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Re: [TLS] The TLS_FALLBACK_SCSV time bomb (was: Re: Working Group Last Call for draft-ietf-tls-downgrade-scsv-00)

Andrei Popov <Andrei.Popov@microsoft.com> Fri, 17 October 2014 21:37 UTC

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From: Andrei Popov <Andrei.Popov@microsoft.com>
To: Martin Thomson <martin.thomson@gmail.com>
Thread-Topic: [TLS] The TLS_FALLBACK_SCSV time bomb (was: Re: Working Group Last Call for draft-ietf-tls-downgrade-scsv-00)
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Date: Fri, 17 Oct 2014 21:37:09 +0000
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Cc: "tls@ietf.org" <tls@ietf.org>
Subject: Re: [TLS] The TLS_FALLBACK_SCSV time bomb (was: Re: Working Group Last Call for draft-ietf-tls-downgrade-scsv-00)
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It's not an RFC yet, so perhaps we should at least consider using a TLS extension. SCSVs are ugly hacks. A simple TLS extension is probably not much harder to implement than an SCSV, and may result in cleaner code.

-----Original Message-----
From: Martin Thomson [mailto:martin.thomson@gmail.com] 
Sent: Friday, October 17, 2014 2:03 PM
To: Andrei Popov
Cc: Bodo Moeller; tls@ietf.org
Subject: Re: [TLS] The TLS_FALLBACK_SCSV time bomb (was: Re: Working Group Last Call for draft-ietf-tls-downgrade-scsv-00)

On 17 October 2014 13:35, Andrei Popov <Andrei.Popov@microsoft.com> wrote:
> Now that SSL's days are counted, why use SCSV (rather than a TLS extension)?

I wasn't going to ask that question now that it's been implemented and deployed, but I do have to wonder if that's not the right thing to do here...

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