Re: [kitten] draft-hansen-scram-sha256 and incorporating session hashing for channel binding
Nico Williams <nico@cryptonector.com> Sat, 23 May 2015 20:26 UTC
Return-Path: <nico@cryptonector.com>
X-Original-To: kitten@ietfa.amsl.com
Delivered-To: kitten@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 7C3DA1A1BEA for <kitten@ietfa.amsl.com>; Sat, 23 May 2015 13:26:24 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.666
X-Spam-Level:
X-Spam-Status: No, score=-1.666 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, IP_NOT_FRIENDLY=0.334, RCVD_IN_DNSWL_NONE=-0.0001] autolearn=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 fEfCKW5aNDeF for <kitten@ietfa.amsl.com>; Sat, 23 May 2015 13:26:20 -0700 (PDT)
Received: from homiemail-a63.g.dreamhost.com (sub4.mail.dreamhost.com [69.163.253.135]) by ietfa.amsl.com (Postfix) with ESMTP id C6F661A1BDA for <kitten@ietf.org>; Sat, 23 May 2015 13:26:20 -0700 (PDT)
Received: from homiemail-a63.g.dreamhost.com (localhost [127.0.0.1]) by homiemail-a63.g.dreamhost.com (Postfix) with ESMTP id 7538D2F4071; Sat, 23 May 2015 13:26:20 -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=/rxiy2Ge9CgC3c Gniiy7m6cWxSY=; b=yC605zdbAKOjwNxmOLjT2zZGR6KWblh0uo7IOkw9hYRISz KcZi4LQsDZwWGn35C+ncVOCF3Y84A5kQ+NZ1hZjkt6+ybYSoidC2/sd4n0B0ipvG 0HhSnoqD6FFHUXzkZF8Sj9hNWcNX8WU5Sf1VzwBUjTWxf3AsCGq2YJSL2hghM=
Received: from localhost (108-207-244-174.lightspeed.austtx.sbcglobal.net [108.207.244.174]) (Authenticated sender: nico@cryptonector.com) by homiemail-a63.g.dreamhost.com (Postfix) with ESMTPA id F2D912F4065; Sat, 23 May 2015 13:26:19 -0700 (PDT)
Date: Sat, 23 May 2015 15:26:19 -0500
From: Nico Williams <nico@cryptonector.com>
To: Alexey Melnikov <alexey.melnikov@isode.com>
Message-ID: <20150523202618.GC2166@localhost>
References: <54DC00D0.2050900@cs.tcd.ie> <54EC66FF.50603@cs.tcd.ie> <54ECABD8.3090902@att.com> <87zj82f1yj.fsf@latte.josefsson.org> <54F4B8B8.8090406@isode.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Disposition: inline
In-Reply-To: <54F4B8B8.8090406@isode.com>
User-Agent: Mutt/1.5.21 (2010-09-15)
Archived-At: <http://mailarchive.ietf.org/arch/msg/kitten/6D59Vca1T2_jXl7ZaESp9tKagh0>
Cc: "kitten@ietf.org" <kitten@ietf.org>
Subject: Re: [kitten] draft-hansen-scram-sha256 and incorporating session hashing for channel binding
X-BeenThere: kitten@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: Common Authentication Technologies - Next Generation <kitten.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/kitten>, <mailto:kitten-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/kitten/>
List-Post: <mailto:kitten@ietf.org>
List-Help: <mailto:kitten-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/kitten>, <mailto:kitten-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sat, 23 May 2015 20:26:24 -0000
On Mon, Mar 02, 2015 at 07:23:36PM +0000, Alexey Melnikov wrote: > On 25/02/2015 15:25, Simon Josefsson wrote: > >Tony Hansen <tony@att.com> writes: > >If people like the tls-session-hash approach (I'm not in that category, > >but there may be consensus around it), the proper fix is to update RFC > >5802 and reference tls-session-hash as a normative reference. This will > >take care of the problem, as you could copy that text into your > >document. If you are looking for a text change here, it would be: > > > > To be secure SCRAM-SHA-256-PLUS has to be used over a TLS channel that > > MUST have [TLS-SESSION-HASH] negotiated. > > > >Personally, I would prefer to change to another mandatory channel > >binding that is secure for all TLS versions. > Before we make the decisions between referencing tls-session-hash > versa a new channel binding, can you sketch out how the new channel > binding is going to be defined? > > (If we choose to define a new channel binding, I think Kitten WG is > the right place for doing this work.) There is no need to define a new channel binding. Existing TLS implementations need to be fixed regardless. There's nothing GSS- or SASL-mechanism-specific here. Nico --
- [kitten] AD sponsoring draft-hansen-scram-sha256 Stephen Farrell
- Re: [kitten] AD sponsoring draft-hansen-scram-sha… Peter Saint-Andre - &yet
- Re: [kitten] AD sponsoring draft-hansen-scram-sha… Tony Hansen
- Re: [kitten] AD sponsoring draft-hansen-scram-sha… Peter Saint-Andre - &yet
- Re: [kitten] AD sponsoring draft-hansen-scram-sha… Simon Josefsson
- Re: [kitten] [saag] AD sponsoring draft-hansen-sc… Simon Josefsson
- Re: [kitten] [saag] AD sponsoring draft-hansen-sc… Alexey Melnikov
- Re: [kitten] [saag] AD sponsoring draft-hansen-sc… Dave Cridland
- Re: [kitten] AD sponsoring draft-hansen-scram-sha… Simon Josefsson
- Re: [kitten] [saag] AD sponsoring draft-hansen-sc… Martin Thomson
- Re: [kitten] [saag] AD sponsoring draft-hansen-sc… Sam Whited
- Re: [kitten] [saag] AD sponsoring draft-hansen-sc… Stephen Farrell
- Re: [kitten] [saag] AD sponsoring draft-hansen-sc… Tony Hansen
- Re: [kitten] [saag] AD sponsoring draft-hansen-sc… Tony Hansen
- [kitten] draft-hansen-scram-sha256 and the hash i… Tony Hansen
- [kitten] draft-hansen-scram-sha256 and incorporat… Tony Hansen
- Re: [kitten] draft-hansen-scram-sha256 and the ha… Dave Cridland
- Re: [kitten] draft-hansen-scram-sha256 and the ha… Alexey Melnikov
- Re: [kitten] draft-hansen-scram-sha256 and the ha… Tony Hansen
- Re: [kitten] draft-hansen-scram-sha256 and the ha… Simon Josefsson
- Re: [kitten] draft-hansen-scram-sha256 and incorp… Simon Josefsson
- Re: [kitten] draft-hansen-scram-sha256 and incorp… Alexey Melnikov
- Re: [kitten] draft-hansen-scram-sha256 and incorp… Simon Josefsson
- Re: [kitten] draft-hansen-scram-sha256 and incorp… Alexey Melnikov
- Re: [kitten] draft-hansen-scram-sha256 and incorp… Tony Hansen
- Re: [kitten] [saag] AD sponsoring draft-hansen-sc… Karthikeyan Bhargavan
- Re: [kitten] draft-hansen-scram-sha256 and incorp… Simon Josefsson
- Re: [kitten] [saag] AD sponsoring draft-hansen-sc… Simon Josefsson
- Re: [kitten] draft-hansen-scram-sha256 and incorp… Nico Williams
- Re: [kitten] draft-hansen-scram-sha256 and incorp… Nico Williams
- Re: [kitten] draft-hansen-scram-sha256 and incorp… Simon Josefsson
- Re: [kitten] draft-hansen-scram-sha256 and incorp… Simon Josefsson
- Re: [kitten] draft-hansen-scram-sha256 and incorp… Stephen Farrell
- Re: [kitten] draft-hansen-scram-sha256 and incorp… Nico Williams
- Re: [kitten] draft-hansen-scram-sha256 and incorp… Tony Hansen
- Re: [kitten] draft-hansen-scram-sha256 and incorp… Nico Williams
- Re: [kitten] draft-hansen-scram-sha256 and incorp… Simon Josefsson
- Re: [kitten] draft-hansen-scram-sha256 and incorp… Tony Hansen
- Re: [kitten] draft-hansen-scram-sha256 and incorp… Nico Williams
- Re: [kitten] draft-hansen-scram-sha256 and incorp… Simon Josefsson
- Re: [kitten] draft-hansen-scram-sha256 and incorp… Simon Josefsson
- Re: [kitten] draft-hansen-scram-sha256 and incorp… Nico Williams
- Re: [kitten] draft-hansen-scram-sha256 and incorp… Tony Hansen