6tisch Secure Join protocol
draft-ietf-6tisch-dtsecurity-secure-join-01

Document Type Active Internet-Draft (6tisch WG)
Last updated 2017-02-25
Replaces draft-richardson-6tisch-dtsecurity-secure-join
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6tisch Working Group                                       M. Richardson
Internet-Draft                                  Sandelman Software Works
Intended status: Informational                         February 25, 2017
Expires: August 29, 2017

                      6tisch Secure Join protocol
              draft-ietf-6tisch-dtsecurity-secure-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

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on August 29, 2017.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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   include Simplified BSD License text as described in Section 4.e of

Richardson               Expires August 29, 2017                [Page 1]
Internet-Draft             6tisch-secure-join              February 2017

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
     1.2.  Credentials . . . . . . . . . . . . . . . . . . . . . . .   4
       1.2.1.  One-Touch Assumptions . . . . . . . . . . . . . . . .   4
       1.2.2.  Factory provided credentials (if any) . . . . . . . .   4
       1.2.3.  Credentials to be introduced  . . . . . . . . . . . .   5
     1.3.  Network Assumptions . . . . . . . . . . . . . . . . . . .   5
       1.3.1.  Security above and below IP . . . . . . . . . . . . .   5
       1.3.2.  Join network assumptions  . . . . . . . . . . . . . .   6
       1.3.3.  Number and cost of round trips  . . . . . . . . . . .   6
       1.3.4.  Size of packets, number of fragments  . . . . . . . .   7
     1.4.  Target end-state for join process . . . . . . . . . . . .   7
   2.  Join Protocol . . . . . . . . . . . . . . . . . . . . . . . .   7
     2.1.  Key Agreement process . . . . . . . . . . . . . . . . . .   8
     2.2.  Provisional Enrollment process  . . . . . . . . . . . . .   8
     2.3.  Key Distribution Process  . . . . . . . . . . . . . . . .   9
   3.  YANG model for BRSKI objects  . . . . . . . . . . . . . . . .   9
     3.1.  Description of Pledge States in Join Process  . . . . . .  10
   4.  Definition of managed objects for zero-touch bootstrap  . . .  10
   5.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .  11
     5.1.  Privacy Considerations for Production network . . . . . .  11
     5.2.  Privacy Considerations for New Pledges  . . . . . . . . .  11
       5.2.1.  EUI-64 derived address for join time IID  . . . . . .  12
     5.3.  Privacy Considerations for Join Assistant . . . . . . . .  12
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  12
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  12
   8.  Protocol Definition . . . . . . . . . . . . . . . . . . . . .  12
   9.  Acknwoledgements  . . . . . . . . . . . . . . . . . . . . . .  12
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  12
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  12
     10.2.  Informative References . . . . . . . . . . . . . . . . .  15
     10.3.  URIs . . . . . . . . . . . . . . . . . . . . . . . . . .  16
   Appendix A.  appendix . . . . . . . . . . . . . . . . . . . . . .  16
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