Key Provisioning for Group Communication using ACE
draft-ietf-ace-key-groupcomm-11

Document Type Active Internet-Draft (ace WG)
Authors Francesca Palombini  , Marco Tiloca 
Last updated 2021-02-22
Replaces draft-palombini-ace-key-groupcomm
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Stream WG state WG Document (wg milestone: Jul 2021 - Submission to the IE... )
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ACE Working Group                                           F. Palombini
Internet-Draft                                               Ericsson AB
Intended status: Standards Track                               M. Tiloca
Expires: August 26, 2021                                         RISE AB
                                                       February 22, 2021

           Key Provisioning for Group Communication using ACE
                    draft-ietf-ace-key-groupcomm-11

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.

   Internet-Drafts are working documents of the Internet Engineering
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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on August 26, 2021.

Copyright Notice

   Copyright (c) 2021 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 August 26, 2021                [Page 1]
Internet-Draft  Key Provisioning for Group Communication   February 2021

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Overview  . . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Authorization to Join a Group . . . . . . . . . . . . . . . .   7
     3.1.  Authorization Request . . . . . . . . . . . . . . . . . .   8
     3.2.  Authorization Response  . . . . . . . . . . . . . . . . .  10
     3.3.  Token Post  . . . . . . . . . . . . . . . . . . . . . . .  11
   4.  Keying Material Provisioning and Group Membership Management   14
     4.1.  Interface at the KDC  . . . . . . . . . . . . . . . . . .  16
     4.2.  Retrieval of Group Names and URIs . . . . . . . . . . . .  38
     4.3.  Joining Exchange  . . . . . . . . . . . . . . . . . . . .  38
     4.4.  Retrieval of Updated Keying Material  . . . . . . . . . .  40
     4.5.  Requesting a Change of Keying Material  . . . . . . . . .  43
     4.6.  Retrieval of Public Keys and Roles for Group Members  . .  44
     4.7.  Update of Public Key  . . . . . . . . . . . . . . . . . .  46
     4.8.  Retrieval of Group Policies . . . . . . . . . . . . . . .  47
     4.9.  Retrieval of Keying Material Version  . . . . . . . . . .  48
     4.10. Group Leaving Request . . . . . . . . . . . . . . . . . .  49
   5.  Removal of a Node from the Group  . . . . . . . . . . . . . .  49
   6.  Extended Scope Format . . . . . . . . . . . . . . . . . . . .  51
   7.  ACE Groupcomm Parameters  . . . . . . . . . . . . . . . . . .  53
   8.  ACE Groupcomm Error Identifiers . . . . . . . . . . . . . . .  54
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  55
     9.1.  Update of Keying Material . . . . . . . . . . . . . . . .  56
     9.2.  Block-Wise Considerations . . . . . . . . . . . . . . . .  57
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  57
     10.1.  Media Type Registrations . . . . . . . . . . . . . . . .  57
     10.2.  CoAP Content-Formats Registry  . . . . . . . . . . . . .  58
     10.3.  OAuth Parameters Registry  . . . . . . . . . . . . . . .  59
     10.4.  OAuth Parameters CBOR Mappings Registry  . . . . . . . .  59
     10.5.  ACE Groupcomm Parameters Registry  . . . . . . . . . . .  59
     10.6.  ACE Groupcomm Key Registry . . . . . . . . . . . . . . .  60
     10.7.  ACE Groupcomm Profile Registry . . . . . . . . . . . . .  60
     10.8.  ACE Groupcomm Policy Registry  . . . . . . . . . . . . .  61
     10.9.  Sequence Number Synchronization Method Registry  . . . .  62
     10.10. Interface Description (if=) Link Target Attribute Values
            Registry . . . . . . . . . . . . . . . . . . . . . . . .  62
     10.11. CBOR Tags Registry . . . . . . . . . . . . . . . . . . .  63
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