Re: [TLS] no fallbacks please [was: Downgrade protection, fallbacks, and server time]

Ilari Liusvaara <ilariliusvaara@welho.com> Fri, 03 June 2016 08:34 UTC

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Date: Fri, 3 Jun 2016 11:33:54 +0300
From: Ilari Liusvaara <ilariliusvaara@welho.com>
To: tls@ietf.org
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Subject: Re: [TLS] no fallbacks please [was: Downgrade protection, fallbacks, and server time]
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On Fri, Jun 03, 2016 at 08:37:34AM +0200, Nikos Mavrogiannopoulos wrote:

> A simpler proposal is:
> Consider TLS 1.3 as a feature, and negotiate it using an empty
> extension. If the extension is present a server assumes TLS 1.3.

Well, AFAIK, in current editor's draft, key_share or pre_shared_key
is always present and none are meaningful in TLS.1.2.


-Ilari