Re: [TLS] Confirming consensus: TLS1.3->TLS*
"D. J. Bernstein" <djb@cr.yp.to> Fri, 18 November 2016 18:07 UTC
Return-Path: <djb-dsn2-1406711340.7506@cr.yp.to>
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 58D8F12962C for <tls@ietfa.amsl.com>; Fri, 18 Nov 2016 10:07:45 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.199
X-Spam-Level:
X-Spam-Status: No, score=-4.199 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, UNPARSEABLE_RELAY=0.001] autolearn=ham autolearn_force=no
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 sFHyzlWh_BUe for <tls@ietfa.amsl.com>; Fri, 18 Nov 2016 10:07:43 -0800 (PST)
Received: from calvin.win.tue.nl (calvin.win.tue.nl [131.155.70.11]) by ietfa.amsl.com (Postfix) with SMTP id E86471295E3 for <tls@ietf.org>; Fri, 18 Nov 2016 10:07:42 -0800 (PST)
Received: (qmail 30058 invoked by uid 1017); 18 Nov 2016 18:07:40 -0000
Received: from unknown (unknown) by unknown with QMTP; 18 Nov 2016 18:07:40 -0000
Received: (qmail 16476 invoked by uid 1000); 18 Nov 2016 18:07:37 -0000
Date: Fri, 18 Nov 2016 18:07:37 -0000
Message-ID: <20161118180737.16475.qmail@cr.yp.to>
Mail-Followup-To: tls@ietf.org
From: "D. J. Bernstein" <djb@cr.yp.to>
To: tls@ietf.org
In-Reply-To: <CF83FAD0-B337-4F9E-A80B-2BAA6826BF41@sn3rd.com>
Archived-At: <https://mailarchive.ietf.org/arch/msg/tls/mtDahYPp8IkxFMDJMaJsRaJSLh4>
Subject: Re: [TLS] Confirming consensus: TLS1.3->TLS*
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, 18 Nov 2016 18:07:45 -0000
The largest number of users have the least amount of information, and they see version numbers as part of various user interfaces. It's clear how they will be inclined to guess 3>1.3>1.2>1.1>1.0 (very bad) but 4>3>1.2>1.1>1.0 (eliminating the problem as soon as 4 is supported). We've all heard anecdotes of 3>1.2>1.1>1.0 disasters. Even if this type of disaster happens to only 1% of site administrators, it strikes me as more important for security than any of the arguments that have been given for "TLS 1.3". So I would prefer "TLS 4". Yes, sure, we can try to educate people that TLS>SSL (but then we're fighting against tons of TLS=SSL messaging), or educate them to use server-testing tools (so that they can fix the problem afterwards---but I wonder whether anyone has analyzed the damage caused by running SSLv3 for a little while before switching the same keys to a newer protocol), and hope that this education fights against 3>1.3 more effectively than it fought against 3>1.2. But it's better to switch to a less error-prone interface that doesn't require additional education in the first place. ---Dan
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Joseph Birr-Pixton
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Yoav Nir
- [TLS] Confirming consensus: TLS1.3->TLS* Sean Turner
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Erik Nygren
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Nick Harper
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Tony Arcieri
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Viktor Dukhovni
- Re: [TLS] Confirming consensus: TLS1.3->TLS* David Benjamin
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Dave Garrett
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Martin Thomson
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Peter Gutmann
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Ilari Liusvaara
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Hubert Kario
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Viktor Dukhovni
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Salz, Rich
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Peter Gutmann
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Eric Mill
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Ilari Liusvaara
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Michael Ströder
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Will Serumgard
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Adam Langley
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Henrick Hellström
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Ira McDonald
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Christian Huitema
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Dave Kern
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Martin Rex
- Re: [TLS] Confirming consensus: TLS1.3->TLS* D. J. Bernstein
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Vlad Krasnov
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Deb Cooley
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Salz, Rich
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Vlad Krasnov
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Salz, Rich
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Eftychios Theodorakis
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Vlad Krasnov
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Julien ÉLIE
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Martin Thomson
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Salz, Rich
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Eric Mill
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Nick Sullivan
- Re: [TLS] Confirming consensus: TLS1.3->TLS* David Adrian
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Kazuho Oku
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Peter Gutmann
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Peter Gutmann
- Re: [TLS] Confirming consensus: TLS1.3->TLS* David Woodhouse
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Melinda Shore
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Ilari Liusvaara
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Victor Vasiliev
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Anders Rundgren
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Jeffrey Walton
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Viktor Dukhovni
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Peter Gutmann
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Peter Gutmann
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Watson Ladd
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Ira McDonald
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Judson Wilson
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Vlad Krasnov
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Steven Valdez
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Filippo Valsorda
- Re: [TLS] Confirming consensus: TLS1.3->TLS* D. J. Bernstein
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Eric Rescorla
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Eric Mill
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Bill Frantz
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Xiaoyin Liu
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Mark Nottingham
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Viktor Dukhovni
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Peter Gutmann
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Andrey Jivsov
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Andrei Popov
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Salz, Rich
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Dmitry Belyavsky
- Re: [TLS] Confirming consensus: TLS1.3->TLS* darin.pettis
- Re: [TLS] Confirming consensus: TLS1.3->TLS* =JeffH
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Salz, Rich
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Yoav Nir
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Eric Rescorla
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Short, Todd
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Sean Leonard
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Richard Barnes
- Re: [TLS] Confirming consensus: TLS1.3->TLS* David Woodhouse
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Salz, Rich
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Hugo Krawczyk
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Scott Schmit
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Daniel Migault
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Dave Garrett
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Anders Rundgren
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Dan Brown
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Timothy Jackson
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Raja ashok
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Nick Sullivan
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Peter Gutmann
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Viktor Dukhovni
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Tony Arcieri
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Watson Ladd
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Peter Gutmann
- Re: [TLS] Confirming consensus: TLS1.3->TLS* David Benjamin
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Salz, Rich
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Salz, Rich
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Bill Frantz
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Stephen Farrell
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Peter Gutmann
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Yoav Nir
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Peter Gutmann
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Matt Caswell
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Hubert Kario
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Salz, Rich
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Ted Lemon
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Salz, Rich
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Hubert Kario
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Salz, Rich
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Peter Gutmann
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Hubert Kario
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Ackermann, Michael
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Hubert Kario
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Thomas Pornin
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Ted Lemon
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Maarten Bodewes
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Daniel Kahn Gillmor
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Salz, Rich
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Rob Stradling
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Hubert Kario
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Andrei Popov
- Re: [TLS] Confirming consensus: TLS1.3->TLS* David Benjamin
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Yoav Nir
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Andrei Popov
- Re: [TLS] Confirming consensus: TLS1.3->TLS* darin.pettis
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Viktor Dukhovni
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Ackermann, Michael
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Salz, Rich
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Salz, Rich
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Aaron Zauner
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Michael D'Errico
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Patrick McManus
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Peter Gutmann
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Ted Lemon
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Peter Gutmann
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Peter Gutmann
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Tony Arcieri
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Tony Arcieri
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Viktor Dukhovni
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Scott Schmit
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Scott Schmit
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Tony Arcieri
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Karthik Bhargavan
- [TLS] closing thread -> Re: Confirming consensus:… Sean Turner
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Peter Gutmann
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Mohan Sekar
- Re: [TLS] Confirming consensus: TLS1.3->TLS* Joseph Salowey