IETF Logo Mail Archive

[Cfrg] A new MGF for RSA-PSS based on SHAKE

Russ Housley <housley@vigilsec.com> Mon, 17 September 2018 20:57 UTC

Return-Path: <housley@vigilsec.com>
X-Original-To: cfrg@ietfa.amsl.com
Delivered-To: cfrg@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 9364F130DD3 for <cfrg@ietfa.amsl.com>; Mon, 17 Sep 2018 13:57:14 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.9
X-Spam-Level:
X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id MA94Wz5tqm6B for <cfrg@ietfa.amsl.com>; Mon, 17 Sep 2018 13:57:13 -0700 (PDT)
Received: from mail.smeinc.net (mail.smeinc.net [209.135.209.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 424FD130DCE for <cfrg@irtf.org>; Mon, 17 Sep 2018 13:57:13 -0700 (PDT)
Received: from localhost (localhost [127.0.0.1]) by mail.smeinc.net (Postfix) with ESMTP id E0FFA300A02 for <cfrg@irtf.org>; Mon, 17 Sep 2018 16:57:10 -0400 (EDT)
X-Virus-Scanned: amavisd-new at mail.smeinc.net
Received: from mail.smeinc.net ([127.0.0.1]) by localhost (mail.smeinc.net [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id HOBo3FK9cxFS for <cfrg@irtf.org>; Mon, 17 Sep 2018 16:57:09 -0400 (EDT)
Received: from new-host-5.home (pool-71-127-50-4.washdc.fios.verizon.net [71.127.50.4]) by mail.smeinc.net (Postfix) with ESMTPSA id DB2B9300258 for <cfrg@irtf.org>; Mon, 17 Sep 2018 16:57:09 -0400 (EDT)
From: Russ Housley <housley@vigilsec.com>
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.1\))
Message-Id: <3B4BE320-418B-4FC1-8427-0EF2F58A0F01@vigilsec.com>
Date: Mon, 17 Sep 2018 16:57:10 -0400
To: IRTF CFRG <cfrg@irtf.org>
X-Mailer: Apple Mail (2.3445.9.1)
Archived-At: <https://mailarchive.ietf.org/arch/msg/cfrg/VVm9BQZSOHpaFR4ZQMQPUFtgjOk>
Subject: [Cfrg] A new MGF for RSA-PSS based on SHAKE
X-BeenThere: cfrg@irtf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Crypto Forum Research Group <cfrg.irtf.org>
List-Unsubscribe: <https://www.irtf.org/mailman/options/cfrg>, <mailto:cfrg-request@irtf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/cfrg/>
List-Post: <mailto:cfrg@irtf.org>
List-Help: <mailto:cfrg-request@irtf.org?subject=help>
List-Subscribe: <https://www.irtf.org/mailman/listinfo/cfrg>, <mailto:cfrg-request@irtf.org?subject=subscribe>
X-List-Received-Date: Mon, 17 Sep 2018 20:57:15 -0000

Dear CFRG:

The IETF LAMPS WG is specifying the use of SHAKE with RSA-PSS for use with certificates and CMS signed objects.  The current drafts are:

	draft-ietf-lamps-cms-shakes-01.txt
	draft-ietf-lamps-pkix-shake-02.txt

In discussion of these drafts, it was suggested that instead of replacing SHA-1 in the RSA-PSS default mask generation function (MGF), one could replace the entire MGF with SHAKE.  While it does look like a simple substitution, I do not think the IETF LAMPS WG is the right group to make the assessment.  CFRG may have people with the right skills, so I would greatly appreciate you thoughts on this idea.

Russ

v2.23.0 | Report a Bug | By Email