DNSSEC Key Rollover Timing Considerations
RFC 7583

Document Type RFC - Informational (October 2015; No errata)
Last updated 2015-10-21
Replaces draft-morris-dnsop-dnssec-key-timing
Stream IETF
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Stream WG state Submitted to IESG for Publication Nov 2014
Document shepherd Tim Wicinski
Shepherd write-up Show (last changed 2014-12-31)
IESG IESG state RFC 7583 (Informational)
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Internet Engineering Task Force (IETF)                         S. Morris
Request for Comments: 7583                                           ISC
Category: Informational                                         J. Ihren
ISSN: 2070-1721                                                   Netnod
                                                            J. Dickinson
                                                                 Sinodun
                                                              W. Mekking
                                                                     Dyn
                                                            October 2015

               DNSSEC Key Rollover Timing Considerations

Abstract

   This document describes the issues surrounding the timing of events
   in the rolling of a key in a DNSSEC-secured zone.  It presents
   timelines for the key rollover and explicitly identifies the
   relationships between the various parameters affecting the process.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc7583.

Morris, et al.                Informational                     [Page 1]
RFC 7583                       Key Timing                   October 2015

Copyright Notice

   Copyright (c) 2015 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
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1. Introduction ....................................................3
      1.1. Key Rolling Considerations .................................3
      1.2. Types of Keys ..............................................4
      1.3. Terminology ................................................4
      1.4. Limitation of Scope ........................................5
   2. Rollover Methods ................................................5
      2.1. ZSK Rollovers ..............................................5
      2.2. KSK Rollovers ..............................................7
   3. Key Rollover Timelines ..........................................8
      3.1. Key States .................................................8
      3.2. ZSK Rollover Timelines ....................................10
           3.2.1. Pre-Publication Method .............................10
           3.2.2. Double-Signature Method ............................12
      3.3. KSK Rollover Timelines ....................................14
           3.3.1. Double-KSK Method ..................................14
           3.3.2. Double-DS Method ...................................17
           3.3.3. Double-RRset Method ................................20
           3.3.4. Interaction with Configured Trust Anchors ..........22
           3.3.5. Introduction of First Keys .........................24
   4. Standby Keys ...................................................24
   5. Algorithm Considerations .......................................25
   6. Summary ........................................................26
   7. Security Considerations ........................................26
   8. Normative References ...........................................26
   Appendix A.  List of Symbols ......................................28
   Acknowledgements ..................................................31
   Authors' Addresses ................................................31

Morris, et al.                Informational                     [Page 2]
RFC 7583                       Key Timing                   October 2015

1.  Introduction

1.1.  Key Rolling Considerations

   When a zone is secured with DNSSEC, the zone manager must be prepared
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