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New ASN.1 Modules for the Public Key Infrastructure Using X.509 (PKIX)
RFC 5912

Internet Engineering Task Force (IETF)                        P. Hoffman
Request for Comments: 5912                                VPN Consortium
Category: Informational                                        J. Schaad
ISSN: 2070-1721                                  Soaring Hawk Consulting
                                                               June 2010

 New ASN.1 Modules for the Public Key Infrastructure Using X.509 (PKIX)

Abstract

   The Public Key Infrastructure using X.509 (PKIX) certificate format,
   and many associated formats, are expressed using ASN.1.  The current
   ASN.1 modules conform to the 1988 version of ASN.1.  This document
   updates those ASN.1 modules to conform to the 2002 version of ASN.1.
   There are no bits-on-the-wire changes to any of the formats; this is
   simply a change to the syntax.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   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).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see 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/rfc5912.

Hoffman & Schaad              Informational                     [Page 1]
RFC 5912                   New ASN.1 for PKIX                  June 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
   (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.

   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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Design Notes  . . . . . . . . . . . . . . . . . . . . . .   4
   2.  ASN.1 Module PKIX-CommonTypes . . . . . . . . . . . . . . . .   5
   3.  ASN.1 Module AlgorithmInformation . . . . . . . . . . . . . .   8
   4.  ASN.1 Module for RFC 2560 . . . . . . . . . . . . . . . . . .  18
   5.  ASN.1 Module for RFC 2986 . . . . . . . . . . . . . . . . . .  22
   6.  ASN.1 Module for RFC 3279 . . . . . . . . . . . . . . . . . .  23
   7.  ASN.1 Module for RFC 3852 (Attribute Certificate v1)  . . . .  34
   8.  ASN.1 Module for RFC 4055 . . . . . . . . . . . . . . . . . .  36
   9.  ASN.1 Module for RFC 4210 . . . . . . . . . . . . . . . . . .  42
   10. ASN.1 Module for RFC 4211 . . . . . . . . . . . . . . . . . .  53
   11. ASN.1 Module for RFC 5055 . . . . . . . . . . . . . . . . . .  61
   12. ASN.1 Module for RFC 5272 . . . . . . . . . . . . . . . . . .  74
   13. ASN.1 Module for RFC 5755 . . . . . . . . . . . . . . . . . .  85
   14. ASN.1 Module for RFC 5280, Explicit and Implicit  . . . . . .  91
   15. Security Considerations . . . . . . . . . . . . . . . . . . . 115
   16. Normative References  . . . . . . . . . . . . . . . . . . . . 116

Hoffman & Schaad              Informational                     [Page 2]
RFC 5912                   New ASN.1 for PKIX                  June 2010

1.  Introduction

   Some developers would like the IETF to use the latest version of
   ASN.1 in its standards.  Most of the RFCs that relate to security
   protocols still use ASN.1 from the 1988 standard, which has been
   deprecated.  This is particularly true for the standards that relate

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