LDP Hello Cryptographic Authentication
draft-zheng-mpls-ldp-hello-crypto-auth-03

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Document Type Active Internet-Draft (individual)
Last updated 2012-03-08
Replaced by draft-ietf-mpls-ldp-hello-crypto-auth, rfc7349
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Network Working Group                                           L. Zheng
Internet-Draft                                                   M. Chen
Intended status: Standards Track                     Huawei Technologies
Expires: September 10, 2012                                    M. Bhatia
                                                          Alcatel-Lucent
                                                           March 9, 2012

                 LDP Hello Cryptographic Authentication
             draft-zheng-mpls-ldp-hello-crypto-auth-03.txt

Abstract

   This document introduces a new optional Cryptographic Authentication
   TLV that LDP can use to secure its Hello messages.  It secures the
   Hello messages against spoofing attacks and some well known attacks
   against the IP header.  This document describes how the National
   Institute of Standards and Technology (NIST) Secure Hash Standard
   family of algorithms should be used to secure LDP Hello messages.

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Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

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
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   This Internet-Draft will expire on September 10, 2012.

Copyright Notice

   Copyright (c) 2012 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
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   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.

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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4

   2.  Cryptographic Authentication TLV . . . . . . . . . . . . . . .  6
     2.1.  Optional Parameter for Hello Message . . . . . . . . . . .  6
     2.2.  Cryptographic Authentication TLV Encoding  . . . . . . . .  6

   3.  Cryptographic Aspects  . . . . . . . . . . . . . . . . . . . .  8
     3.1.  Cryptographic Key  . . . . . . . . . . . . . . . . . . . .  8
     3.2.  Hash . . . . . . . . . . . . . . . . . . . . . . . . . . .  8
     3.3.  Result . . . . . . . . . . . . . . . . . . . . . . . . . .  9

   4.  Processing Hello Message Using Cryptographic Authentication  . 10
     4.1.  Transmission Using Cryptographic Authentication  . . . . . 10
     4.2.  Receipt Using Cryptographic Authentication . . . . . . . . 10

   5.  Security Considerations  . . . . . . . . . . . . . . . . . . . 11

   6.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 12

   7.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 13

   8.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 14
     8.1.  Normative References . . . . . . . . . . . . . . . . . . . 14
     8.2.  References . . . . . . . . . . . . . . . . . . . . . . . . 14
     8.3.  Informative References . . . . . . . . . . . . . . . . . . 14

   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 15

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1.  Introduction

   The Label Distribution Protocol (LDP) [RFC5036] utilizes LDP sessions
   that run between LDP peers.  The peers may be directly connected at
   the link level or may be remote.  A label switching router (LSR) that
   speaks LDP may be configured with the identity of its peers or may
   discover them using the LDP Hello message sent encapsulated in UDP
   that may be addressed to "all routers on this subnet" or to a
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