A Root Key Trust Anchor Sentinel for DNSSEC
draft-ietf-dnsop-kskroll-sentinel-17

Document Type Active Internet-Draft (dnsop WG)
Last updated 2018-11-20 (latest revision 2018-10-21)
Replaces draft-huston-kskroll-sentinel
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Send notices to Benno Overeinder <benno@NLnetLabs.nl>, Tim Wicinski <tjw.ietf@gmail.com>
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DNSOP                                                          G. Huston
Internet-Draft                                                  J. Damas
Intended status: Standards Track                                   APNIC
Expires: April 23, 2019                                        W. Kumari
                                                                  Google
                                                        October 20, 2018

              A Root Key Trust Anchor Sentinel for DNSSEC
                  draft-ietf-dnsop-kskroll-sentinel-17

Abstract

   The DNS Security Extensions (DNSSEC) were developed to provide origin
   authentication and integrity protection for DNS data by using digital
   signatures.  These digital signatures can be verified by building a
   chain of trust starting from a trust anchor and proceeding down to a
   particular node in the DNS.  This document specifies a mechanism that
   will allow an end user and third parties to determine the trusted key
   state for the root key of the resolvers that handle that user's DNS
   queries.  Note that this method is only applicable for determining
   which keys are in the trust store for the root key.

   [ This document is being collaborated on in Github at:
   https://github.com/APNIC-Labs/draft-kskroll-sentinel.  The most
   recent version of the document, open issues, etc should all be
   available here.  The authors (gratefully) accept pull requests.  RFC
   Editor, please remove text in square brackets before publication. ]

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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   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 April 23, 2019.

Huston, et al.           Expires April 23, 2019                 [Page 1]
Internet-Draft         DNSSEC Trusted Key Sentinel          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
   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
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Sentinel Mechanism in Resolvers . . . . . . . . . . . . . . .   4
     2.1.  Preconditions . . . . . . . . . . . . . . . . . . . . . .   5
     2.2.  Special Processing  . . . . . . . . . . . . . . . . . . .   5
   3.  Sentinel Tests for a Single DNS Resolver  . . . . . . . . . .   6
     3.1.  Forwarders  . . . . . . . . . . . . . . . . . . . . . . .   9
   4.  Sentinel Tests for Multiple Resolvers . . . . . . . . . . . .  10
     4.1.  Test Scenario and Objective . . . . . . . . . . . . . . .  10
     4.2.  Test Assumptions  . . . . . . . . . . . . . . . . . . . .  10
     4.3.  Test Procedure  . . . . . . . . . . . . . . . . . . . . .  11
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  12
   6.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .  13
   7.  Implementation Experience . . . . . . . . . . . . . . . . . .  13
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  14
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  14
   10. Change Log  . . . . . . . . . . . . . . . . . . . . . . . . .  15
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  19
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  19
     11.2.  Informative References . . . . . . . . . . . . . . . . .  19
   Appendix A.  Protocol Walkthrough Example . . . . . . . . . . . .  20
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  23

1.  Introduction

   The DNS Security Extensions (DNSSEC) [RFC4033], [RFC4034] and
   [RFC4035] were developed to provide origin authentication and
   integrity protection for DNS data by using digital signatures.
   DNSSEC uses Key Tags to efficiently match signatures to the keys from
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