Re: [TLS] Adoption call for Deprecating Obsolete Key Exchange Methods in TLS

Ilari Liusvaara <ilariliusvaara@welho.com> Fri, 06 August 2021 18:50 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 84A403A103A for <tls@ietfa.amsl.com>; Fri, 6 Aug 2021 11:50:34 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.498
X-Spam-Level:
X-Spam-Status: No, score=-1.498 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, KHOP_HELO_FCRDNS=0.399, SPF_HELO_NONE=0.001, SPF_NONE=0.001, URIBL_BLOCKED=0.001] autolearn=no 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 s6ByHa-2JJ4Y for <tls@ietfa.amsl.com>; Fri, 6 Aug 2021 11:50:30 -0700 (PDT)
Received: from welho-filter1.welho.com (welho-filter1b.welho.com [83.102.41.27]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 685123A1037 for <tls@ietf.org>; Fri, 6 Aug 2021 11:50:30 -0700 (PDT)
Received: from localhost (localhost [127.0.0.1]) by welho-filter1.welho.com (Postfix) with ESMTP id ABF291EA38 for <tls@ietf.org>; Fri, 6 Aug 2021 21:50:27 +0300 (EEST)
X-Virus-Scanned: Debian amavisd-new at pp.htv.fi
Received: from welho-smtp1.welho.com ([IPv6:::ffff:83.102.41.84]) by localhost (welho-filter1.welho.com [::ffff:83.102.41.23]) (amavisd-new, port 10024) with ESMTP id 5EPLN0RrekJT for <tls@ietf.org>; Fri, 6 Aug 2021 21:50:27 +0300 (EEST)
Received: from LK-Perkele-VII2 (87-92-216-160.rev.dnainternet.fi [87.92.216.160]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by welho-smtp1.welho.com (Postfix) with ESMTPSA id 73134292 for <tls@ietf.org>; Fri, 6 Aug 2021 21:50:26 +0300 (EEST)
Date: Fri, 6 Aug 2021 21:50:26 +0300
From: Ilari Liusvaara <ilariliusvaara@welho.com>
To: "<tls@ietf.org>" <tls@ietf.org>
Message-ID: <YQ2EcpyXuCyRaJBr@LK-Perkele-VII2.locald>
References: <CAOgPGoARpxr8-FzYJPRcup9XF-DRv875aAnuNZtoLPHM9-6j-w@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
In-Reply-To: <CAOgPGoARpxr8-FzYJPRcup9XF-DRv875aAnuNZtoLPHM9-6j-w@mail.gmail.com>
Sender: ilariliusvaara@welho.com
Archived-At: <https://mailarchive.ietf.org/arch/msg/tls/Gfx_jYH83GheAvcKSW-DGL4ciuk>
Subject: Re: [TLS] Adoption call for Deprecating Obsolete Key Exchange Methods in TLS
X-BeenThere: tls@ietf.org
X-Mailman-Version: 2.1.29
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: Fri, 06 Aug 2021 18:50:35 -0000

On Thu, Jul 29, 2021 at 02:50:20PM -0700, Joseph Salowey wrote:
> This is a working group call for adoption of Deprecating Obsolete Key
> Exchange Methods in TLS  (draft-aviram-tls-deprecate-obsolete-kex-00
> <https://datatracker.ietf.org/doc/draft-aviram-tls-deprecate-obsolete-kex/>).
> There was support for adopting this draft at the IETF 111 meeting.  Please
> review the draft and post your comments to the list by Friday, August 13,
> 2021.

Adopt. And then fold the material from deprecate-ffdhe in.

Then I think nobody cares about KRB5 key exchange:

- There are no AES ciphers for it.
- It does not work with TLS 1.3 at all, and there are no plans to make
  it work.


-Ilari