Re: The TCP and UDP checksum algorithm may soon need updating

Nico Williams <nico@cryptonector.com> Fri, 05 June 2020 18:18 UTC

Return-Path: <nico@cryptonector.com>
X-Original-To: ietf@ietfa.amsl.com
Delivered-To: ietf@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 585933A0D93 for <ietf@ietfa.amsl.com>; Fri, 5 Jun 2020 11:18:32 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.1
X-Spam-Level:
X-Spam-Status: No, score=-2.1 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cryptonector.com
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 XeTqlj62nPQt for <ietf@ietfa.amsl.com>; Fri, 5 Jun 2020 11:18:31 -0700 (PDT)
Received: from buffalo.birch.relay.mailchannels.net (buffalo.birch.relay.mailchannels.net [23.83.209.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 04B473A0D92 for <ietf@ietf.org>; Fri, 5 Jun 2020 11:18:30 -0700 (PDT)
X-Sender-Id: dreamhost|x-authsender|nico@cryptonector.com
Received: from relay.mailchannels.net (localhost [127.0.0.1]) by relay.mailchannels.net (Postfix) with ESMTP id 368FE920475; Fri, 5 Jun 2020 18:18:30 +0000 (UTC)
Received: from pdx1-sub0-mail-a57.g.dreamhost.com (100-96-2-93.trex.outbound.svc.cluster.local [100.96.2.93]) (Authenticated sender: dreamhost) by relay.mailchannels.net (Postfix) with ESMTPA id AC86192144A; Fri, 5 Jun 2020 18:18:29 +0000 (UTC)
X-Sender-Id: dreamhost|x-authsender|nico@cryptonector.com
Received: from pdx1-sub0-mail-a57.g.dreamhost.com (pop.dreamhost.com [64.90.62.162]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384) by 0.0.0.0:2500 (trex/5.18.8); Fri, 05 Jun 2020 18:18:30 +0000
X-MC-Relay: Neutral
X-MailChannels-SenderId: dreamhost|x-authsender|nico@cryptonector.com
X-MailChannels-Auth-Id: dreamhost
X-Cure-Shoe: 746afd4106b93980_1591381109967_1681086402
X-MC-Loop-Signature: 1591381109967:1214776187
X-MC-Ingress-Time: 1591381109967
Received: from pdx1-sub0-mail-a57.g.dreamhost.com (localhost [127.0.0.1]) by pdx1-sub0-mail-a57.g.dreamhost.com (Postfix) with ESMTP id 6F09C7F15B; Fri, 5 Jun 2020 11:18:29 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=cryptonector.com; h=date :from:to:cc:subject:message-id:references:mime-version :content-type:in-reply-to; s=cryptonector.com; bh=Xl3ohHpr4KQcIi cHLbSJH+RcTF0=; b=anYTL+07apIClbZ36kupcKVNZl/jk1fJxjzCzC/ZlYgiRl DywcvkFyIILX1X8lhmiu9lCdcuU70ZpoBbF44bh/gt+7x7FAeDZ46foYZzyTKCEM brcU0ACVcfY2LsSd+zjposVpAn0HKqdQ5CAmdeP+lWwF62TVlN+MY0V4VPg9I=
Received: from localhost (unknown [24.28.108.183]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: nico@cryptonector.com) by pdx1-sub0-mail-a57.g.dreamhost.com (Postfix) with ESMTPSA id 2E40F7F159; Fri, 5 Jun 2020 11:18:27 -0700 (PDT)
Date: Fri, 05 Jun 2020 13:18:18 -0500
X-DH-BACKEND: pdx1-sub0-mail-a57
From: Nico Williams <nico@cryptonector.com>
To: Michael Richardson <mcr+ietf@sandelman.ca>
Cc: Stewart Bryant <stewart.bryant@gmail.com>, Craig Partridge <craig@tereschau.net>, ietf@ietf.org
Subject: Re: The TCP and UDP checksum algorithm may soon need updating
Message-ID: <20200605181816.GW18021@localhost>
References: <CAHQj4Cf_vgXYEL=x4DCEnpwNxZpJQSD-h6MWmhMWpYwPF9XFow@mail.gmail.com> <0D18B54B-2865-4A3C-813B-595EA17F6D8B@gmail.com> <32750.1591376396@localhost>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Disposition: inline
In-Reply-To: <32750.1591376396@localhost>
User-Agent: Mutt/1.9.4 (2018-02-28)
X-VR-OUT-STATUS: OK
X-VR-OUT-SCORE: -100
X-VR-OUT-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgeduhedrudegfedguddtlecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucggtfgfnhhsuhgsshgtrhhisggvpdfftffgtefojffquffvnecuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpeffhffvuffkfhggtggujggfsehttdertddtredvnecuhfhrohhmpefpihgtohcuhghilhhlihgrmhhsuceonhhitghosegtrhihphhtohhnvggtthhorhdrtghomheqnecuggftrfgrthhtvghrnhepffdtkeethfeuteeviefgfeegjeetjedvhfehgfdvtdefueejheelgeeuhffghffgnecukfhppedvgedrvdekrddutdekrddukeefnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmohguvgepshhmthhppdhhvghloheplhhotggrlhhhohhsthdpihhnvghtpedvgedrvdekrddutdekrddukeefpdhrvghtuhhrnhdqphgrthhhpefpihgtohcuhghilhhlihgrmhhsuceonhhitghosegtrhihphhtohhnvggtthhorhdrtghomheqpdhmrghilhhfrhhomhepnhhitghosegtrhihphhtohhnvggtthhorhdrtghomhdpnhhrtghpthhtohepnhhitghosegtrhihphhtohhnvggtthhorhdrtghomh
Archived-At: <https://mailarchive.ietf.org/arch/msg/ietf/DT3UMdwNtnoyJenzJu7TbH6e3d4>
X-BeenThere: ietf@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: IETF-Discussion <ietf.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ietf>, <mailto:ietf-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/ietf/>
List-Post: <mailto:ietf@ietf.org>
List-Help: <mailto:ietf-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ietf>, <mailto:ietf-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 05 Jun 2020 18:18:32 -0000

On Fri, Jun 05, 2020 at 12:59:56PM -0400, Michael Richardson wrote:
> I think that we must assume some amount of bit flips in memory between MACs
> (meaning both MAC CRC and MAC devices).   I wonder if this has also gotten
> worse now that ethernet controllers can calculate (and segment) traffic.
> 
> /me pines for ubiquitous deployment of AH.

Isn't it deprecated?  It's just ESP w/ AEAD ciphers / cipher modes now.