Automating DNSSEC delegation trust maintenance
draft-kumari-ogud-dnsop-cds-04

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Document Type Active Internet-Draft (individual)
Last updated 2013-10-02
Replaced by rfc7344, draft-ietf-dnsop-delegation-trust-maintainance
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dnsop                                                          W. Kumari
Internet-Draft                                                    Google
Intended status: Informational                            O. Gudmundsson
Expires: April 05, 2014                                    Shinkuro Inc.
                                                              G. Barwood

                                                        October 02, 2013

             Automating DNSSEC delegation trust maintenance
                     draft-kumari-ogud-dnsop-cds-04

Abstract

   This document describes a method to allow DNS operators to more
   easily update DNSSEC Key Signing Keys using DNS as communication
   channel.  This document does not address the initial configuration of
   trust anchors for a domain.  The technique described is aimed at
   delegations in which it is currently hard to move information from
   the child to parent.

Status of This Memo

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

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   This Internet-Draft will expire on April 05, 2014.

Copyright Notice

   Copyright (c) 2013 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

Kumari, et al.           Expires April 05, 2014                 [Page 1]
Internet-Draft         automating delegation maint          October 2013

   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 . . . . . . . . . . . . . . . . . . . . . . .   3
     1.2.  Requirements notation . . . . . . . . . . . . . . . . . .   4
   2.  Background  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.1.  DNS delegations . . . . . . . . . . . . . . . . . . . . .   4
     2.2.  Relationship between Parent and Child DNS operator  . . .   5
       2.2.1.  Solution Space  . . . . . . . . . . . . . . . . . . .   6
       2.2.2.  DNSSEC key change process . . . . . . . . . . . . . .   6
   3.  CTA (Child Trust Anchor) record definition  . . . . . . . . .   7
     3.1.  CTA Resource Record Format  . . . . . . . . . . . . . . .   7
       3.1.1.  CTA Wire Format . . . . . . . . . . . . . . . . . . .   7
       3.1.2.  CTA Presentation Format . . . . . . . . . . . . . . .   8
   4.  Automating DS maintainance with CTA records . . . . . . . . .   9
     4.1.  CTA processing rules  . . . . . . . . . . . . . . . . . .   9
   5.  Child's CTA Publication . . . . . . . . . . . . . . . . . . .   9
   6.  Parent side CTA Consumption . . . . . . . . . . . . . . . . .   9
     6.1.  Detecting a changed CTA . . . . . . . . . . . . . . . . .   9
       6.1.1.  CTA Polling . . . . . . . . . . . . . . . . . . . . .  10
       6.1.2.  Other mechanisms  . . . . . . . . . . . . . . . . . .  10
     6.2.  Usign the new CTA . . . . . . . . . . . . . . . . . . . .  11
       6.2.1.  Parent calculates DS  . . . . . . . . . . . . . . . .  11
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  12
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  12
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  13
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  13
     10.2.  Informative References . . . . . . . . . . . . . . . . .  14
   Appendix A.  RRR background . . . . . . . . . . . . . . . . . . .  15
   Appendix B.  Changes / Author Notes.  . . . . . . . . . . . . . .  15
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  17

1.  Introduction

   When a DNS operator first signs their zone, they need to communicate
   their DS record(s) (or DNSKEY(s)) to their parent through some out-
   of-band method to complete the chain of trust.

   Each time the child changes/rolls the key that is represented in the
   parent, the new and/or deleted key information has to be communicated
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