INTERNET DRAFT                                               R. Housley
Intended Status: Informational                           Vigil Security
Expires: 11 February 2010                                11 August 2009

 The application/pkix-attr-cert Content Type for Attribute Certificates

Status of this Memo

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   document authors.  All rights reserved.

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   This document specifies a MIME content type for use with attribute
   certificates as defined in RFC 3281.

Housley                                                         [Page 1]

INTERNET DRAFT                                               August 2009

1. Introduction

   RFC 2528 [RFC2585] defines the MIME content types for public key
   certificates and certificate revocation lists (CRLs).  This document
   specifies a MIME content type for use with attribute certificates as
   defined in RFC 3281 [RFC3281].

2. IANA Considerations

   The content type for an attribute certificate is

      MIME media type name: application

      MIME subtype name: pkix-attr-cert

      Required parameters: None

      Optional parameters: version (default value is "1")

      Encoding considerations: will be none for 8-bit transports and
      most likely Base64 for SMTP or other 7-bit transports

      Security considerations: Carries an attribute certificate to
      provide authorization information

      Interoperability considerations: None

      Published specification: RFC 3281

      Applications which use this media type: Any MIME-complaint

      Additional information:
        Magic number(s): None
        File extension(s): .AC
        Macintosh File Type Code(s): none

      Person & email address to contact for further information:
      Russ Housley <>

      Intended usage: COMMON

      Author/Change controller:
      Russ Housley <>

Housley                                                         [Page 2]

INTERNET DRAFT                                               August 2009

3. Security Considerations

   Attribute certificate issuers must encode the holder entity name in
   exactly the same way as the public key certificate distinguished
   name.  If they are encoded differently, implementations may fail to
   recognize that the attribute certificate and public key certificate
   belong to the same entity.

4. References

4.1. Normative References

   [RFC3281] S. Farrell, S., and R. Housley, "An Internet Attribute
             Certificate Profile for Authorization", RFC 3281,
             April 2002.

4.2. Informative References

   [RFC2585] Housley, R., and P. Hoffman, " Internet X.509 Public Key
             Infrastructure Operational Protocols: FTP and HTTP",
             RFC 2585, May 1999.

Authors' Addresses

   Russell Housley
   Vigil Security, LLC
   918 Spring Knoll Drive
   Herndon, VA 20170

Housley                                                         [Page 3]