[Docs] [txt|pdf] [Tracker] [Email] [Nits] [IPR]

Versions: 00 01 02 03 RFC 6161

Network Working Group                                 Sean Turner, IECA
Internet Draft                                          August 11, 2010
Updates: I-D.turner-encryptedkeypackagecontenttype-algs (once approved)
Intended Status: Standard Track
Expires: February 11, 2010


     Elliptic Curve Algorithms for Cryptographic Message Syntax (CMS)
                    Encrypted Key Package Content Type
                   draft-turner-ekpct-algs-update-00.txt


Abstract

   This document describes the conventions for using several Elliptic
   Curve cryptographic algorithms with the Cryptographic Message Syntax
   (CMS) encrypted key package content type. Specifically, it includes
   conventions necessary to implement ECDH with EnvelopedData and ECDSA
   with SignedData.

Status of this Memo

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

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
   other groups may also distribute working documents as Internet-
   Drafts.

   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."

   The list of current Internet-Drafts can be accessed at
   http://www.ietf.org/ietf/1id-abstracts.txt

   The list of Internet-Draft Shadow Directories can be accessed at
   http://www.ietf.org/shadow.html

   This Internet-Draft will expire on February 11, 2010.

Copyright Notice

   Copyright (c) 2010 IETF Trust and the persons identified as the
   document authors. All rights reserved.




Turner                Expires February 11, 2011                [Page 1]

Internet-Draft EC Algorithms for CMS Encrypted Key Packages August 2009


   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.

1. Introduction

   This document describes the conventions for using Elliptic Curve
   cryptographic algorithms with the Cryptographic Message Syntax (CMS)
   encrypted key package content type
   [I-D.turner-encryptedkeypackagecontenttype].  Specifically, it
   includes conventions necessary to implement the following CMS content
   types: EnvelopedData [RFC5652] and SignedData [RFC5652].  This
   document updates [I-D.turner-encryptedkeypackagecontenttype-algs].
   Familiarity with [I-D.turner-encryptedkeypackagecontenttype-algs] and
   [RFC5753] is assumed.

   This document does not define any new algorithms; instead it refers
   to previously defined algorithms.

1.1. Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in
   [RFC2119].

2. EnvelopedData

   When key agreement is used, ECDH [I-D.mcgrew-fundamental-ecc] MAY be
   supported.

3. SignedData

   If an implementation encapsulates an EncryptedKeyPacakge with a
   SignedData [RFC5652], then it MAY support the signature scheme ECDSA
   [I-D.mcgrew-fundamental-ecc].







Turner                Expires February 11, 2011                [Page 2]

Internet-Draft EC Algorithms for CMS Encrypted Key Packages August 2009


4. Public Key Sizes

   The easiest way to implement the SignedData and EnvelopedData is with
   public key certificates [RFC5280][RFC5480]. If an implementation
   supports ECDSA or ECDH, then it MUST support keys on P-256.

5. Security Considerations

   The security considerations from [RFC5280], [RFC5480], [RFC5652],
   [RFC5753], [I-D.turner-encryptedkeypackagecontenttype-algs], and
   [I-D.mcgrew-fundamental-ecc] apply.

6. IANA Considerations

   None.  Please remove this section prior to publication as an RFC.

7. References

7.1. Normative References

   [RFC2119]   Bradner, S., "Key words for use in RFCs to Indicate
               Requirement Levels", BCP 14, RFC 2119, March 1997.

   [RFC5280]   Cooper, D., Santesson, S., Farrell, S., Boeyen, S.,
               Housley, R., and W. Polk, "Internet X.509 Public Key
               Infrastructure Certificate and Certificate Revocation
               List (CRL) Profile", RFC 5280, May 2008.

   [RFC5480]   Turner, S., Brown, D., Yiu, K., Housley, R., and T. Polk,
               "Elliptic Curve Cryptography Subject Public Key
               Information", RFC 5480, March 2009.

   [RFC5652]   Housley, R., "Cryptographic Message Syntax (CMS)", RFC
               5652, September 2009.

   [RFC5753]   Turner, S., and D. Brown, "Use of Elliptic Curve
               Cryptography (ECC) Algorithms in Cryptographic Message
               Syntax (CMS)", RFC 5753, January 2010.

   [I-D.mcgrew-fundamental-ecc] McGrew, D., Igoe, E., and M. Salter,
               "Fundamental Elliptic Curve Cryptography Algorithms",
               draft-mcgrew-fundamental-ecc-03.txt, work-in-progress.

   [I-D.turner-encryptedkeypackagecontenttype] Turner, S., and R.
               Housley, "Cryptographic Message Syntax (CMS) Encrypted
               Key Package Content Type", draft-turner-
               encryptedkeypackagecontenttype-02.txt, work-in-progress.


Turner                Expires February 11, 2011                [Page 3]

Internet-Draft EC Algorithms for CMS Encrypted Key Packages August 2009


   [I-D.turner-encryptedkeypackagecontenttype-algs] Turner, S.,
               "Algorithms for Cryptographic Message Syntax (CMS)
               Encrypted Key Package Content Type", draft-turner-
               encryptedkeypackagecontenttype-algs-02.txt, work-in-
               progress.

7.2. Informative References

   None.

Authors' Addresses

   Sean Turner
   IECA, Inc.
   3057 Nutley Street, Suite 106
   Fairfax, VA 22031
   USA

   EMail: turners@ieca.com






























Turner                Expires February 11, 2011                [Page 4]

Html markup produced by rfcmarkup 1.108, available from http://tools.ietf.org/tools/rfcmarkup/