Cryptographic Message Syntax (CMS) Symmetric Key Package Content Type
RFC 6031

Internet Engineering Task Force (IETF)                         S. Turner
Request for Comments: 6031                                          IECA
Category: Standards Track                                     R. Housley
ISSN: 2070-1721                                           Vigil Security
                                                           December 2010

 Cryptographic Message Syntax (CMS) Symmetric Key Package Content Type

Abstract

   This document defines the symmetric key format content type.  It is
   transport independent.  The Cryptographic Message Syntax (CMS) can be
   used to digitally sign, digest, authenticate, or encrypt this content
   type.

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/rfc6031.

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

Turner & Housley             Standards Track                    [Page 1]
RFC 6031         CMS Symmetric Key Package Content Type    December 2010

Table of Contents

   1. Introduction...................................................3
      1.1. Requirements Terminology..................................3
      1.2. ASN.1 Syntax Notation.....................................3
   2. Symmetric Key Package Content Type.............................3
   3. PSKC Attributes................................................4
      3.1. PSKC Key Package Attributes...............................5
         3.1.1. Device Information Attributes........................5
         3.1.2. Cryptographic Module Information Attributes..........8
      3.2. PSKC Key Attributes.......................................8
         3.2.1. Key Identifier.......................................8
         3.2.2. Algorithm............................................9
         3.2.3. Issuer...............................................9
         3.2.4. Key Profile Identifier...............................9
         3.2.5. Key Reference Identifier.............................9
         3.2.6. Friendly Name.......................................10
         3.2.7. Algorithm Parameters................................10
         3.2.8. Counter.............................................12
         3.2.9. Time................................................13
         3.2.10. Time Interval......................................13
         3.2.11. Time Drift.........................................13
         3.2.12. Value MAC..........................................13
         3.2.13. Key User Id........................................14
      3.3. Key Policy Attributes....................................14
         3.3.1. Key Start Date......................................14
         3.3.2. Key Expiry Date.....................................15
         3.3.3. Number of Transactions..............................15
         3.3.4. Key Usage...........................................15
         3.3.5. PIN Policy..........................................16
   4. Key Encoding..................................................18
      4.1. AES Key Encoding.........................................18
      4.2. Triple-DES Key Encoding..................................18
   5. Security Considerations.......................................19
   6. IANA Considerations...........................................19
   7. References....................................................19
      7.1. Normative References.....................................19
      7.2. Informative References...................................21
   Appendix A. ASN.1 Module.........................................22
      A.1. Symmetric Key Package ASN.1 Module.......................22
      A.2. PSKC ASN.1 Module........................................23