Clarifications and Implementation Notes for DNSSECbis
draft-ietf-dnsext-dnssec-bis-updates-18

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Document Type Active Internet-Draft (dnsext WG)
Last updated 2012-06-07 (latest revision 2012-04-30)
Replaces draft-weiler-dnsext-dnssec-bis-updates
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Send notices to dnsext-chairs@tools.ietf.org, draft-ietf-dnsext-dnssec-bis-updates@tools.ietf.org
Network Working Group                                          S. Weiler
Internet-Draft                                              SPARTA, Inc.
Updates: 4033, 4034, 4035, 5155                                D. Blacka
(if approved)                                             Verisign, Inc.
Intended status: Standards Track                          April 30, 2012
Expires: November 1, 2012

         Clarifications and Implementation Notes for DNSSECbis
                draft-ietf-dnsext-dnssec-bis-updates-18

Abstract

   This document is a collection of technical clarifications to the
   DNSSECbis document set.  It is meant to serve as a resource to
   implementors as well as a repository of DNSSECbis errata.

   This document updates the core DNSSECbis documents (RFC4033, RFC4034,
   and RFC4035) as well as the NSEC3 specification (RFC5155).  It also
   defines NSEC3 and SHA-2 as core parts of the DNSSECbis specification.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on November 1, 2012.

Copyright Notice

   Copyright (c) 2012 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

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   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
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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
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   it for publication as an RFC or to translate it into languages other
   than English.

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Table of Contents

   1.  Introduction and Terminology . . . . . . . . . . . . . . . . .  4
     1.1.  Structure of this Document . . . . . . . . . . . . . . . .  4
     1.2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  4
   2.  Important Additions to DNSSSECbis  . . . . . . . . . . . . . .  4
     2.1.  NSEC3 Support  . . . . . . . . . . . . . . . . . . . . . .  4
     2.2.  SHA-2 Support  . . . . . . . . . . . . . . . . . . . . . .  5
   3.  Scaling Concerns . . . . . . . . . . . . . . . . . . . . . . .  5
     3.1.  Implement a BAD cache  . . . . . . . . . . . . . . . . . .  5
   4.  Security Concerns  . . . . . . . . . . . . . . . . . . . . . .  5
     4.1.  Clarifications on Non-Existence Proofs . . . . . . . . . .  5
     4.2.  Validating Responses to an ANY Query . . . . . . . . . . .  6
     4.3.  Check for CNAME  . . . . . . . . . . . . . . . . . . . . .  6
     4.4.  Insecure Delegation Proofs . . . . . . . . . . . . . . . .  6
   5.  Interoperability Concerns  . . . . . . . . . . . . . . . . . .  7
     5.1.  Errors in Canonical Form Type Code List  . . . . . . . . .  7
     5.2.  Unknown DS Message Digest Algorithms . . . . . . . . . . .  7
     5.3.  Private Algorithms . . . . . . . . . . . . . . . . . . . .  8
     5.4.  Caution About Local Policy and Multiple RRSIGs . . . . . .  8
     5.5.  Key Tag Calculation  . . . . . . . . . . . . . . . . . . .  9
     5.6.  Setting the DO Bit on Replies  . . . . . . . . . . . . . .  9
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