ECC in OpenPGP
draft-jivsov-openpgp-ecc-09

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Document Type Active Internet-Draft (individual)
Last updated 2012-03-06 (latest revision 2012-02-17)
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Send notices to Andrey_Jivsov@symantec.com, wk@gnupg.org, draft-jivsov-openpgp-ecc@tools.ietf.org
Network Working Group                                        A. Jivsov
Internet Draft                                    Symantec Corporation
Intended status: Standards                           February 17, 2012
Expires: August 15, 2012

                               ECC in OpenPGP
                      draft-jivsov-openpgp-ecc-09.txt

Abstract

   This document proposes an Elliptic Curve Cryptography extension to
   the OpenPGP public key format and specifies three Elliptic Curves
   that enjoy broad support by other standards, including NIST
   standards.  The document aims to standardize an optimal but narrow
   set of parameters for best interoperability and it does so within
   the framework it defines that can be expanded in the future to
   allow more choices.

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
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   This Internet-Draft will expire on August 15, 2012.

Copyright Notice

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   Copyright (c) 2011 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.

Table of Contents
   1. Introduction.................................................2
   2. Conventions used in this document............................2
   3. Elliptic Curve Cryptography..................................3
   4. Supported ECC curves.........................................3
   5. Supported public key algorithms..............................3
   6. Conversion primitives........................................4
   7. Key Derivation Function......................................4
   8. EC DH Algorithm (ECDH).......................................5
   9. Encoding of public and private keys..........................7
   10. Data encoding with public keys..............................8
   11. ECC curve OID...............................................9
   12. Compatibility profiles......................................9
      12.1. OpenPGP ECC profile....................................9
      12.2. Suite-B profile.......................................10
         12.2.1. Secret information...............................10
         12.2.2. Top Secret information...........................10
   13. Security Considerations....................................10
   14. IANA Considerations........................................12
   15. Normative references.......................................12

1. Introduction

   The OpenPGP protocol supports RSA and DSA public key formats.  This
   document defines the extension to incorporate support for public
   keys that are based on Elliptic Curve Cryptography (ECC).

2. Conventions used in this document

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

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   An application MAY implement this draft; note that any [RFC2119]
   keyword within this draft applies to an OpenPGP application only if
   it chooses to implement this draft.

3. Elliptic Curve Cryptography

   This specification establishes the minimum set of Elliptic Curve
   Cryptography (ECC) public key parameters and cryptographic methods
   that will likely satisfy the widest range of platforms and
   applications and facilitate interoperability.  It adds a more
   efficient method for applications to balance the overall level of
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