Elliptic Curve Cryptography (ECC) in OpenPGP
RFC 6637
Document | Type |
RFC - Proposed Standard
(June 2012; No errata)
Was draft-jivsov-openpgp-ecc (individual)
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|
---|---|---|---|
Author | Andrey Jivsov | ||
Last updated | 2015-10-14 | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 6637 (Proposed Standard) | |
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Sean Turner | ||
IESG note | Wener Koch (wk@gnupg.org) is the Document Shepherd. | ||
Send notices to | wk@gnupg.org |
Internet Engineering Task Force (IETF) A. Jivsov Request for Comments: 6637 Symantec Corporation Category: Standards Track June 2012 ISSN: 2070-1721 Elliptic Curve Cryptography (ECC) in OpenPGP Abstract This document defines an Elliptic Curve Cryptography extension to the OpenPGP public key format and specifies three Elliptic Curves that enjoy broad support by other standards, including standards published by the US National Institute of Standards and Technology. The document specifies the conventions for interoperability between compliant OpenPGP implementations that make use of this extension and these Elliptic Curves. 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/rfc6637. Copyright Notice Copyright (c) 2012 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. Jivsov Standards Track [Page 1] RFC 6637 ECC in OpenPGP June 2012 Table of Contents 1. Introduction ....................................................3 2. Conventions used in This Document ...............................3 3. Elliptic Curve Cryptography .....................................3 4. Supported ECC Curves ............................................3 5. Supported Public Key Algorithms .................................4 6. Conversion Primitives ...........................................4 7. Key Derivation Function .........................................5 8. EC DH Algorithm (ECDH) ..........................................5 9. Encoding of Public and Private Keys .............................8 10. Message Encoding with Public Keys ..............................9 11. ECC Curve OID .................................................10 12. Compatibility Profiles ........................................10 12.1. OpenPGP ECC Profile ......................................10 12.2. Suite-B Profile ..........................................11 12.2.1. Security Strength at 192 Bits .....................11 12.2.2. Security Strength at 128 Bits .....................11 13. Security Considerations .......................................12 14. IANA Considerations ...........................................14 15. References ....................................................14 15.1. Normative References .....................................14 15.2. Informative References ...................................15 16. Contributors ..................................................15 17. Acknowledgment ................................................15 Jivsov Standards Track [Page 2] RFC 6637 ECC in OpenPGP June 2012 1. Introduction The OpenPGP protocol [RFC4880] supports RSA and DSA (Digital Signature Algorithm) 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]. Any implementation that adheres to the format and methods specified in this document is called a compliant application. Compliant applications are a subset of the broader set of OpenPGP applications described in [RFC4880]. Any [RFC2119] keyword within this document applies to compliant applications only. 3. Elliptic Curve Cryptography This document establishes the minimum set of Elliptic Curve Cryptography (ECC) public key parameters and cryptographic methodsShow full document text