draft-ietf-curdle-ssh-ed25519-ed448-10.txt   draft-ietf-curdle-ssh-ed25519-ed448-11.txt 
Internet Engineering Task Force B. Harris Internet Engineering Task Force B. Harris
Internet-Draft Internet-Draft
Updates: RFC4253 (if approved) L. Velvindron Updates: RFC4253 (if approved) L. Velvindron
Intended status: Standards Track cyberstorm.mu Intended status: Standards Track cyberstorm.mu
Expires: March 5, 2020 September 2, 2019 Expires: March 12, 2020 September 9, 2019
Ed25519 and Ed448 public key algorithms for the Secure Shell (SSH) Ed25519 and Ed448 public key algorithms for the Secure Shell (SSH)
protocol protocol
draft-ietf-curdle-ssh-ed25519-ed448-10 draft-ietf-curdle-ssh-ed25519-ed448-11
Abstract Abstract
This document describes the use of the Ed25519 and Ed448 digital This document describes the use of the Ed25519 and Ed448 digital
signature algorithm in the Secure Shell (SSH) protocol. signature algorithm in the Secure Shell (SSH) protocol.
Status of This Memo Status of This Memo
This Internet-Draft is submitted in full conformance with the This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79. provisions of BCP 78 and BCP 79.
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/. Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on March 5, 2020. This Internet-Draft will expire on March 12, 2020.
Copyright Notice Copyright Notice
Copyright (c) 2019 IETF Trust and the persons identified as the Copyright (c) 2019 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of (https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
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the generation of SSHFP resource records for "ssh-ed448" keys and the the generation of SSHFP resource records for "ssh-ed448" keys and the
document specifies the corresponding Ed448 code point to the "SSHFP document specifies the corresponding Ed448 code point to the "SSHFP
RR Types for public key algorithms" IANA registry. RR Types for public key algorithms" IANA registry.
The generation of SSHFP resource records for "ssh-ed25519" keys is The generation of SSHFP resource records for "ssh-ed25519" keys is
described in [RFC7479]. described in [RFC7479].
The generation of SSHFP resource records for "ssh-ed448" keys is The generation of SSHFP resource records for "ssh-ed448" keys is
described as follows. described as follows.
The encoding of ed448 public keys is described in [ED448]. In brief, The encoding of Ed448 public keys is described in [ED448]. In brief,
an ed448 public key is a 57-octet value representing a 455-bit an Ed448 public key is a 57-octet value representing a 455-bit
y-coordinate of an elliptic curve point, and a sign bit indicating y-coordinate of an elliptic curve point, and a sign bit indicating
the the corresponding x-coordinate. the the corresponding x-coordinate.
The SSHFP Resource Record for the Ed448 public key with SHA-256 The SSHFP Resource Record for the Ed448 public key with SHA-256
fingerprint would for example be: fingerprint would for example be:
example.com. IN SSHFP TBD 2 ( a87f1b687ac0e57d2a081a2f2826723 example.com. IN SSHFP TBD 2 ( a87f1b687ac0e57d2a081a2f2826723
34d90ed316d2b818ca9580ea384d924 01 ) 34d90ed316d2b818ca9580ea384d924 01 )
The 2 here indicates SHA-256 [RFC6594]. The 2 here indicates SHA-256 [RFC6594].
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