Key Provisioning for Group Communication using ACE
draft-ietf-ace-key-groupcomm-07
ACE Working Group F. Palombini
Internet-Draft Ericsson AB
Intended status: Standards Track M. Tiloca
Expires: December 20, 2020 RISE AB
June 18, 2020
Key Provisioning for Group Communication using ACE
draft-ietf-ace-key-groupcomm-07
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
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This Internet-Draft will expire on December 20, 2020.
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Palombini & Tiloca Expires December 20, 2020 [Page 1]
Internet-Draft Key Provisioning for Group Communication June 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 . . . . . . . . . . . . . . . . . 9
3.3. Token Post . . . . . . . . . . . . . . . . . . . . . . . 10
4. Keying Material Provisioning and Group Membership Management 14
4.1. Interface at the KDC . . . . . . . . . . . . . . . . . . 15
4.2. Joining Exchange . . . . . . . . . . . . . . . . . . . . 30
4.3. Retrieval of Updated Keying Material . . . . . . . . . . 31
4.4. Retrieval of New Keying Material . . . . . . . . . . . . 33
4.5. Retrieval of Public Keys and Roles for Group Members . . 34
4.6. Update of Public Key . . . . . . . . . . . . . . . . . . 34
4.7. Retrieval of Group Policies . . . . . . . . . . . . . . . 35
4.8. Retrieval of Keying Material Version . . . . . . . . . . 36
4.9. Group Leaving Request . . . . . . . . . . . . . . . . . . 36
5. Removal of a Node from the Group . . . . . . . . . . . . . . 36
6. ACE Groupcomm Parameters . . . . . . . . . . . . . . . . . . 37
7. Security Considerations . . . . . . . . . . . . . . . . . . . 38
7.1. Update of Keying Material . . . . . . . . . . . . . . . . 40
7.2. Block-Wise Considerations . . . . . . . . . . . . . . . . 40
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 41
8.1. Media Type Registrations . . . . . . . . . . . . . . . . 41
8.2. CoAP Content-Formats Registry . . . . . . . . . . . . . . 42
8.3. OAuth Parameters Registry . . . . . . . . . . . . . . . . 42
8.4. OAuth Parameters CBOR Mappings Registry . . . . . . . . . 42
8.5. ACE Groupcomm Parameters Registry . . . . . . . . . . . . 43
8.6. ACE Groupcomm Key Registry . . . . . . . . . . . . . . . 43
8.7. ACE Groupcomm Profile Registry . . . . . . . . . . . . . 44
8.8. ACE Groupcomm Policy Registry . . . . . . . . . . . . . . 45
8.9. Sequence Number Synchronization Method Registry . . . . . 46
8.10. Interface Description (if=) Link Target Attribute Values
Registry . . . . . . . . . . . . . . . . . . . . . . . . 46
8.11. Expert Review Instructions . . . . . . . . . . . . . . . 46
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 47
9.1. Normative References . . . . . . . . . . . . . . . . . . 47
9.2. Informative References . . . . . . . . . . . . . . . . . 49
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