Re: [TLS] draft-ietf-tls-esni feedback

Eric Rescorla <ekr@rtfm.com> Tue, 22 October 2019 18:11 UTC

Return-Path: <ekr@rtfm.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 CD1C51208DE for <tls@ietfa.amsl.com>; Tue, 22 Oct 2019 11:11:09 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.896
X-Spam-Level:
X-Spam-Status: No, score=-1.896 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=rtfm-com.20150623.gappssmtp.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 w8XYkpJty91o for <tls@ietfa.amsl.com>; Tue, 22 Oct 2019 11:11:07 -0700 (PDT)
Received: from mail-lf1-x12d.google.com (mail-lf1-x12d.google.com [IPv6:2a00:1450:4864:20::12d]) (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 731931208A0 for <tls@ietf.org>; Tue, 22 Oct 2019 11:11:07 -0700 (PDT)
Received: by mail-lf1-x12d.google.com with SMTP id t8so13849702lfc.13 for <tls@ietf.org>; Tue, 22 Oct 2019 11:11:07 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rtfm-com.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=NgM/O/Y6WRVBFwxnI6cUmA1yCymsGq6ytSiyMp38nSI=; b=o6h1y0NYLIJJfhzRBTMRfjbgO1d7lFXQVnSAe7RCOvm5AdWBXFbNQyJEMZGInajlBC y8NLFd+zKgEUIqy31fTtF8kIEuF4pMsZPQvp8e9wm2tbZSodbbyVJfs6eDCpbm4xaNau 4WhS4vXWGYAVeAAKNCVBoOdAqq8PnDO5zuSAMkex9p9cAxbjwB4X6UMIPIdS3D4TK9TQ BHL3QrozSm5kTXssxRGRx1/xYax/FEYj33+RB7itrp6QKCZXhFbrY0K8w3qKcJVj+5jQ T7/CNRmZOKCgRrxMHAEnI3Wd9ApNgrYWBDND6Ab+v+GbWj1GWhMEyNlNJ87On8DhI02z NxVw==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=NgM/O/Y6WRVBFwxnI6cUmA1yCymsGq6ytSiyMp38nSI=; b=X+fFTOA7Ngwaa4VCghKlsALNP/uPsWphQLklF4f5o/A6xd9lOsXuNWym1vQRreuO4l 3L6M8cPkjl6RR/LP1FoAb5btfPdJrOzPkrpGMOYo/1ZHhhYMCrM3pCfHFftFwrrjZWIt gTPgcwgo8ogh8JqwjYbfUcNQIfxwHACIjaW6nVVbK8f+p8WZS7AIO/3ieCI5bo1i/pWc i+dBm+GQoanu7SREv6R7m2yETxzTf/GWCq1oXeauPkrhR3fy1M+rNJq+JhEuRCU+mNSy +031ZVh40WPbO2B5bo42um0NX6CzvFMuE9mcaWa5BY/LghTouNlb5Ixoe1zpUuLoshIq Dl0g==
X-Gm-Message-State: APjAAAWuKt/MXnAgTvFO9SHzxn8hqUjdpf3jNLjXMF1kBoA8b6C1+fYa sM91lsNwDEBkExop4kX2+BJG62BXyW7oN624UuB6uA==
X-Google-Smtp-Source: APXvYqzRjqAzhrCwkYtJeaniaVW2/0yxHwHnrRlo7H4htnTi8C6wr3E/q4oIJIMwPy5oze5f0SK8zneojw8Wl5F2PYQ=
X-Received: by 2002:a19:f107:: with SMTP id p7mr17875344lfh.91.1571767865509; Tue, 22 Oct 2019 11:11:05 -0700 (PDT)
MIME-Version: 1.0
References: <CAChr6Sw3f7du3JYxfcWSZje1zjDzsRBQyDjob-AvzjWeZzKW7g@mail.gmail.com> <CAChr6Sz6xHtFWjOKrLp3sp9MpC-SoU9Sx=vk22ditjShA7B=Kg@mail.gmail.com> <CABcZeBOnE+gyNu7GarAfO0bptoPfzQQ=VKeWLdpJBDM=E4yhzg@mail.gmail.com> <CAChr6SxWE66jPRbnBRtwNSn3L+uNFkoFBbYNOBAkKDN05qotoA@mail.gmail.com> <CABcZeBOy8ogJrmFajxX1pqjqgnE61gE=c3CWz+pp34NWHmGKbw@mail.gmail.com> <03e15760-dfce-cd7b-baea-56ac70d92192@cs.tcd.ie> <CAChr6SzmpSn3Q8tBi+Pdc+Bq7stiukbufbh-jDt+AEtrkV8XGg@mail.gmail.com> <f87c2916-d03d-2715-7b36-7b70fead8df4@cs.tcd.ie> <CAChr6SxfT0ed5J89siGX23A0G77BJQWxFRDoJ1w0v7=5O0KERw@mail.gmail.com> <8063bb12-8462-53fa-fa62-1e5abb1a652e@cs.tcd.ie> <CAHbrMsBPJqzaUSa42gGq45MfsTvCVW7t95q3feWEiSYeSN9ocw@mail.gmail.com> <333fde42-76f9-1af3-0f0f-c70914b0222e@cs.tcd.ie> <CAHbrMsA0PFwvu3hvZgXMbe2Buzq9dQHgNJJLOqtyMUzb-qpc0A@mail.gmail.com> <04a5a50a-3268-d9fb-de16-abb9224409ed@cs.tcd.ie> <CAChr6SySVXsH1J7KGDJjjB=wdxhdaCe207pLn2fGFMmDb1q82w@mail.gmail.com> <BE5E7283-6EF4-4113-ADBA-7790A5DFACD8@akamai.com> <e20daa2c-b239-11e0-87e7-beaebb80aebf@cs.tcd.ie>
In-Reply-To: <e20daa2c-b239-11e0-87e7-beaebb80aebf@cs.tcd.ie>
From: Eric Rescorla <ekr@rtfm.com>
Date: Tue, 22 Oct 2019 11:10:28 -0700
Message-ID: <CABcZeBMHnz7t6QhXVu8BfXmA1Q4RU1x06TOpcyqFY2FZJmenGQ@mail.gmail.com>
To: Stephen Farrell <stephen.farrell@cs.tcd.ie>
Cc: "Salz, Rich" <rsalz@akamai.com>, Rob Sayre <sayrer@gmail.com>, "TLS@ietf.org" <tls@ietf.org>
Content-Type: multipart/alternative; boundary="0000000000004b1fcc059583b92a"
Archived-At: <https://mailarchive.ietf.org/arch/msg/tls/wzSvdFyDqvuBxcqqaOX3zbpSi9Y>
Subject: Re: [TLS] draft-ietf-tls-esni feedback
X-BeenThere: tls@ietf.org
X-Mailman-Version: 2.1.29
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, 22 Oct 2019 18:11:10 -0000

On Tue, Oct 22, 2019 at 10:49 AM Stephen Farrell <stephen.farrell@cs.tcd.ie>;
wrote:

>
>
> On 22/10/2019 17:44, Salz, Rich wrote:
> > I think varying padding to some fixed multiple is a good trade-off.
>
> Me too. I'd go for multiples of 32 octets, with a SHOULD
> to add an extra block or two randomly, but anything of
> that kind should work.
>
> > Apparently the next published draft will say that.
> Hmm.
>
> That *really* ought be communicated to the list by the draft
> authors, and before -05 is submitted.
>

Uh,why? Authors generally have a fair amount of latitude at this stage of
the process, with the understanding that the draft can be reverted.

And I say that as someone who isn't quite sure what the draft in Github
currently says :)

-Ekr


> Cheers,
> S.
>
> _______________________________________________
> TLS mailing list
> TLS@ietf.org
> https://www.ietf.org/mailman/listinfo/tls
>