Re: [TLS] Working Group Last Call for draft-ietf-tls-downgrade-scsv-00

"Salz, Rich" <rsalz@akamai.com> Thu, 16 October 2014 13:57 UTC

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From: "Salz, Rich" <rsalz@akamai.com>
To: Florian Weimer <fweimer@redhat.com>, Bodo Moeller <bmoeller@acm.org>
Date: Thu, 16 Oct 2014 09:57:02 -0400
Thread-Topic: [TLS] Working Group Last Call for draft-ietf-tls-downgrade-scsv-00
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Subject: Re: [TLS] Working Group Last Call for draft-ietf-tls-downgrade-scsv-00
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> Should the client continue to retry with lower TLS versions once it receives an
> inappropriate_fallback alert?

Sure, if it likes  being told no over and over again. :)

> Should it retry without the SCSV?  I guess you mean "no way!", but this is
> only implicit.

I disagree with Bodo.  It's a user-agent issue. A browser might pop up a warning about the loss of privacy features and ask if it should proceed.

--  
Principal Security Engineer, Akamai Technologies
IM: rsalz@jabber.me Twitter: RichSalz