One document matched: draft-turner-akf-algs-update-01.txt

Differences from draft-turner-akf-algs-update-00.txt

Network Working Group                                         S. Turner 
Internet Draft                                                     IECA
Updates: 5959 (once approved)                        September 16, 2010
Intended Status: Standards Track 
Expires: March 16, 2011 
 
                                      
     Elliptic Curve Algorithms for Asymmetric Key Package Content Type 
                    draft-turner-akf-algs-update-01.txt 


Abstract 

   This document describes conventions for using Elliptic Curve 
   cryptographic algorithms with SignedData and EnvelopedData to protect 
   the AsymmetricKeyPackage content type.  Specifically, it includes 
   conventions necessary to implement Elliptic Curve Diffie-Hellman 
   (ECDH) with EnvelopedData and Elliptic Curve Digital Signature 
   Algorithm (ECDSA) with SignedData.  It updates 
   RFC 5959. 

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. 

   Internet-Drafts are working documents of the Internet Engineering 
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   This Internet-Draft will expire on March 16, 2010. 



 
 
 
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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. 

1. Introduction 

   [RFC5959] describes conventions necessary to protect the 
   AsymmetricKeyPackage content type [RFC5958] 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), respectively.  Familiarity with [RFC5959] 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 [RFC5958], CMS can be used to 
   protect the AsymmetricKeyPackage.  The following provides guidance 
   for SignedData [RFC5652] and EnvelopedData [RFC5652] when used with 
   Elliptic Curve algorithms. 




 
 
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2.1. SignedData 

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

2.2. EnvelopedData 

   When key agreement is used, standard (as opposed to co-factor) 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 the P-256 curve. 

4. Security Considerations 

   The security considerations from [RFC5280], [RFC5480], [RFC5652], 
   [RFC5753], [RFC5959], 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. 
 
 
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   [RFC5958]   Turners, S., "Asymmetric Key Packages", RFC 5958, August 
               2010. 

   [RFC5959]   Turners, S., "Asymmetric Key Packages", RFC 5959, August 
               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. 

6.2. Informative References 

   [RFC5083]   Housley, R., "Cryptographic Message Syntax (CMS) 
               Authenticated-Enveloped-Data Content Type", RFC 5083, 
               November 2007. 

Authors' Addresses 

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

   EMail: turners@ieca.com 






















 
 
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