Address Protected Neighbor Discovery for Low-power and Lossy Networks
draft-ietf-6lo-ap-nd-08

Document Type Active Internet-Draft (6lo WG)
Last updated 2018-10-18
Replaces draft-sarikaya-6lo-ap-nd
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6lo                                                      P. Thubert, Ed.
Internet-Draft                                                     Cisco
Updates: 6775 (if approved)                                  B. Sarikaya
Intended status: Standards Track
Expires: April 21, 2019                                         M. Sethi
                                                                Ericsson
                                                               R. Struik
                                             Struik Security Consultancy
                                                        October 18, 2018

 Address Protected Neighbor Discovery for Low-power and Lossy Networks
                        draft-ietf-6lo-ap-nd-08

Abstract

   This document specifies an extension to 6LoWPAN Neighbor Discovery
   (ND) defined in RFC6775 and updated in [I-D.ietf-6lo-rfc6775-update].
   The new extension is called Address Protected Neighbor Discovery (AP-
   ND) and it protects the owner of an address against address theft and
   impersonation attacks in a low-power and lossy network (LLN).  Nodes
   supporting this extension compute a cryptographic identifier (Crypto-
   ID) and use it with one or more of their Registered Addresses.  The
   Crypto-ID identifies the owner of the Registered Address and can be
   used to provide proof of ownership of the Registered Addresses.  Once
   an address is registered with the Crypto-ID and a proof-of-ownership
   is provided, only the owner of that address can modify the
   registration information, thereby enforcing Source Address
   Validation.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
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   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on April 21, 2019.

Thubert, et al.          Expires April 21, 2019                 [Page 1]
Internet-Draft        Address Protection ND for LLN         October 2018

Copyright Notice

   Copyright (c) 2018 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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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.1.  References  . . . . . . . . . . . . . . . . . . . . . . .   4
     2.2.  6LoWPAN sub-glossary  . . . . . . . . . . . . . . . . . .   4
   3.  Updating RFC 6775 . . . . . . . . . . . . . . . . . . . . . .   5
   4.  New Fields and Options  . . . . . . . . . . . . . . . . . . .   6
     4.1.  New Crypto-ID . . . . . . . . . . . . . . . . . . . . . .   6
     4.2.  Updated EARO  . . . . . . . . . . . . . . . . . . . . . .   6
     4.3.  Crypto-ID Parameters Option . . . . . . . . . . . . . . .   8
     4.4.  Nonce Option  . . . . . . . . . . . . . . . . . . . . . .   9
     4.5.  NDP Signature Option  . . . . . . . . . . . . . . . . . .   9
   5.  Protocol Scope  . . . . . . . . . . . . . . . . . . . . . . .   9
   6.  Protocol Flows  . . . . . . . . . . . . . . . . . . . . . . .  10
     6.1.  First Exchange with a 6LR . . . . . . . . . . . . . . . .  11
     6.2.  NDPSO generation and verficiation . . . . . . . . . . . .  13
     6.3.  Multihop Operation  . . . . . . . . . . . . . . . . . . .  14
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  16
     7.1.  Inheriting from RFC 3971  . . . . . . . . . . . . . . . .  16
     7.2.  Related to 6LoWPAN ND . . . . . . . . . . . . . . . . . .  17
     7.3.  ROVR Collisions . . . . . . . . . . . . . . . . . . . . .  17
   8.  IANA considerations . . . . . . . . . . . . . . . . . . . . .  17
     8.1.  CGA Message Type  . . . . . . . . . . . . . . . . . . . .  17
     8.2.  Crypto-Type Subregistry . . . . . . . . . . . . . . . . .  17
   9.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  18
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  18
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