Re: [TLS] ALPN concerns

Wan-Teh Chang <wtc@google.com> Thu, 07 November 2013 07:30 UTC

Return-Path: <wtc@google.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 8D6E111E8242 for <tls@ietfa.amsl.com>; Wed, 6 Nov 2013 23:30:15 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.978
X-Spam-Level:
X-Spam-Status: No, score=-1.978 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, FM_FORGED_GMAIL=0.622, NO_RELAYS=-0.001]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id yBjZCrH7Szlc for <tls@ietfa.amsl.com>; Wed, 6 Nov 2013 23:30:15 -0800 (PST)
Received: from mail-vb0-x232.google.com (mail-vb0-x232.google.com [IPv6:2607:f8b0:400c:c02::232]) by ietfa.amsl.com (Postfix) with ESMTP id E81B111E820D for <tls@ietf.org>; Wed, 6 Nov 2013 23:30:14 -0800 (PST)
Received: by mail-vb0-f50.google.com with SMTP id x16so101275vbf.37 for <tls@ietf.org>; Wed, 06 Nov 2013 23:30:13 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=FXHMOsDBD0MOi/pAQthsokIeBU9gc207t4NYzmfY/N4=; b=jFm/JyCZeM6jNlgS9QK4unGC0yS+JIOHqJtOGmOUXoxogqu5RmusX+1N6hwX6ukRZc uVVuqCW6BbI7i37a9I4qLtKjZg+0VctrfZ2F6v6o4HGuUNcc+9A4OJ33b+TqtPsNXO9t /BDn+F5LiKbX7aUOf0eJwL9yHmveRc3iiW1j+m2wJnqdJQUjHWfLcAjos/6nHdb22zDe RQSIoy2etPO57vrqoteB7Fj9FYt58D8dgzWn/ZXGZ8khCiA3UU/JY+DUCxU0a8z/jTt5 deKyv1jVrTvu5HgVqH4sfWerhLS3Eh4sQzBn3Xs2PmayY0rdzQpO6p9y+f+J4pcghygC mWYQ==
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:content-type; bh=FXHMOsDBD0MOi/pAQthsokIeBU9gc207t4NYzmfY/N4=; b=QtmANrCCqvz6qQyLPbAgl3Bt4+gMz04aRwIF7jv9QXH6cX46K0XEX0XRYqQVMCBkzn kLmOaN/VdDV7epfyBpZ5wMvD10QAFOSj4ttw/vZmnv+z2qJsq3NMk9oIWL5UyQZbfzoY Oq4VeLu+b2+s3LshcQMsn64F572acN0bM/PkHGnz1lzfXnH2uZdGsbZHngBWhEr9pH0R QrAsitbJN3TMaO5v5vpWOgQs/8O7JL28XHnSWcULDw0ZY78MIxFZwAVmeK+rSI9/k5iy IrapjeezQKhMB33kbyCQXTGgZu8W/MOpCPRYsyoO6hzjsVGmahLvr8sYhAOMggk5wASJ 2WYQ==
X-Gm-Message-State: ALoCoQnwKaGAJevfUD9JKjFMrbZbuwQqg8BdnQqz6XvALK+FRcmcjeCUxQCbeXOaKO5LvOtayU/82I0spJdbNdAxLXuJYgWRd5zMsbokpDBw/bpvw4ys6Pocgg5Vrf7gsvO0O8WwGVtb8gwrdjpB2F2e3rwPNaxWk+b618oqqretCLsWdxBiPdpyEGY0BT4lo+/NB4IXaIj0
MIME-Version: 1.0
X-Received: by 10.220.47.10 with SMTP id l10mr32673vcf.32.1383809413357; Wed, 06 Nov 2013 23:30:13 -0800 (PST)
Received: by 10.52.167.10 with HTTP; Wed, 6 Nov 2013 23:30:13 -0800 (PST)
In-Reply-To: <CAL9PXLxEh50MTaixVrmm2-1KXUkfoiCz+r=jTqvUwQ9D9_Bwag@mail.gmail.com>
References: <9A043F3CF02CD34C8E74AC1594475C736540E268@uxcn10-tdc06.UoA.auckland.ac.nz> <E774C81546D66E429BF56B1474C7EBBA012CE328CB@SEAEMBX01.olympus.F5Net.com> <CAL9PXLzLrCygvS5o-uBAdMbz0U7bZf_L-eQZsbK+Z-eY-XWtRA@mail.gmail.com> <527A86A7.5080700@drh-consultancy.co.uk> <527AACEC.60109@drh-consultancy.co.uk> <CAL9PXLxEh50MTaixVrmm2-1KXUkfoiCz+r=jTqvUwQ9D9_Bwag@mail.gmail.com>
Date: Wed, 06 Nov 2013 23:30:13 -0800
Message-ID: <CALTJjxETdv_t_TJXeQTW1U5EA195xewYW0q8GRic7w=UMUsk5g@mail.gmail.com>
From: Wan-Teh Chang <wtc@google.com>
To: Adam Langley <agl@google.com>
Content-Type: text/plain; charset="ISO-8859-1"
Cc: "tls@ietf.org" <tls@ietf.org>
Subject: Re: [TLS] ALPN concerns
X-BeenThere: tls@ietf.org
X-Mailman-Version: 2.1.12
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: <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: Thu, 07 Nov 2013 07:30:15 -0000

On Wed, Nov 6, 2013 at 1:00 PM, Adam Langley <agl@google.com> wrote:
> On Wed, Nov 6, 2013 at 3:56 PM, Dr Stephen Henson
> <lists@drh-consultancy.co.uk> wrote:
>> I added this to the OpenSSL master branch in case anyone wants to test it.
>>
>> If enabled it uses a dummy extension[1] to pad the ClientHello with enough
>> zeroes to make it long enough.
>
> Likewise for Chrome: https://codereview.chromium.org/62103003

It would be nice if we could all use the same extension number for
this dummy extension.

Wan-Teh