IETF Logo Mail Archive

Re: [openpgp] SHA-x performance

Hilarie Orman <hilarie@purplestreak.com> Wed, 12 August 2015 17:39 UTC

Return-Path: <hilarie@purplestreak.com>
X-Original-To: openpgp@ietfa.amsl.com
Delivered-To: openpgp@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A40C31A92EE for <openpgp@ietfa.amsl.com>; Wed, 12 Aug 2015 10:39:00 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.6
X-Spam-Level:
X-Spam-Status: No, score=-2.6 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7] autolearn=ham
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 i9vlzIvBZqla for <openpgp@ietfa.amsl.com>; Wed, 12 Aug 2015 10:38:59 -0700 (PDT)
Received: from out02.mta.xmission.com (out02.mta.xmission.com [166.70.13.232]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 4F01F1A92E5 for <openpgp@ietf.org>; Wed, 12 Aug 2015 10:38:59 -0700 (PDT)
Received: from mx02.mta.xmission.com ([166.70.13.212]) by out02.mta.xmission.com with esmtps (TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from <hilarie@purplestreak.com>) id 1ZPZzO-0000SJ-Bo; Wed, 12 Aug 2015 11:38:58 -0600
Received: from mta2.zcs.xmission.com ([166.70.13.66]) by mx02.mta.xmission.com with esmtps (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.82) (envelope-from <hilarie@purplestreak.com>) id 1ZPZzN-0006Dc-DK; Wed, 12 Aug 2015 11:38:57 -0600
Received: from localhost (localhost [127.0.0.1]) by mta2.zcs.xmission.com (Postfix) with ESMTP id 145486001C1; Wed, 12 Aug 2015 11:38:57 -0600 (MDT)
Received: from mta2.zcs.xmission.com ([127.0.0.1]) by localhost (mta2.zcs.xmission.com [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id p4fIJaID1Mhh; Wed, 12 Aug 2015 11:38:57 -0600 (MDT)
Received: from zms04.zcs.xmission.com (zms04.zcs.xmission.com [166.70.13.74]) by mta2.zcs.xmission.com (Postfix) with ESMTP id 00E676001BF; Wed, 12 Aug 2015 11:38:57 -0600 (MDT)
Date: Wed, 12 Aug 2015 11:38:56 -0600
From: Hilarie Orman <hilarie@purplestreak.com>
To: Bill Frantz <frantz@pwpconsult.com>
Message-ID: <1451253004.21291912.1439401136539.JavaMail.zimbra@purplestreak.com>
In-Reply-To: <r422Ps-1075i-213B7CE1B18E4816BEBD39A534C7B93D@Williams-MacBook-Pro.local>
References: <r422Ps-1075i-213B7CE1B18E4816BEBD39A534C7B93D@Williams-MacBook-Pro.local>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: quoted-printable
X-Originating-IP: [72.250.219.84]
X-Mailer: Zimbra 8.6.0_GA_1178 (zclient/8.6.0_GA_1178)
Thread-Topic: SHA-x performance
Thread-Index: GHYR+IFd01mvC5Ak40d2HMq8iV3LWQ==
X-SA-Exim-Connect-IP: 166.70.13.66
X-SA-Exim-Mail-From: hilarie@purplestreak.com
X-Spam-DCC: XMission; sa02 1397; Body=1 Fuz1=1 Fuz2=1
X-Spam-Combo: **;Bill Frantz <frantz@pwpconsult.com>
X-Spam-Relay-Country: XX
X-Spam-Timing: total 484 ms - load_scoreonly_sql: 0.06 (0.0%), signal_user_changed: 4.8 (1.0%), b_tie_ro: 3.7 (0.8%), parse: 1.43 (0.3%), extract_message_metadata: 41 (8.4%), get_uri_detail_list: 3.0 (0.6%), tests_pri_-1000: 13 (2.6%), tests_pri_-950: 1.57 (0.3%), tests_pri_-900: 1.64 (0.3%), tests_pri_-400: 40 (8.3%), check_bayes: 38 (7.9%), b_tokenize: 11 (2.2%), b_tok_get_all: 7 (1.5%), b_comp_prob: 4.1 (0.8%), b_tok_touch_all: 12 (2.5%), b_finish: 1.07 (0.2%), tests_pri_0: 352 (72.7%), tests_pri_500: 15 (3.0%), rewrite_mail: 0.00 (0.0%)
X-SA-Exim-Version: 4.2.1 (built Wed, 24 Sep 2014 11:24:12 -0600)
X-SA-Exim-Scanned: Yes (on mx02.mta.xmission.com)
Archived-At: <http://mailarchive.ietf.org/arch/msg/openpgp/PQHi7Bawn7wk7IIrTtczAU9ggiU>
Cc: openpgp@ietf.org, ianG <iang@iang.org>
Subject: Re: [openpgp] SHA-x performance
X-BeenThere: openpgp@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: "Ongoing discussion of OpenPGP issues." <openpgp.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/openpgp>, <mailto:openpgp-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/openpgp/>
List-Post: <mailto:openpgp@ietf.org>
List-Help: <mailto:openpgp-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/openpgp>, <mailto:openpgp-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 12 Aug 2015 17:39:00 -0000

For the very low end devices, things that run on a AA battery for
10 years unattended, there simply is not enough power to do
any kind of crypto.  It's a research problem for device physicists.

Hilarie

----- Original Message -----
From: Bill Frantz <frantz@pwpconsult.com>
To: ianG <iang@iang.org>
Cc: openpgp@ietf.org
Sent: Wed, 12 Aug 2015 11:12:12 -0600 (MDT)
Subject: Re: [openpgp] SHA-x performance

On 8/12/15 at 8:11 AM, iang@iang.org (ianG) wrote:

>Personally, I see a huge leap here.  OpenPGP isn't 
>suitable/designed at all for that application(s) / market(s).

I see some security needs in this market that, like most 
security needs, are being generally ignored.

(1) Authentication of messages

(2) Replay protection for messages

(3) Authentication of software updates

Can PGP perform these functions? Is it the best technical solution?

If the answer to both of these is yes, then we should consider 
these small systems.

Cheers - Bill

------------------------------------------------------------------------
Bill Frantz        |"Insofar as the propositions of mathematics 
refer to
408-356-8506       | reality, they are not certain; and insofar 
they are
www.pwpconsult.com | certain, they do not refer to reality.” 
-- Einstein

_______________________________________________
openpgp mailing list
openpgp@ietf.org
https://www.ietf.org/mailman/listinfo/openpgp

v2.23.0 | Report a Bug | By Email