One document matched: draft-turner-akf-algs-update-00.txt

Network Working Group                                 Sean Turner, IECA 
Internet Draft                                          August 11, 2010 
Updates: I-D.turner-asymmetrickeyformat-algs (once approved) 
Intended Status: Standards Track 
Expires: February 11, 2011 
 
                                      
     Elliptic Curve Algorithms for Asymmetric Key Package Content Type 
                  draft-turner-akf-algs-update-00.txt 


Abstract 

   This document describes conventions for using Elliptic Curve 
   cryptographic algorithms with SignedData and EnvelopedData to protect 
   the AsymmetricKeyPackage content type.  It updates 
   I-D.turner-asymmetrickeyformat-algs. 

Status of this Memo 

   This Internet-Draft is submitted to IETF in full conformance with the 
   provisions of BCP 78 and BCP 79.  This document may contain material 
   from IETF Documents or IETF Contributions published or made publicly 
   available before November 10, 2008. 

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   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. 

 
 
 
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   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 
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   described in the Simplified BSD License. 

1. Introduction 

   [I-D.turner-asymmetrickeyformat-algs] describes conventions necessary 
   to protect the AsymmetricKeyPackage content type [I-D.turner-
   asymmetrickeyformat] with Cryptographic Message Syntax (CMS) 
   protecting content types: SignedData [RFC5652], EnvelopedData 
   [RFC5652], EncryptedData [RFC5652], AuthenticatedData [RFC5652], and 
   AuthEnvelopedData [RFC5083].  This document extends the algorithms 
   used with SignedData and EnvelopedData to include Elliptic Curve 
   Digital Signature Algorithm (ECDSA) and Elliptic Curve Diffie-Hellman 
   (ECDH).  Familiarity with [I-D.turner-asymmetrickeyformat-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. AsymmetricKeyPackage 

   As noted in Asymmetric Key Packages [I-D.turner-asymmetrickeyformat], 
   CMS can be used to protect the AsymmetricKeyPackage.  The following 
   provides guidance for SignedData [RFC5652] and EnvelopedData 
   [RFC5652] when used with Elliptic Curve algorithms. 

2.1. SignedData 

   If an implementation supports SignedData, then it MAY support ECDSA  
   [I-D.mcgrew-fundamental-ecc]. 



 
 
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2.2. EnvelopedData 

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

3. 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. 

4. Security Considerations 

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

5. IANA Considerations 

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

6. References 

6.1. 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. 
 
 
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   [I-D.turner-asymmetrickeyformat] Turners, S., "Asymmetric Key 
               Packages", draft-turner-asymmetrickeyformat-05.txt, work-
               in-progress. 

   [I-D.turner-asymmetrickeyformat-algs]  Turners, S., "Asymmetric Key 
               Packages", draft-turner-asymmetrickeyformat-algs-01.txt, 
               work-in-progress. 

6.2. Informative References 

   None. 

Authors' Addresses 

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

   EMail: turners@ieca.com 


























 
 
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