IETF Logo Mail Archive

Re: [TLS] Negotiating with known_configuration

Ilari Liusvaara <ilari.liusvaara@elisanet.fi> Tue, 21 July 2015 15:17 UTC

Return-Path: <ilari.liusvaara@elisanet.fi>
X-Original-To: tls@ietfa.amsl.com
Delivered-To: tls@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 2C7EA1B2F2B for <tls@ietfa.amsl.com>; Tue, 21 Jul 2015 08:17:57 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.901
X-Spam-Level:
X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001] autolearn=ham
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 UnN4yVTbvMKa for <tls@ietfa.amsl.com>; Tue, 21 Jul 2015 08:17:55 -0700 (PDT)
Received: from emh04.mail.saunalahti.fi (emh04.mail.saunalahti.fi [62.142.5.110]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 68A271A0252 for <tls@ietf.org>; Tue, 21 Jul 2015 08:17:51 -0700 (PDT)
Received: from LK-Perkele-VII (a91-155-194-207.elisa-laajakaista.fi [91.155.194.207]) by emh04.mail.saunalahti.fi (Postfix) with ESMTP id 830D11A264F; Tue, 21 Jul 2015 18:17:49 +0300 (EEST)
Date: Tue, 21 Jul 2015 18:17:49 +0300
From: Ilari Liusvaara <ilari.liusvaara@elisanet.fi>
To: Eric Rescorla <ekr@rtfm.com>
Message-ID: <20150721151749.GA24790@LK-Perkele-VII>
References: <CABkgnnUn5_Wo9XDRe=KQKO64MWcBGw0Pk6aviyigR+H7yVBaUg@mail.gmail.com> <CABcZeBP-2GudRXCHWBnWV7fnTuv-4nAzyxxY_FJx7UsPF_6KFg@mail.gmail.com> <CABkgnnVswNWk-ZOD32EvfJ=ORQWTXBPAKs51k9tRq3vspzi3jQ@mail.gmail.com> <CABcZeBNXqkJrEYFm1Z7cW4pzNcxBhsDVNZv_HNQFcXOG2x9_pg@mail.gmail.com> <20150721124110.GA20920@LK-Perkele-VII> <CABcZeBMzhsFUGDG_-8U_BJFppRzkby3B2sgz1BFargoSW+DQhg@mail.gmail.com> <20150721130850.GA21741@LK-Perkele-VII> <CABkgnnUTHOJa98u_vMfRCMoEGXUNAK6ax=1TDvVaG5Eeq3EA7w@mail.gmail.com> <20150721141559.GA23844@LK-Perkele-VII> <CABcZeBN60pxCGQhRaqXACk75A_=i_Cs_rnVyh2zpt66q3YucDg@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Disposition: inline
In-Reply-To: <CABcZeBN60pxCGQhRaqXACk75A_=i_Cs_rnVyh2zpt66q3YucDg@mail.gmail.com>
User-Agent: Mutt/1.5.23 (2014-03-12)
Sender: Ilari Liusvaara <ilari.liusvaara@elisanet.fi>
Archived-At: <http://mailarchive.ietf.org/arch/msg/tls/3CBbLsvKQyHxRBt38fY58DjFSLs>
Cc: "tls@ietf.org" <tls@ietf.org>
Subject: Re: [TLS] Negotiating with known_configuration
X-BeenThere: tls@ietf.org
X-Mailman-Version: 2.1.15
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, 21 Jul 2015 15:17:57 -0000

On Tue, Jul 21, 2015 at 05:09:31PM +0200, Eric Rescorla wrote:
> On Tue, Jul 21, 2015 at 4:15 PM, Ilari Liusvaara <
> ilari.liusvaara@elisanet.fi> wrote:
> >
> > Also, with regard to ending 0RTT, even without encrypted content
> > types. Either I am misunderstanding something, or:
> >
> > - Client: Send ClientHello.
> > - Server: Read ClientHello.
> > - Client: Send 0-RTT & client cert.
> > - Server: Read 0-RTT & client cert.
> > - Client: Wait for server reply.
> > - Server: Wait for handshake message to end 0-RTT.
> > *deadlock*.
> 
> 
> Is this the case where the server is accepting 0-RTT or  rejecting it?

Apparently, only for accepting case.

(If the server rejects, it can reply immediately, avoiding this
deadlock).


-Ilari

v2.19.0 | Report a Bug | By Email