Re: [TLS] early IANA code point assignment request for draft-ietf-tls-ecdhe-psk-aead

Ilari Liusvaara <ilariliusvaara@welho.com> Tue, 08 November 2016 06:07 UTC

Return-Path: <ilariliusvaara@welho.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 3AE46129849 for <tls@ietfa.amsl.com>; Mon, 7 Nov 2016 22:07:55 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -3.397
X-Spam-Level:
X-Spam-Status: No, score=-3.397 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, RP_MATCHES_RCVD=-1.497] 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 FY14FM2J1qPx for <tls@ietfa.amsl.com>; Mon, 7 Nov 2016 22:07:53 -0800 (PST)
Received: from welho-filter3.welho.com (welho-filter3.welho.com [83.102.41.25]) by ietfa.amsl.com (Postfix) with ESMTP id E763C1299B9 for <tls@ietf.org>; Mon, 7 Nov 2016 22:07:52 -0800 (PST)
Received: from localhost (localhost [127.0.0.1]) by welho-filter3.welho.com (Postfix) with ESMTP id 3506B12D6D; Tue, 8 Nov 2016 08:07:51 +0200 (EET)
X-Virus-Scanned: Debian amavisd-new at pp.htv.fi
Received: from welho-smtp2.welho.com ([IPv6:::ffff:83.102.41.85]) by localhost (welho-filter3.welho.com [::ffff:83.102.41.25]) (amavisd-new, port 10024) with ESMTP id 3V1cNWSHgrtw; Tue, 8 Nov 2016 08:07:50 +0200 (EET)
Received: from LK-Perkele-V2 (87-92-51-204.bb.dnainternet.fi [87.92.51.204]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by welho-smtp2.welho.com (Postfix) with ESMTPSA id DA17321C; Tue, 8 Nov 2016 08:07:50 +0200 (EET)
Date: Tue, 08 Nov 2016 08:07:47 +0200
From: Ilari Liusvaara <ilariliusvaara@welho.com>
To: Daniel Migault <daniel.migault@ericsson.com>
Message-ID: <20161108060747.GA8585@LK-Perkele-V2.elisa-laajakaista.fi>
References: <7D3571C9-9873-4D88-9666-A47D0CD77671@sn3rd.com> <1470821613.2539.44.camel@redhat.com> <CABkgnnVYt_-SwRbO3Jm0ngpOEccL4UNV6wvgZFMco1G9z0uwfw@mail.gmail.com> <D41FA10A.52E40%john.mattsson@ericsson.com> <CABkgnnXKYrop5OA3CNSA6CocJ88esMUM47zcw3g1BJc+LrXXbQ@mail.gmail.com> <CADZyTkmU1uadugpsD+_o8zog0DG8s_mzvKN98m19-4-egWp-NA@mail.gmail.com> <B7439202-5FDC-441E-AAB6-211D67368025@sn3rd.com> <CY1PR15MB0778A186FE5D6D2D7FA19BBFFFD30@CY1PR15MB0778.namprd15.prod.outlook.com> <20161018163104.GA2405@LK-Perkele-V2.elisa-laajakaista.fi> <CADZyTk=C0crhj-OPJdWB_fA3Jy+4ePX7iggd6MhYcvKQUsWUPA@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Disposition: inline
In-Reply-To: <CADZyTk=C0crhj-OPJdWB_fA3Jy+4ePX7iggd6MhYcvKQUsWUPA@mail.gmail.com>
User-Agent: Mutt/1.5.23 (2014-03-12)
Sender: ilariliusvaara@welho.com
Archived-At: <https://mailarchive.ietf.org/arch/msg/tls/UtOAzvWGlaR-E_gtRIrDtZa-l-M>
Cc: "tls@ietf.org" <tls@ietf.org>
Subject: Re: [TLS] early IANA code point assignment request for draft-ietf-tls-ecdhe-psk-aead
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: Tue, 08 Nov 2016 06:07:55 -0000

On Mon, Nov 07, 2016 at 10:16:13PM -0500, Daniel Migault wrote:
> Hi,
> 
> The current draft is only considering TLS1.2. TLS1.3 is only mentioned for
> advocating AEAD.
> 
> Do you think we should add text that details how to proceed with TLS1.3 ?
> If so what do you think of the following text ?
 
That is, I think the dependency on TLS 1.3 should be downgraded to
informative (unless that has already been done).

> 
> Yours,
> Daniel
> 
>    The assigned code points are only expected to be used for TLS1.2.
>    TLS1.3 does not follow the same name convention.  Instead TLS1.3
>    cipher suites are designated according to the AEAD suite as well as
>    the hash function used.  The current combination of AEAD algorithms
>    and Hash fucntion are already defined in TLS.1.3 so there is no need
>    to add additional cipher suites for TLS1.3.

Seems reasonable.

>    Instead, in order to used the following ECDHE_PSK authentication
>    method.  TLS1.3 uses a combination of the "key_share" and
>    "psk_key_exchange_modes" extentions. "psk_key_exchange_modes"
>    extension sets its mode to psk_dhe_ke.  The "key_share" extention
>    contains a KeyShareEntry structure that carries the ECDHE parameters.
> 

I think 'used the following' -> 'use the' and first period should be
comma.


-Ilari