Re: [TLS] consensus on backwards compatibility changes

Nikos Mavrogiannopoulos <nmav@redhat.com> Fri, 13 February 2015 07:48 UTC

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From: Nikos Mavrogiannopoulos <nmav@redhat.com>
To: Dave Garrett <davemgarrett@gmail.com>
Date: Fri, 13 Feb 2015 08:48:44 +0100
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References: <201412300503.03923.davemgarrett@gmail.com> <201502121714.54235.davemgarrett@gmail.com> <54DD6065.8000205@metaparadigm.com> <201502122228.02125.davemgarrett@gmail.com>
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Subject: Re: [TLS] consensus on backwards compatibility changes
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On Thu, 2015-02-12 at 22:28 -0500, Dave Garrett wrote:
> On Thursday, February 12, 2015 09:24:37 pm Michael Clark wrote:
> > * Spec can be explicit that it is NOT RECOMMENDED for TLSv1.3 clients to
> > negotiate SSLv3 { 3, 0 } not to be conflated with the record layer lower
> > bound.
> 
> https://tlswg.github.io/tls13-spec/#rfc.appendix.E.2
> 
> SSL negotiation total prohibition was committed earlier today.
> 
> > * Believe ClientHello { 3, 0 } { 3, 4 } may be more guarded.
> 
> {3,1} is current practice for some clients at the moment.
                               ^^^^
Well said. For some. That is, not all.

regards,
Nikos