IETF Logo Mail Archive

Re: [TLS] History of extensions

Eric Rescorla <ekr@networkresonance.com> Sat, 14 November 2009 09:03 UTC

Return-Path: <ekr@networkresonance.com>
X-Original-To: tls@core3.amsl.com
Delivered-To: tls@core3.amsl.com
Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 1D0AF3A67DF for <tls@core3.amsl.com>; Sat, 14 Nov 2009 01:03:42 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -0.098
X-Spam-Level:
X-Spam-Status: No, score=-0.098 tagged_above=-999 required=5 tests=[AWL=0.055, BAYES_00=-2.599, FH_HOST_EQ_D_D_D_DB=0.888, HELO_MISMATCH_COM=0.553, RCVD_IN_PBL=0.905, RDNS_DYNAMIC=0.1]
Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id gAOeTICVMDhR for <tls@core3.amsl.com>; Sat, 14 Nov 2009 01:03:41 -0800 (PST)
Received: from genesis-hsia.quadriga-www.com (2.26.235.80.sta.estpak.ee [80.235.26.2]) by core3.amsl.com (Postfix) with ESMTP id 407353A67A6 for <tls@ietf.org>; Sat, 14 Nov 2009 01:03:41 -0800 (PST)
Received: from [192.168.12.187] (helo=kilo.networkresonance.com) by genesis-hsia.quadriga-www.com with esmtp (Exim 3.34 #1) id 1N9EYF-0000Bq-00 for tls@ietf.org; Sat, 14 Nov 2009 11:04:11 +0200
Received: from kilo.local (localhost [127.0.0.1]) by kilo.networkresonance.com (Postfix) with ESMTP id 8154569F5C3; Sat, 14 Nov 2009 11:05:19 +0200 (EET)
Date: Sat, 14 Nov 2009 11:05:18 +0200
From: Eric Rescorla <ekr@networkresonance.com>
To: Nicolas Williams <Nicolas.Williams@sun.com>
In-Reply-To: <20091114082813.GD1105@Sun.COM>
References: <20091112181844.GE1105@Sun.COM> <200911122036.nACKa96m016227@fs4113.wdf.sap.corp> <20091112203847.GL1105@Sun.COM> <20091113082235.C55F469F381@kilo.networkresonance.com> <20091113164608.GT1105@Sun.COM> <20091113230816.753DB69F515@kilo.networkresonance.com> <20091114082813.GD1105@Sun.COM>
User-Agent: Wanderlust/2.15.5 (Almost Unreal) Emacs/22.3 Mule/5.0 (SAKAKI)
MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka")
Content-Type: text/plain; charset="US-ASCII"
Message-Id: <20091114090519.8154569F5C3@kilo.networkresonance.com>
Cc: tls@ietf.org
Subject: Re: [TLS] History of extensions
X-BeenThere: tls@ietf.org
X-Mailman-Version: 2.1.9
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/listinfo/tls>, <mailto:tls-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/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: Sat, 14 Nov 2009 09:03:42 -0000

At Sat, 14 Nov 2009 02:28:13 -0600,
Nicolas Williams wrote:
> 
> On Sat, Nov 14, 2009 at 01:08:16AM +0200, Eric Rescorla wrote:
> > At Fri, 13 Nov 2009 10:46:09 -0600,
> > Nicolas Williams wrote:
> > > The post with message-ID <20091113005419.GQ1105@Sun.COM>, subject
> > > "Comments on draft-rescorla-tls-renegotiate", sent at 18:54:19 -0600
> > > yesterday most certainly described no Hello extensions, only a Finished
> > > message verify_data computation change.
> > 
> > Yes, and it doesn't allow you to probe in a compatible way.
> 
> No, that's not correct.  On initial connection there's no need to do
> anything special (sure, it's nice to know that your peer doesn't have
> this vuln, but you don't have to).

Well, I don't know what "have to" means. Some clients may have
the policy of not connecting to servers that aren't upgraded.
The existing proposal allows that. Yours does not.

-Ekr

v2.27.6 | Report a Bug | By Email | System Status