Key Provisioning for Group Communication using ACE
draft-ietf-ace-key-groupcomm-01
ACE Working Group F. Palombini
Internet-Draft Ericsson AB
Intended status: Standards Track M. Tiloca
Expires: September 9, 2019 RISE AB
March 08, 2019
Key Provisioning for Group Communication using ACE
draft-ietf-ace-key-groupcomm-01
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.
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Palombini & Tiloca Expires September 9, 2019 [Page 1]
Internet-Draft Key Provisioning for Group Communication March 2019
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3
2. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Authorization to Join a Group . . . . . . . . . . . . . . . . 5
3.1. Authorization Request . . . . . . . . . . . . . . . . . . 6
3.2. Authorization Response . . . . . . . . . . . . . . . . . 7
3.3. Token Post . . . . . . . . . . . . . . . . . . . . . . . 8
4. Key Distribution . . . . . . . . . . . . . . . . . . . . . . 8
4.1. Key Distribution Request . . . . . . . . . . . . . . . . 9
4.2. Key Distribution Response . . . . . . . . . . . . . . . . 10
5. Removal of a Node from the Group . . . . . . . . . . . . . . 12
5.1. Expired Authorization . . . . . . . . . . . . . . . . . . 12
5.2. Request to Leave the Group . . . . . . . . . . . . . . . 12
6. Retrieval of Updated Keying Material . . . . . . . . . . . . 13
6.1. Key Re-Distribution Request . . . . . . . . . . . . . . . 14
6.2. Key Re-Distribution Response . . . . . . . . . . . . . . 14
7. Retrieval of Public Keys for Group Members . . . . . . . . . 15
7.1. Public Key Request . . . . . . . . . . . . . . . . . . . 15
7.2. Public Key Response . . . . . . . . . . . . . . . . . . . 16
8. Security Considerations . . . . . . . . . . . . . . . . . . . 16
9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 16
9.1. ACE Groupcomm Key Registry . . . . . . . . . . . . . . . 16
9.2. ACE Groupcomm Profile Registry . . . . . . . . . . . . . 17
9.3. Expert Review Instructions . . . . . . . . . . . . . . . 18
10. References . . . . . . . . . . . . . . . . . . . . . . . . . 18
10.1. Normative References . . . . . . . . . . . . . . . . . . 18
10.2. Informative References . . . . . . . . . . . . . . . . . 19
Appendix A. Document Updates . . . . . . . . . . . . . . . . . . 20
A.1. Version -00 to -01 . . . . . . . . . . . . . . . . . . . 20
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 20
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 21
1. Introduction
This document expands the ACE framework [I-D.ietf-ace-oauth-authz] to
define the format of messages used to request, distribute and renew
the keying material in a group communication scenario, e.g. based on
multicast [RFC7390] or on publishing-subscribing
[I-D.ietf-core-coap-pubsub].
Profiles that use group communication can build on this document to
specify the selection of the message parameters defined in this
document to use and their values. Known applications that can
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