Cryptographic Algorithm Identifier Allocation for DNSSEC
RFC 6014

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Internet Engineering Task Force (IETF)                        P. Hoffman
Request for Comments: 6014                                VPN Consortium
Updates: 4033, 4034, 4035                                  November 2010
Category: Standards Track
ISSN: 2070-1721

        Cryptographic Algorithm Identifier Allocation for DNSSEC

Abstract

   This document specifies how DNSSEC cryptographic algorithm
   identifiers in the IANA registries are allocated.  It changes the
   requirement from "standard required" to "RFC Required".  It does not
   change the list of algorithms that are recommended or required for
   DNSSEC implementations.

Status of This Memo

   This is an Internet Standards Track document.

   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).  Further information on
   Internet Standards is available in 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/rfc6014.

Hoffman                      Standards Track                    [Page 1]
RFC 6014                 DNSSEC Alg. Allocation            November 2010

Copyright Notice

   Copyright (c) 2010 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
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   publication of this document.  Please review these documents
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   described in the Simplified BSD License.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

1.  Introduction

   [RFC2535] specifies that the IANA registry for DNS Security Algorithm
   Numbers be updated by IETF Standards Action only, with the exception
   of two values -- 253 and 254.  In essence, this means that for an
   algorithm to get its own entry in the registry, the algorithm must be
   defined in an RFC on the Standards Track as defined in [RFC2026].
   The requirement from RFC 2535 is repeated in [RFC3755] and the
   combination of [RFC4033], [RFC4034], and [RFC4035].

   RFC 2535 allows algorithms that are not on the Standards Track to use
   private values 253 and 254 in signatures.  In each case, an
   unregistered private name must be included with each use of the
   algorithm in order to differentiate different algorithms that use the
   value.

Hoffman                      Standards Track                    [Page 2]
RFC 6014                 DNSSEC Alg. Allocation            November 2010

2.  Requirements for Assignments in the DNS Security Algorithm Numbers
    Registry

   This document changes the requirement for registration from requiring
   a Standards Track RFC to requiring a published RFC of any type.
   There are two reasons for relaxing the requirement:

   o  There are some algorithms that are useful that may not be able to
      be in a Standards Track RFC.  For any number of reasons, an
      algorithm might not have been evaluated thoroughly enough to be
      able to be put on the Standards Track.  Another example is that
      the algorithm might have unclear intellectual property rights that
      prevents the algorithm from being put on the Standards Track.

   o  Although the size of the registry is restricted (about 250
      entries), new algorithms are proposed infrequently.  It could
      easily be many decades before there is any reason to consider
      restricting the registry again.

   Some developers will care about the standards level of the RFCs that
   are in the registry.  The registry has been updated to reflect the
   current standards level of each algorithm listed.

   To address concerns about the registry eventually filling up, the
   IETF should re-evaluate the requirements for entry into this registry