Integrity Protection for the Neighborhood Discovery Protocol (NHDP) and Optimized Link State Routing Protocol Version 2 (OLSRv2)
RFC 7183

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Internet Engineering Task Force (IETF)                        U. Herberg
Request for Comments: 7183               Fujitsu Laboratories of America
Updates: 6130, 7181                                          C. Dearlove
Category: Standards Track                                BAE Systems ATC
ISSN: 2070-1721                                               T. Clausen
                                                LIX, Ecole Polytechnique
                                                              April 2014

Integrity Protection for the Neighborhood Discovery Protocol (NHDP) and
        Optimized Link State Routing Protocol Version 2 (OLSRv2)

Abstract

   This document specifies integrity and replay protection for the
   Mobile Ad Hoc Network (MANET) Neighborhood Discovery Protocol (NHDP)
   and the Optimized Link State Routing Protocol version 2 (OLSRv2).
   This protection is achieved by using an HMAC-SHA-256 Integrity Check
   Value (ICV) TLV and a Timestamp TLV based on Portable Operating
   System Interface (POSIX) time.

   The mechanism in this specification can also be used for other
   protocols that use the generalized packet/message format described in
   RFC 5444.

   This document updates RFC 6130 and RFC 7181 by mandating the
   implementation of this integrity and replay protection in NHDP and
   OLSRv2.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc7183.

Herberg, et al.              Standards Track                    [Page 1]
RFC 7183        Integrity Protection for NHDP and OLSRv2      April 2014

Copyright Notice

   Copyright (c) 2014 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
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents
   1. Introduction ....................................................3
   2. Terminology .....................................................4
   3. Applicability Statement .........................................5
   4. Protocol Overview and Functioning ...............................6
   5. Parameters ......................................................7
   6. Message Generation and Processing ...............................9
      6.1. Message Content ............................................9
      6.2. Message Generation ........................................10
      6.3. Message Processing ........................................11
           6.3.1. Validating a Message Based on Timestamp ............11
           6.3.2. Validating a Message Based on Integrity Check ......12
   7. Provisioning of Routers ........................................12
   8. Security Considerations ........................................12
      8.1. Mitigated Attacks .........................................13
           8.1.1. Identity Spoofing ..................................13
           8.1.2. Link Spoofing ......................................13
           8.1.3. Replay Attack ......................................13
      8.2. Limitations ...............................................13
   9. Acknowledgments ................................................14
   10. References ....................................................14
      10.1. Normative References .....................................14
      10.2. Informative References ...................................14

Herberg, et al.              Standards Track                    [Page 2]
RFC 7183        Integrity Protection for NHDP and OLSRv2      April 2014

1.  Introduction

   This specification updates [RFC6130] and [RFC7181] by defining
   mandatory-to-implement security mechanisms (for integrity and replay
   protection).  A deployment of these protocols may choose to employ an
   alternative(s) to these mechanisms; in particular, it may choose to
   protect packets rather than messages, it may choose to use an
   alternative Integrity Check Value (ICV) with preferred properties,