Key Provisioning for Group Communication using ACE
draft-ietf-ace-key-groupcomm-04
ACE Working Group F. Palombini
Internet-Draft Ericsson AB
Intended status: Standards Track M. Tiloca
Expires: July 18, 2020 RISE AB
January 15, 2020
Key Provisioning for Group Communication using ACE
draft-ietf-ace-key-groupcomm-04
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 July 18, 2020.
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Palombini & Tiloca Expires July 18, 2020 [Page 1]
Internet-Draft Key Provisioning for Group Communication January 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 12
4.1. Interface at KDC . . . . . . . . . . . . . . . . . . . . 13
4.2. Joining Exchange . . . . . . . . . . . . . . . . . . . . 23
4.3. Retrieval of Updated Keying Material . . . . . . . . . . 24
4.4. Retrieval of New Keying Material . . . . . . . . . . . . 26
4.5. Retrieval of Public Keys for Group Members . . . . . . . 26
4.6. Retrieval of Group Policies . . . . . . . . . . . . . . . 27
4.7. Retrieval of Keying Material Version . . . . . . . . . . 27
4.8. Group Leaving Request . . . . . . . . . . . . . . . . . . 28
5. Removal of a Node from the Group . . . . . . . . . . . . . . 28
6. ACE Groupcomm Parameters . . . . . . . . . . . . . . . . . . 29
7. Security Considerations . . . . . . . . . . . . . . . . . . . 30
7.1. Update of Keying Material . . . . . . . . . . . . . . . . 31
7.2. Block-Wise Considerations . . . . . . . . . . . . . . . . 31
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 32
8.1. Media Type Registrations . . . . . . . . . . . . . . . . 32
8.2. CoAP Content-Formats Registry . . . . . . . . . . . . . . 33
8.3. ACE Authorization Server Request Creation Hints Registry 33
8.4. ACE Groupcomm Parameters Registry . . . . . . . . . . . . 34
8.5. ACE Groupcomm Key Registry . . . . . . . . . . . . . . . 34
8.6. ACE Groupcomm Profile Registry . . . . . . . . . . . . . 35
8.7. ACE Groupcomm Policy Registry . . . . . . . . . . . . . . 36
8.8. Sequence Number Synchronization Method Registry . . . . . 36
8.9. Expert Review Instructions . . . . . . . . . . . . . . . 37
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 38
9.1. Normative References . . . . . . . . . . . . . . . . . . 38
9.2. Informative References . . . . . . . . . . . . . . . . . 39
9.3. URIs . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Appendix A. Requirements on Application Profiles . . . . . . . . 41
Appendix B. Document Updates . . . . . . . . . . . . . . . . . . 43
B.1. Version -03 to -04 . . . . . . . . . . . . . . . . . . . 43
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