Minimal Security Framework for 6TiSCH
draft-ietf-6tisch-minimal-security-03
6TiSCH Working Group M. Vucinic, Ed.
Internet-Draft Inria
Intended status: Standards Track J. Simon
Expires: December 17, 2017 Linear Technology
K. Pister
University of California Berkeley
M. Richardson
Sandelman Software Works
June 15, 2017
Minimal Security Framework for 6TiSCH
draft-ietf-6tisch-minimal-security-03
Abstract
This document describes the minimal mechanisms required to support
secure enrollment of a pledge, a device being added to an IPv6 over
the TSCH mode of IEEE 802.15.4e (6TiSCH) network. It assumes that
the pledge has been provisioned with a credential that is relevant to
the deployment - the "one-touch" scenario. The goal of this
configuration is to set link-layer keys, and to establish a secure
end-to-end session between each pledge and the join registrar who may
use that to further configure the pledge. Additional security
behaviors and mechanisms may be added on top of this minimal
framework.
Status of This Memo
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This Internet-Draft will expire on December 17, 2017.
Vucinic, et al. Expires December 17, 2017 [Page 1]
Internet-Draft Minimal Security Framework for 6TiSCH June 2017
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. One-Touch Assumptions . . . . . . . . . . . . . . . . . . . . 4
4. Join Overview . . . . . . . . . . . . . . . . . . . . . . . . 4
4.1. Step 1 - Enhanced Beacon . . . . . . . . . . . . . . . . 5
4.2. Step 2 - Neighbor Discovery . . . . . . . . . . . . . . . 6
4.3. Step 3 - Security Handshake . . . . . . . . . . . . . . . 6
4.4. Step 4 - Simple Join Protocol - Join Request . . . . . . 8
4.5. Step 5 - Simple Join Protocol - Join Response . . . . . . 8
5. Architectural Overview and Communication through Join Proxy . 9
5.1. Stateless-Proxy CoAP Option . . . . . . . . . . . . . . . 9
6. Security Handshake . . . . . . . . . . . . . . . . . . . . . 10
7. Simple Join Protocol Specification . . . . . . . . . . . . . 11
7.1. OSCOAP Security Context Instantiation . . . . . . . . . . 12
7.2. Specification of Join Request . . . . . . . . . . . . . . 13
7.3. Specification of Join Response . . . . . . . . . . . . . 13
8. Mandatory to Implement Algorithms and Certificate Format . . 15
9. Link-layer Requirements . . . . . . . . . . . . . . . . . . . 15
10. Rekeying and Rejoin . . . . . . . . . . . . . . . . . . . . . 16
11. Key Derivations . . . . . . . . . . . . . . . . . . . . . . . 16
12. Security Considerations . . . . . . . . . . . . . . . . . . . 16
13. Privacy Considerations . . . . . . . . . . . . . . . . . . . 17
14. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 18
14.1. CoAP Option Numbers Registry . . . . . . . . . . . . . . 18
15. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 18
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