6tisch Zero-Touch Secure Join protocol
draft-ietf-6tisch-dtsecurity-zerotouch-join-01
6tisch Working Group M. Richardson
Internet-Draft Sandelman Software Works
Intended status: Informational B. Damm
Expires: May 3, 2018 Silver Spring Networks
October 30, 2017
6tisch Zero-Touch Secure Join protocol
draft-ietf-6tisch-dtsecurity-zerotouch-join-01
Abstract
This document describes a zero-touch mechanism to enroll a new device
(the "pledge") into a IEEE802.15.4 TSCH network using the 6tisch
signaling mechanisms. The resulting device will obtain a domain
specific credential that can be used with either 802.15.9 per-host
pair keying protocols, or to obtain the network-wide key from a
coordinator. The mechanism describe her is an augmentation to the
one-touch mechanism described in [I-D.ietf-6tisch-minimal-security].
Status of This Memo
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This Internet-Draft will expire on May 3, 2018.
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Internet-Draft 6tisch Zero-Touch Secure Join protocol October 2017
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 5
1.2. Scope of solution . . . . . . . . . . . . . . . . . . . . 6
1.3. Leveraging the new key infrastructure / next steps . . . 6
1.3.1. Key Distribution Process . . . . . . . . . . . . . . 7
2. Architectural Overview . . . . . . . . . . . . . . . . . . . 7
2.1. Behaviour of a Pledge . . . . . . . . . . . . . . . . . . 7
2.2. Secure Imprinting using Vouchers . . . . . . . . . . . . 9
2.3. Initial Device Identifier . . . . . . . . . . . . . . . . 9
2.4. Protocol Flow . . . . . . . . . . . . . . . . . . . . . . 10
2.4.1. Architectural component: Pledge . . . . . . . . . . . 11
2.4.2. Architectural component: Stateless IPIP Proxy . . . . 12
2.4.3. Architectural component: Domain Registrar . . . . . . 12
2.4.4. Architectural component: Vendor Service . . . . . . . 12
2.5. Lack of realtime clock . . . . . . . . . . . . . . . . . 12
2.6. Cloud Registrar . . . . . . . . . . . . . . . . . . . . . 13
2.7. Determining the MASA to contact . . . . . . . . . . . . . 13
3. Voucher-Request artifact . . . . . . . . . . . . . . . . . . 13
3.1. Tree Diagram . . . . . . . . . . . . . . . . . . . . . . 13
3.2. SID values . . . . . . . . . . . . . . . . . . . . . . . 13
3.3. YANG Module . . . . . . . . . . . . . . . . . . . . . . . 14
4. Proxy details . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1. Pledge discovery of Proxy . . . . . . . . . . . . . . . . 16
4.2. CoAP connection to Registrar . . . . . . . . . . . . . . 16
4.3. HTTPS proxy connection to Registrar . . . . . . . . . . . 16
4.4. Proxy discovery of Registrar . . . . . . . . . . . . . . 16
5. Protocol Details . . . . . . . . . . . . . . . . . . . . . . 16
5.1. BRSKI-EST (D)TLS establishment details . . . . . . . . . 17
5.1.1. BRSKI-EST CoAP/DTLS estasblishment details . . . . . 17
5.1.2. BRSKI-EST CoAP/EDHOC estasblishment details . . . . . 17
5.2. Pledge Requests Voucher from the Registrar . . . . . . . 18
5.3. BRSKI-MASA TLS establishment details . . . . . . . . . . 18
5.4. Registrar Requests Voucher from MASA . . . . . . . . . . 18
5.5. Voucher Response . . . . . . . . . . . . . . . . . . . . 18
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