Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1.1"

Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com> Thu, 02 May 2019 17:06 UTC

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From: Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com>
Date: Thu, 2 May 2019 13:06:09 -0400
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To: mrex@sap.com
Cc: Martin Thomson <mt@lowentropy.net>, "<tls@ietf.org>" <tls@ietf.org>
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Subject: Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1.1"
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Hello Martin,

On Tue, Apr 30, 2019 at 7:50 PM Martin Rex <mrex@sap.com> wrote:

> Martin Thomson <mt@lowentropy.net> wrote:
> > On Sat, Apr 27, 2019, at 07:29, Viktor Dukhovni wrote:
> >> The sound-bite version is: first raise the ceiling, *then* the floor.
> >
> > Yep.  We've done the ceiling bit twice now.
> > Once in 2008 when we published TLS 1.2 and then in 2018
> > with the publication of TLS 1.3.  I'd say we're overdue for the floor
> bit.
>
> Just that this rationale is a blatant lie.
>
> It is formally provable that from the three protocol versions:
>
>  TLSv1.0, TLSv1.1, TLSv1.2
>
> the weakest one is TLSv1.2, because of the royally stupid downgrade
> in the strength of digitally signed.
>
>
> Disabling TLSv1.0 will only result in lots of interop failures
> and pain, but no improvement in security.
>
>
I believe this is the last outstanding comment, pending a reference. Thank
you for your review and contribution.

Best regards,
Kathleen

>
> -Martin
>
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>


-- 

Best regards,
Kathleen