Re: [TLS] I-D Action: draft-ietf-tls-ecdhe-psk-aead-00.txt

Martin Thomson <martin.thomson@gmail.com> Wed, 09 November 2016 00:24 UTC

Return-Path: <martin.thomson@gmail.com>
X-Original-To: tls@ietfa.amsl.com
Delivered-To: tls@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 1893B129513 for <tls@ietfa.amsl.com>; Tue, 8 Nov 2016 16:24:31 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.7
X-Spam-Level:
X-Spam-Status: No, score=-2.7 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.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 hcuzW1O8mMOM for <tls@ietfa.amsl.com>; Tue, 8 Nov 2016 16:24:29 -0800 (PST)
Received: from mail-qt0-x233.google.com (mail-qt0-x233.google.com [IPv6:2607:f8b0:400d:c0d::233]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 7F8C5129462 for <tls@ietf.org>; Tue, 8 Nov 2016 16:24:29 -0800 (PST)
Received: by mail-qt0-x233.google.com with SMTP id w33so117846875qtc.3 for <tls@ietf.org>; Tue, 08 Nov 2016 16:24:29 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=V7ybMVx7S+3wVaS4m/zVPXKT7HOmxPqzc8ZT35uVf+U=; b=u403PzkSGFceLlVOqRQ3TTKzL3PzUSopGxmExNgLtL20Ha14y1ar6WIiVVezq7XqM4 qwdgdkc+CUeGrtUvPbabWhtE9KC1Wfi8Nb/kjEVnoV9OQVPrgyQ0Z/iQ4FYGK02iPRQU KV0Lgga+gRzuPYwLkIH/McwBSjMso4n+yZpweTpQyOzQ77xCxmPsrecKBLREr1E/ga0+ eOuLd3ZirouUXFpHJgi2oXWuqqHacOUPTPm9KHT7uQhMQMIeDPt6R1Sj/NsO4KRiazho 5xzUvXsXknnLYJKS3f11zwI0LK3vRThQIcmHeaxG9yeIrkpUVVbw/yEvbCSSUwm7J1lb srqQ==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=V7ybMVx7S+3wVaS4m/zVPXKT7HOmxPqzc8ZT35uVf+U=; b=BjDS/hUI5I1lqGaIzqRMVbfWbkFIpLdsf9WWb7b0DytWQiVz99Y5fym7R5mpvKG/O5 zIFibl8PU1adgHdOqcs+ztCgSwZElqFnWYgkuliQSdlxfWvbTv6BhfXqVdUGUvFeaHji mN/2i9rC+f8VJ14VCOY3pfq/Qb3dQza2c69H4JUBuJzDOIqXIAZVDK8XfEudFmiZxoHV otO05buRCZhwKUlSfRdVRxYqHxTcRgbgv+e9Tk89ANOKD+LK+rbdUOmhujjZzBXFHSA6 TVJ5l3AQ6OEW9uMhZBeCbUv4m9vY/mJB63RYWNjdROSatetPiuj3gP0vw9I7kG1gHutu IgZg==
X-Gm-Message-State: ABUngvfyQ/UC5pXJyyaTViLaLZ8090hEgp9rrrY3NLdigJRMvJlWvzbiuEhu3mPs6EisOFB4PMMlZcwvGiLSqQ==
X-Received: by 10.237.53.132 with SMTP id c4mr16384943qte.85.1478651068672; Tue, 08 Nov 2016 16:24:28 -0800 (PST)
MIME-Version: 1.0
Received: by 10.140.85.7 with HTTP; Tue, 8 Nov 2016 16:24:28 -0800 (PST)
In-Reply-To: <CADZyTk=Z8VV3LRsSbvL5Vg3PdHeMwcnm538M8CZkdZMF0TEHYQ@mail.gmail.com>
References: <20160527171935.11166.82258.idtracker@ietfa.amsl.com> <7a3597ae-92b8-23c8-b2c3-357f6fdb6792@bouncycastle.org> <6CE18F17-F8E0-4F4A-95A4-BE9B3A8250A2@sn3rd.com> <80bc8ae67e0ba0e2355b26bdbb34d1b6.squirrel@www.trepanning.net> <D41FA5C6.52E9B%john.mattsson@ericsson.com> <CADZyTkkJv2yyd5p7CR8p5gHCE+gjWQNu-+39N4RW-26gh+NzSA@mail.gmail.com> <CADZyTkmHwL=2MVQOUKwDkMur_gMiT_00Q6EY-h=zOUbfeddAOA@mail.gmail.com> <CADZyTkm05WD_DSHFUJMtPughDQKuS2-ZwRVwuHPFdLh=tAthzA@mail.gmail.com> <1478593476.2532.29.camel@redhat.com> <CADZyTknYBNHCucPxZODCLrjvA-UvPuFojkTfUXhh0n-y_eekVA@mail.gmail.com> <1478598547.2532.57.camel@redhat.com> <CADZyTk=Z8VV3LRsSbvL5Vg3PdHeMwcnm538M8CZkdZMF0TEHYQ@mail.gmail.com>
From: Martin Thomson <martin.thomson@gmail.com>
Date: Wed, 09 Nov 2016 11:24:28 +1100
Message-ID: <CABkgnnXdtkeshZSpUvqH7uk0KAPYqKdcq+JZy4i0bGJinWJFQg@mail.gmail.com>
To: Daniel Migault <daniel.migault@ericsson.com>
Content-Type: text/plain; charset="UTF-8"
Archived-At: <https://mailarchive.ietf.org/arch/msg/tls/lp8BtEBci1MBTMlqitKcBihSL8I>
Cc: "tls@ietf.org" <tls@ietf.org>
Subject: Re: [TLS] I-D Action: draft-ietf-tls-ecdhe-psk-aead-00.txt
X-BeenThere: tls@ietf.org
X-Mailman-Version: 2.1.17
Precedence: list
List-Id: "This is the mailing list for the Transport Layer Security working group of the IETF." <tls.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/tls>, <mailto:tls-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/tls/>
List-Post: <mailto:tls@ietf.org>
List-Help: <mailto:tls-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/tls>, <mailto:tls-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 09 Nov 2016 00:24:31 -0000

On 8 November 2016 at 21:08, Daniel Migault <daniel.migault@ericsson.com> wrote:
> TLS enable curve negotiation but not for code point. This makes restrictions
> on code points hard to implement.  As a result Endpoints MAY treat
> negotiation of key sizes smaller than the lower limits as a connection error
> of type insufficient_security(71) for TLS 1.2 and TLS 1.3.

I really had a hard time parsing this.  You don't connect this to
Diffie-Hellman at all, but I think that is what you are talking about.
But if your point is that this is an ECDHE-specific draft, then you
don't need to say anything at all.

nit "TLS enables"