Automating DNSSEC Delegation Trust Maintenance
draft-ietf-dnsop-delegation-trust-maintainance-12

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Document Type Active Internet-Draft (dnsop WG)
Last updated 2014-04-28
Replaces draft-kumari-ogud-dnsop-cds
Stream IETF
Intended RFC status Informational
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dnsop                                                          W. Kumari
Internet-Draft                                                    Google
Intended status: Informational                            O. Gudmundsson
Expires: October 30, 2014                                  Shinkuro Inc.
                                                              G. Barwood

                                                          April 28, 2014

             Automating DNSSEC Delegation Trust Maintenance
           draft-ietf-dnsop-delegation-trust-maintainance-12

Abstract

   This document describes a method to allow DNS operators to more
   easily update DNSSEC Key Signing Keys using the DNS as communication
   channel.  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.

   Internet-Drafts are working documents of the Internet Engineering
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   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
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   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 October 30, 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

Kumari, et al.          Expires October 30, 2014                [Page 1]
Internet-Draft      Automating Delegation Trust Maint         April 2014

   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
     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 . . . . . . . . . . . . . .   7
   3.  CDS / CDNSKEY (Child DS / Child DNSKEY) Record Definitions  .   7
     3.1.  CDS Resource Record Format  . . . . . . . . . . . . . . .   8
     3.2.  CDNSKEY Resource Record Format  . . . . . . . . . . . . .   8
   4.  Automating DS Maintenance With CDS / CDNSKEY records  . . . .   8
     4.1.  CDS / CDNSKEY Processing Rules  . . . . . . . . . . . . .   8
   5.  CDS / CDNSKEY Publication . . . . . . . . . . . . . . . . . .   9
   6.  Parent Side CDS / CDNSKEY Consumption . . . . . . . . . . . .   9
     6.1.  Detecting a Changed CDS / CDNSKEY . . . . . . . . . . . .   9
       6.1.1.  CDS / CDNSKEY Polling . . . . . . . . . . . . . . . .  10
       6.1.2.  Polling Triggers  . . . . . . . . . . . . . . . . . .  10
     6.2.  Using the New CDS / CDNSKEY Records . . . . . . . . . . .  11
       6.2.1.  Parent Calculates DS  . . . . . . . . . . . . . . . .  11
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  12
   8.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .  12
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  12
   10. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  14
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  14
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  14
     11.2.  Informative References . . . . . . . . . . . . . . . . .  15
   Appendix A.  RRR background . . . . . . . . . . . . . . . . . . .  15
   Appendix B.  Changes / Author Notes.  . . . . . . . . . . . . . .  16
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  20

1.  Introduction

   The first time a DNS operator signs a zone, they need to communicate
   the keying material to their parent through some out-of-band method
   to complete the chain of trust.  Depending on the desires of the
   parent, the child might send their DNSKEY record, a DS record, or
   both.

   Each time the child changes the key that is represented in the
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