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

Nikos Mavrogiannopoulos <nmav@redhat.com> Thu, 02 June 2016 07:31 UTC

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From: Nikos Mavrogiannopoulos <nmav@redhat.com>
To: Eric Rescorla <ekr@rtfm.com>, David Benjamin <davidben@chromium.org>
Date: Thu, 02 Jun 2016 09:31:31 +0200
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Subject: [TLS] no fallbacks please [was: Downgrade protection, fallbacks, and server time]
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On Wed, 2016-06-01 at 15:43 -0700, Eric Rescorla wrote:
> 2% is actually pretty good, but I agree that we're going to need
> fallback.

Please not. Lets let these fallbacks die. Not every client is a
browser. TLS 1.3 must be a protocol which doesn't require hacks to
operate. CBC was removed, lets do the same for insecure fallbacks.