Layer-3 Discovery and Liveness Signing
draft-ietf-lsvr-l3dl-signing-02

Document Type Active Internet-Draft (lsvr WG)
Authors Randy Bush  , Russ Housley  , Rob Austein 
Last updated 2021-02-12
Replaces draft-ymbk-lsvr-l3dl-signing
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Network Working Group                                            R. Bush
Internet-Draft                                              Arrcus & IIJ
Intended status: Standards Track                              R. Housley
Expires: August 16, 2021                                  Vigil Security
                                                              R. Austein
                                                                  Arrcus
                                                       February 12, 2021

                 Layer-3 Discovery and Liveness Signing
                    draft-ietf-lsvr-l3dl-signing-02

Abstract

   The Layer-3 Discovery and Liveness protocol OPEN PDU may contain a
   public key and a certificate, which can be used to verify signatures
   on subsequent PDUs.  This document describes two mechanisms based on
   digital signatures, one that is Trust On First Use (TOFU), and one
   that uses a trust anchor signture over the public key to provide
   authentication as well as session integrity.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in BCP
   14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.

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
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   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 August 16, 2021.

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Copyright Notice

   Copyright (c) 2021 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
   (https://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  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Signature Algorithm Identifiers . . . . . . . . . . . . . . .   3
   3.  Trust On First Use Method . . . . . . . . . . . . . . . . . .   3
     3.1.  Signing a PDU . . . . . . . . . . . . . . . . . . . . . .   4
     3.2.  Verifying the OPEN PDU  . . . . . . . . . . . . . . . . .   4
     3.3.  Verifying Other PDUs  . . . . . . . . . . . . . . . . . .   5
   4.  Public Key Infrastructure Method  . . . . . . . . . . . . . .   5
     4.1.  Signing OPEN PDU with PKI . . . . . . . . . . . . . . . .   6
     4.2.  Verifying OPEN PDU with PKI . . . . . . . . . . . . . . .   6
   5.  Local Policy  . . . . . . . . . . . . . . . . . . . . . . . .   6
   6.  NEWKEY, Key Roll  . . . . . . . . . . . . . . . . . . . . . .   6
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .   9
     9.2.  Informative References  . . . . . . . . . . . . . . . . .   9
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   The Layer-3 Discovery and Liveness protocol [I-D.ietf-lsvr-l3dl] OPEN
   PDU contains an algorithm identifier, a key, and a L3DL certificate,
   which can be used to verify signatures on subsequent PDUs.  This
   document describes two methods of key generation and signing for use
   by L3DL, Trust On First Use (TOFU) and a PKI-based mechanism to
   provide authentication as well as session integrity.

   The Key in the OPEN PDU SHOULD be the public key of an asymmetric key
   pair.  The sender signs with the private key, of course.  The device
   sending the OPEN PDU may use one key for all links, a different key
   for each link, or some mix(es) thereof.

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