DNS Certification Authority Authorization (CAA) Resource Record
draft-ietf-pkix-caa-05

The information below is for an old version of the document
Document Type Active Internet-Draft (pkix WG)
Last updated 2012-03-07
Replaces draft-hallambaker-donotissue
Stream IETF
Intended RFC status (None)
Formats plain text pdf html
Stream WG state WG Document
Document shepherd None
IESG IESG state I-D Exists
Telechat date
Responsible AD (None)
Send notices to (None)
Internet Engineering Task Force                          P. Hallam-Baker
Internet-Draft                                         Comodo Group Inc.
Intended status: Standards Track                            R. Stradling
Expires: September 8, 2012                                Comodo CA Ltd.
                                                           March 7, 2012

    DNS Certification Authority Authorization (CAA) Resource Record
                         draft-ietf-pkix-caa-05

Abstract

   The Certification Authority Authorization (CAA) DNS Resource Record
   allows a DNS domain name holder to specify the certificate signing
   certificate(s) authorized to issue certificates for that domain.  CAA
   resource records allow a public Certification Authority to implement
   additional controls to reduce the risk of unintended certificate mis-
   issue.

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
   working documents as Internet-Drafts.  The list of current Internet-
   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 September 8, 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
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of

Hallam-Baker & Stradling  Expires September 8, 2012             [Page 1]
Internet-Draft    Certification Authority Authorization       March 2012

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Definitions  . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1.  Requirements Language  . . . . . . . . . . . . . . . . . .  3
     1.2.  Defined Terms  . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
     2.1.  The CAA RR type  . . . . . . . . . . . . . . . . . . . . .  5
   3.  Certification Authority Processing . . . . . . . . . . . . . .  7
     3.1.  Canonical Domain Name  . . . . . . . . . . . . . . . . . .  8
     3.2.  Use of DNS Security  . . . . . . . . . . . . . . . . . . .  8
     3.3.  Archive  . . . . . . . . . . . . . . . . . . . . . . . . .  8
   4.  Mechanism  . . . . . . . . . . . . . . . . . . . . . . . . . .  8
     4.1.  Syntax . . . . . . . . . . . . . . . . . . . . . . . . . .  8
       4.1.1.  Canonical Presentation Format  . . . . . . . . . . . . 10
     4.2.  CAA issue Property . . . . . . . . . . . . . . . . . . . . 10
     4.3.  CAA iodef Property . . . . . . . . . . . . . . . . . . . . 11
   5.  Security Considerations  . . . . . . . . . . . . . . . . . . . 12
     5.1.  Mis-Issue by Authorized Certification Authority  . . . . . 12
     5.2.  Suppression or spoofing of CAA records . . . . . . . . . . 13
       5.2.1.  Certification Authorities  . . . . . . . . . . . . . . 13
     5.3.  Denial of Service  . . . . . . . . . . . . . . . . . . . . 13
       5.3.1.  Issuer . . . . . . . . . . . . . . . . . . . . . . . . 13
     5.4.  Abuse of the Critical Flag . . . . . . . . . . . . . . . . 14
   6.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 14
     6.1.  Registration of the CAA Resource Record Type . . . . . . . 14
     6.2.  Certification Authority Authorization Properties . . . . . 14
   7.  Normative References . . . . . . . . . . . . . . . . . . . . . 15
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 16

Hallam-Baker & Stradling  Expires September 8, 2012             [Page 2]
Internet-Draft    Certification Authority Authorization       March 2012

1.  Definitions

1.1.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
Show full document text