Key Provisioning for Group Communication using ACE
draft-ietf-ace-key-groupcomm-09
ACE Working Group F. Palombini
Internet-Draft Ericsson AB
Intended status: Standards Track M. Tiloca
Expires: March 8, 2021 RISE AB
September 4, 2020
Key Provisioning for Group Communication using ACE
draft-ietf-ace-key-groupcomm-09
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.
Discussion Venues
This note is to be removed before publishing as an RFC.
Source for this draft and an issue tracker can be found at
https://github.com/ace-wg/ace-key-groupcomm.
Status of This Memo
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provisions of BCP 78 and BCP 79.
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This Internet-Draft will expire on March 8, 2021.
Copyright Notice
Copyright (c) 2020 IETF Trust and the persons identified as the
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Provisions Relating to IETF Documents (https://trustee.ietf.org/
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Internet-Draft Key Provisioning for Group Communication September 2020
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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 . . . . . . . . . . . . . . . . . . . . . . . 15
4.1. Interface at the KDC . . . . . . . . . . . . . . . . . . 16
4.2. Retrieval of Group Names and URIs . . . . . . . . . . . . 33
4.3. Joining Exchange . . . . . . . . . . . . . . . . . . . . 33
4.4. Retrieval of Updated Keying Material . . . . . . . . . . 35
4.5. Requesting a Change of Keying Material . . . . . . . . . 37
4.6. Retrieval of Public Keys and Roles for Group Members . . 37
4.7. Update of Public Key . . . . . . . . . . . . . . . . . . 38
4.8. Retrieval of Group Policies . . . . . . . . . . . . . . . 39
4.9. Retrieval of Keying Material Version . . . . . . . . . . 39
4.10. Group Leaving Request . . . . . . . . . . . . . . . . . . 40
5. Removal of a Node from the Group . . . . . . . . . . . . . . 40
6. ACE Groupcomm Parameters . . . . . . . . . . . . . . . . . . 41
7. Security Considerations . . . . . . . . . . . . . . . . . . . 42
7.1. Update of Keying Material . . . . . . . . . . . . . . . . 43
7.2. Block-Wise Considerations . . . . . . . . . . . . . . . . 44
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 45
8.1. Media Type Registrations . . . . . . . . . . . . . . . . 45
8.2. CoAP Content-Formats Registry . . . . . . . . . . . . . . 46
8.3. OAuth Parameters Registry . . . . . . . . . . . . . . . . 46
8.4. OAuth Parameters CBOR Mappings Registry . . . . . . . . . 46
8.5. ACE Groupcomm Parameters Registry . . . . . . . . . . . . 47
8.6. ACE Groupcomm Key Registry . . . . . . . . . . . . . . . 47
8.7. ACE Groupcomm Profile Registry . . . . . . . . . . . . . 48
8.8. ACE Groupcomm Policy Registry . . . . . . . . . . . . . . 49
8.9. Sequence Number Synchronization Method Registry . . . . . 49
8.10. Interface Description (if=) Link Target Attribute Values
Registry . . . . . . . . . . . . . . . . . . . . . . . . 50
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