . .  30
     12.2.  Informative References . . . . . . . . . . . . . . . . .  31
   Appendix A.  Requirements on Application Profiles . . . . . . . .  33
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