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Re: [Curdle] I-D Action: draft-ietf-curdle-cms-eddsa-signatures-05.txt

Jim Schaad <ietf@augustcellars.com> Tue, 11 April 2017 22:08 UTC

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From: Jim Schaad <ietf@augustcellars.com>
To: 'Russ Housley' <housley@vigilsec.com>, 'curdle' <curdle@ietf.org>
References: <149194658605.15649.2604886928756796432@ietfa.amsl.com> <1FCC8833-BC65-4B48-BC07-B5E0256E3519@vigilsec.com>
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Date: Tue, 11 Apr 2017 14:58:04 -0700
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Subject: Re: [Curdle] I-D Action: draft-ietf-curdle-cms-eddsa-signatures-05.txt
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I agree that this addressed the issued that I raised.

-----Original Message-----
From: Curdle [mailto:curdle-bounces@ietf.org] On Behalf Of Russ Housley
Sent: Tuesday, April 11, 2017 2:40 PM
To: curdle <curdle@ietf.org>
Subject: Re: [Curdle] I-D Action:
draft-ietf-curdle-cms-eddsa-signatures-05.txt

I believe that this resolves the issues that were raised by Jim Schaad
yesterday.

When Ed448 is used, the SHAKE256 output remains a 512 bits based on the
information provided by Ilari Liusvaara.

Russ


> On Apr 11, 2017, at 5:36 PM, internet-drafts@ietf.org wrote:
> 
> 
> A New Internet-Draft is available from the on-line Internet-Drafts
directories.
> This draft is a work item of the CURves, Deprecating and a Little more
Encryption of the IETF.
> 
>        Title           : Use of EdDSA Signatures in the Cryptographic
Message Syntax (CMS)
>        Author          : Russ Housley
> 	Filename        : draft-ietf-curdle-cms-eddsa-signatures-05.txt
> 	Pages           : 8
> 	Date            : 2017-04-11
> 
> Abstract:
>   This document specifies the conventions for using Edwards-curve
>   Digital Signature Algorithm (EdDSA) for Curve25519 and Curve448 in
>   the Cryptographic Message Syntax (CMS).  For each curve, EdDSA
>   defines the PureEdDSA and HashEdDSA modes.  However, the HashEdDSA
>   mode is not used with the CMS.  In addition, no context string is
>   used with the CMS.
> 
> 
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-curdle-cms-eddsa-signature
> s/
> 
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-ietf-curdle-cms-eddsa-signatures-05
> https://datatracker.ietf.org/doc/html/draft-ietf-curdle-cms-eddsa-sign
> atures-05
> 
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=draft-ietf-curdle-cms-eddsa-signatur
> es-05
> 
> 
> Please note that it may take a couple of minutes from the time of 
> submission until the htmlized version and diff are available at
tools.ietf.org.
> 
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
> 

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