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Use of GOST Signature Algorithms in DNSKEY and RRSIG Resource Records for DNSSEC
RFC 5933

Internet Engineering Task Force (IETF)                  V. Dolmatov, Ed.
Request for Comments: 5933                                   A. Chuprina
Category: Standards Track                                     I. Ustinov
ISSN: 2070-1721                                           Cryptocom Ltd.
                                                               July 2010

               Use of GOST Signature Algorithms in DNSKEY
                 and RRSIG Resource Records for DNSSEC

Abstract

   This document describes how to produce digital signatures and hash
   functions using the GOST R 34.10-2001 and GOST R 34.11-94 algorithms
   for DNSKEY, RRSIG, and DS resource records, for use in the Domain
   Name System Security Extensions (DNSSEC).

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/rfc5933.

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
   (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.

Dolmatov, et al.             Standards Track                    [Page 1]
RFC 5933            Use of GOST Signatures in DNSSEC           July 2010

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 2
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . 3
   2.  DNSKEY Resource Records . . . . . . . . . . . . . . . . . . . . 3
     2.1.  Using a Public Key with Existing Cryptographic
           Libraries . . . . . . . . . . . . . . . . . . . . . . . . . 3
     2.2.  GOST DNSKEY RR Example  . . . . . . . . . . . . . . . . . . 4
   3.  RRSIG Resource Records  . . . . . . . . . . . . . . . . . . . . 4
     3.1.  RRSIG RR Example  . . . . . . . . . . . . . . . . . . . . . 5
   4.  DS Resource Records . . . . . . . . . . . . . . . . . . . . . . 5
     4.1.  DS RR Example . . . . . . . . . . . . . . . . . . . . . . . 5
   5.  Deployment Considerations . . . . . . . . . . . . . . . . . . . 6
     5.1.  Key Sizes . . . . . . . . . . . . . . . . . . . . . . . . . 6
     5.2.  Signature Sizes . . . . . . . . . . . . . . . . . . . . . . 6
     5.3.  Digest Sizes  . . . . . . . . . . . . . . . . . . . . . . . 6
   6.  Implementation Considerations . . . . . . . . . . . . . . . . . 6
     6.1.  Support for GOST Signatures . . . . . . . . . . . . . . . . 6
     6.2.  Support for NSEC3 Denial of Existence . . . . . . . . . . . 6
   7.  Security Considerations . . . . . . . . . . . . . . . . . . . . 6
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 7
   9.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . 7
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . . . 7
     10.1. Normative References  . . . . . . . . . . . . . . . . . . . 7
     10.2. Informative References  . . . . . . . . . . . . . . . . . . 8

1.  Introduction

   The Domain Name System (DNS) is the global hierarchical distributed
   database for Internet Naming.  The DNS has been extended to use
   cryptographic keys and digital signatures for the verification of the
   authenticity and integrity of its data.  RFC 4033 [RFC4033], RFC 4034
   [RFC4034], and RFC 4035 [RFC4035] describe these DNS Security
   Extensions, called DNSSEC.

   RFC 4034 describes how to store DNSKEY and RRSIG resource records,
   and specifies a list of cryptographic algorithms to use.  This
   document extends that list with the signature and hash algorithms
   GOST R 34.10-2001 ([GOST3410], [RFC5832]) and GOST R 34.11-94
   ([GOST3411], [RFC5831]), and specifies how to store DNSKEY data and
   how to produce RRSIG resource records with these algorithms.

   Familiarity with DNSSEC and with GOST signature and hash algorithms
   is assumed in this document.

   The term "GOST" is not officially defined, but is usually used to

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