Automating DNSSEC Delegation Trust Maintenance
draft-ietf-dnsop-delegation-trust-maintainance-05

The information below is for an old version of the document
Document Type Active Internet-Draft (dnsop WG)
Last updated 2014-04-12 (latest revision 2014-04-11)
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 13, 2014                                  Shinkuro Inc.
                                                              G. Barwood

                                                          April 11, 2014

             Automating DNSSEC Delegation Trust Maintenance
           draft-ietf-dnsop-delegation-trust-maintainance-05

Abstract

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

   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 http://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 October 13, 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

Kumari, et al.          Expires October 13, 2014                [Page 1]
Internet-Draft      Automating Delegation Trust Maint         April 2014

   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
     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 Maintainance With CDS/CDNSKEY records . . . . .   8
     4.1.  CDS / CDNSKEY Processing Rules  . . . . . . . . . . . . .   9
   5.  CDS / CDNSKEY Publication . . . . . . . . . . . . . . . . . .   9
   6.  Parent Side CDS / CDNSKEY Consumption . . . . . . . . . . . .   9
     6.1.  Detecting a Changed CDS / CDNSKEY . . . . . . . . . . . .  10
       6.1.1.  CDS / CDNSKEY Polling . . . . . . . . . . . . . . . .  10
       6.1.2.  Other Mechanisms  . . . . . . . . . . . . . . . . . .  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  . . . . . . . . . . . . . . . . . . . . . . .  18

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
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