IETF Logo Mail Archive

Re: [TLS] Asking for certificate authentication when doing 0-RTT

Martin Thomson <martin.thomson@gmail.com> Fri, 20 May 2016 20:43 UTC

Return-Path: <martin.thomson@gmail.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 E44F212D620 for <tls@ietfa.amsl.com>; Fri, 20 May 2016 13:43:22 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2
X-Spam-Level:
X-Spam-Status: No, score=-2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com
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 nq-pHQl5fcia for <tls@ietfa.amsl.com>; Fri, 20 May 2016 13:43:21 -0700 (PDT)
Received: from mail-ig0-x229.google.com (mail-ig0-x229.google.com [IPv6:2607:f8b0:4001:c05::229]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A071C12D61E for <tls@ietf.org>; Fri, 20 May 2016 13:43:21 -0700 (PDT)
Received: by mail-ig0-x229.google.com with SMTP id vs11so27412551igb.1 for <tls@ietf.org>; Fri, 20 May 2016 13:43:21 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc; bh=5imVi6aDQ0VzRHUFfnxhnRuUPLDjtH0W1N6rvVezids=; b=oo9We7QIpz6tAsHRwSrEnLqqY5IN82tcuB8Wn0L2G559FcTEEgJcB6+1NX3R9aP4qe E43xdnRlRIf5fCLeqB9TWd4lxH/2J2mfiKhP8eDvuBkrh/jrhHW1cVc18Flvp83WgAiG gYVt0oedPNj6l4hlOZyLaXjuCmFwcZUJYCroZadP7+9z1U+7goAGyfA+lHnWwzRr6S5P 5W8qUFZpua4fHNU8OHtESfOUQ+Y7JWnxVevmUrpMcTPbeVEC7iH45honTzU3NBUO3Kxf w5C8+a5fefYRFQ+sYWjWtisSszxjCl3r78g5Mq3XAGCOux9kePN5QfUIxbvN4Xd+M515 Bl/A==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc; bh=5imVi6aDQ0VzRHUFfnxhnRuUPLDjtH0W1N6rvVezids=; b=B8p87DiPHzseSB7LGTTp5dSKuCTkhei3tBnt0xTULSI57UDtYSLGtTknenmJyMipSu OY7ZRLGbbLICxsVS71xkd1hyrQsj8KjpsYXTy4hoTJg+iJTAihyaIDP9jAdUI6ZypL95 TwrrmCifHCXkPV2Q6C6PlU21exSMuLfuaqv+7Et9O3oiMhztrR8aQDVh8gBHk9N3/bvF iLsYirX2pxMETowxCulOeCa/R+FVn++I8pHxTZStP636zTIZ5g8BXA2H3MzMzbvW5fkn f6VQKl4tngenaZr1ZjV98YGYIAUn2UPLl/Fdsa15ttwPrGArihC4XQRbVF4MG47Gf45L 7VDw==
X-Gm-Message-State: AOPr4FUdYvLBHuY7d2kLk4WfLmQhcUO1bEJFFIeyDAT5GezuCXDzZDfpuJZSPG1uC3pSh4FePIl/LhuFu8SKBQ==
MIME-Version: 1.0
X-Received: by 10.50.122.68 with SMTP id lq4mr4803660igb.77.1463777000926; Fri, 20 May 2016 13:43:20 -0700 (PDT)
Received: by 10.36.43.23 with HTTP; Fri, 20 May 2016 13:43:20 -0700 (PDT)
In-Reply-To: <20160520194115.GA5467@LK-Perkele-V2.elisa-laajakaista.fi>
References: <CABkgnnXoNT7BBbbHGBMnb3iNwjj4ZVSNavrKgQFG-hiPGw96Bw@mail.gmail.com> <20160520194115.GA5467@LK-Perkele-V2.elisa-laajakaista.fi>
Date: Fri, 20 May 2016 16:43:20 -0400
Message-ID: <CABkgnnU48zbAJWe9U=omC4OA+ogk_EQ+eWDLkdqBeZDbOseYtA@mail.gmail.com>
From: Martin Thomson <martin.thomson@gmail.com>
To: Ilari Liusvaara <ilariliusvaara@welho.com>
Content-Type: text/plain; charset="UTF-8"
Archived-At: <http://mailarchive.ietf.org/arch/msg/tls/_x-n56x6x2KgzIarjwo6HR43M0I>
Cc: "tls@ietf.org" <tls@ietf.org>
Subject: Re: [TLS] Asking for certificate authentication when doing 0-RTT
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: Fri, 20 May 2016 20:43:23 -0000

On 20 May 2016 at 15:41, Ilari Liusvaara <ilariliusvaara@welho.com> wrote:
> - How is the capability signaled? New flag bits in session ticket
>   for these ciphersuites?

Yes, I realized it yesterday that I had neglected to define the bit
that this needs.  Of course a client could decide to do this
unilaterally.

> - This mechanism has session ticket lifetime limited by the certificate
>   lifetime, right?

There is a session ticket, which has a lifetime.  The certificate has
to be constant, so if that expires, then you can't connect.  So yes,
both limits would seem to apply.

v2.23.0 | Report a Bug | By Email