Key Management for OSCORE Groups in ACE
draft-ietf-ace-key-groupcomm-oscore-01
ACE Working Group M. Tiloca
Internet-Draft RISE AB
Intended status: Standards Track J. Park
Expires: September 9, 2019 Universitaet Duisburg-Essen
F. Palombini
Ericsson AB
March 08, 2019
Key Management for OSCORE Groups in ACE
draft-ietf-ace-key-groupcomm-oscore-01
Abstract
This document describes a method to request and provision keying
material in group communication scenarios where communications are
based on CoAP and secured with Object Security for Constrained
RESTful Environments (OSCORE). The proposed method delegates the
authentication and authorization of new client nodes that join an
OSCORE group through a Group Manager server. This approach builds on
the ACE framework for Authentication and Authorization, and leverages
protocol-specific profiles of ACE to achieve communication security,
proof-of-possession and server authentication.
Status of This Memo
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3
1.2. Relation to Other Documents . . . . . . . . . . . . . . . 5
2. Protocol Overview . . . . . . . . . . . . . . . . . . . . . . 5
2.1. Overview of the Join Process . . . . . . . . . . . . . . 7
2.2. Overview of the Group Rekeying Process . . . . . . . . . 8
3. Joining Node to Authorization Server . . . . . . . . . . . . 8
3.1. Authorization Request . . . . . . . . . . . . . . . . . . 8
3.2. Authorization Response . . . . . . . . . . . . . . . . . 9
4. Joining Node to Group Manager . . . . . . . . . . . . . . . . 10
4.1. Token Post . . . . . . . . . . . . . . . . . . . . . . . 10
4.1.1. 'key info' Parameter . . . . . . . . . . . . . . . . 11
4.2. Join Request . . . . . . . . . . . . . . . . . . . . . . 11
4.3. Join Response . . . . . . . . . . . . . . . . . . . . . . 12
5. Leaving of a Group Member . . . . . . . . . . . . . . . . . . 14
6. Public Keys of Joining Nodes . . . . . . . . . . . . . . . . 15
7. Group Rekeying Process . . . . . . . . . . . . . . . . . . . 16
8. Security Considerations . . . . . . . . . . . . . . . . . . . 16
9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 17
9.1. ACE Authorization Server Request Creation Hints Registry 17
9.2. ACE Groupcomm Key Registry . . . . . . . . . . . . . . . 17
9.3. OSCORE Security Context Parameters Registry . . . . . . . 18
9.4. ACE Groupcomm Profile Registry . . . . . . . . . . . . . 18
10. References . . . . . . . . . . . . . . . . . . . . . . . . . 19
10.1. Normative References . . . . . . . . . . . . . . . . . . 19
10.2. Informative References . . . . . . . . . . . . . . . . . 20
Appendix A. Document Updates . . . . . . . . . . . . . . . . . . 20
A.1. Version -00 to -01 . . . . . . . . . . . . . . . . . . . 21
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 21
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 21
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