IETF Logo Mail Archive

NIST publishes new DSA draft

David Shaw <dshaw@jabberwocky.com> Tue, 14 March 2006 16:27 UTC

Received: from [10.91.34.44] (helo=ietf-mx.ietf.org) by megatron.ietf.org with esmtp (Exim 4.43) id 1FJCMx-0006Vo-GU for openpgp-archive@lists.ietf.org; Tue, 14 Mar 2006 11:27:35 -0500
Received: from balder-227.proper.com ([192.245.12.227]) by ietf-mx.ietf.org with esmtp (Exim 4.43) id 1FJCMw-0006Sv-4b for openpgp-archive@lists.ietf.org; Tue, 14 Mar 2006 11:27:35 -0500
Received: from balder-227.proper.com (localhost [127.0.0.1]) by balder-227.proper.com (8.13.5/8.13.5) with ESMTP id k2EFwv9U097067; Tue, 14 Mar 2006 08:58:57 -0700 (MST) (envelope-from owner-ietf-openpgp@mail.imc.org)
Received: (from majordom@localhost) by balder-227.proper.com (8.13.5/8.13.5/Submit) id k2EFwvUd097066; Tue, 14 Mar 2006 08:58:57 -0700 (MST) (envelope-from owner-ietf-openpgp@mail.imc.org)
X-Authentication-Warning: balder-227.proper.com: majordom set sender to owner-ietf-openpgp@mail.imc.org using -f
Received: from foobar.cs.jhu.edu (foobar.cs.jhu.edu [128.220.13.173]) by balder-227.proper.com (8.13.5/8.13.5) with ESMTP id k2EFwu6p097058 for <ietf-openpgp@imc.org>; Tue, 14 Mar 2006 08:58:57 -0700 (MST) (envelope-from dshaw@jabberwocky.com)
Received: from walrus.hsd1.ma.comcast.net (walrus.hsd1.ma.comcast.net [24.60.132.70]) by foobar.cs.jhu.edu (8.11.6/8.11.6) with ESMTP id k2EFwjk04292 for <ietf-openpgp@imc.org>; Tue, 14 Mar 2006 10:58:45 -0500
Received: from grover.jabberwocky.com (grover.jabberwocky.com [172.24.84.28]) by walrus.hsd1.ma.comcast.net (8.12.8/8.12.8) with ESMTP id k2EFwf6c030341 for <ietf-openpgp@imc.org>; Tue, 14 Mar 2006 10:58:41 -0500
Received: from grover.jabberwocky.com (grover.jabberwocky.com [127.0.0.1]) by grover.jabberwocky.com (8.13.1/8.13.1) with ESMTP id k2EFwdmM001159 for <ietf-openpgp@imc.org>; Tue, 14 Mar 2006 10:58:39 -0500
Received: (from dshaw@localhost) by grover.jabberwocky.com (8.13.1/8.13.1/Submit) id k2EFwdmJ001158 for ietf-openpgp@imc.org; Tue, 14 Mar 2006 10:58:39 -0500
Date: Tue, 14 Mar 2006 10:58:39 -0500
From: David Shaw <dshaw@jabberwocky.com>
To: ietf-openpgp@imc.org
Subject: NIST publishes new DSA draft
Message-ID: <20060314155839.GA1029@jabberwocky.com>
Mail-Followup-To: ietf-openpgp@imc.org
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Disposition: inline
OpenPGP: id=99242560; url=http://www.jabberwocky.com/david/keys.asc
User-Agent: Mutt/1.5.11
Sender: owner-ietf-openpgp@mail.imc.org
Precedence: bulk
List-Archive: <http://www.imc.org/ietf-openpgp/mail-archive/>
List-Unsubscribe: <mailto:ietf-openpgp-request@imc.org?body=unsubscribe>
List-ID: <ietf-openpgp.imc.org>
X-Spam-Score: 0.0 (/)
X-Scan-Signature: cf4fa59384e76e63313391b70cd0dd25

In the OpenPGP context, probably the most interesting bit is that the
160-bit hash limit has been removed.  The sizes supported are:

* 1024-bit key, 160-bit hash (the current DSA)
* 2048-bit key, 224-bit hash (presumably aimed at SHA-224)
* 2048-bit key, 256-bit hash (presumably aimed at SHA-256)
* 3072-bit key, 256-bit hash (presumably aimed at SHA-256)

It also adds the concept of using a larger hash than will fit by
taking the leftmost bits.

http://csrc.nist.gov/publications/drafts.html

David

v2.23.0 | Report a Bug | By Email