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Edwards-Curve Digital Signature Algorithm (EdDSA) (RFC8032)

IP.com Disclosure Number: IPCOM000248976D
Original Publication Date: 2017-Jan-01
Included in the Prior Art Database: 2017-Jan-25

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

S. Josefsson: AUTHOR [+2]

Abstract

The Edwards-curve Digital Signature Algorithm (EdDSA) is a variant of Schnorr's signature system with (possibly twisted) Edwards curves. EdDSA needs to be instantiated with certain parameters, and this document describes some recommended variants.

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Internet Research Task Force (IRTF)                         S. Josefsson Request for Comments: 8032                                        SJD AB Category: Informational                                     I. Liusvaara ISSN: 2070-1721                                              Independent                                                             January 2017

            Edwards-Curve Digital Signature Algorithm (EdDSA)

Abstract

   This document describes elliptic curve signature scheme Edwards-curve    Digital Signature Algorithm (EdDSA).  The algorithm is instantiated    with recommended parameters for the edwards25519 and edwards448    curves.  An example implementation and test vectors are provided.

Status of This Memo

   This document is not an Internet Standards Track specification; it is    published for informational purposes.

   This document is a product of the Internet Research Task Force    (IRTF).  The IRTF publishes the results of Internet-related research    and development activities.  These results might not be suitable for    deployment.  This RFC represents the consensus of the Crypto Forum    Research Group of the Internet Research Task Force (IRTF).  Documents    approved for publication by the IRSG are not a candidate for any    level of Internet Standard; see Section 2 of RFC 7841.

   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/rfc8032.

Copyright Notice

   Copyright (c) 2017 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.

Josefsson & Liusvaara         Informational                     [Page 1]
 RFC 8032                EdDSA: Ed25519 and Ed448            January 2017

 Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3

   2.  Notation and Conventions  . . . . . . . . . . . . . . . . . .   4

   3.  EdDSA Algorithm . . . . . . . . . . . . . . . . . . . . . . .   5

     3.1.  Encoding  . . . . . . . . . . . . . . . . . . . . . . . .   7

     3.2.  Keys  . . . . . . . . . . . . . . . . . . . . . . . . . .   7

     3.3.  Sign  . . . . . . . . . . . . . . . . . . . . . . . . . .   8

     3.4.  Verify  . . . . . . . . . . . . ....