Re: [TLS] padding bug

"Blumenthal, Uri - 0558 - MITLL" <uri@ll.mit.edu> Tue, 24 September 2013 16:40 UTC

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From: "Blumenthal, Uri - 0558 - MITLL" <uri@ll.mit.edu>
To: Hovav Shacham <hovav@cs.ucsd.edu>
Date: Tue, 24 Sep 2013 12:40:30 -0400
Thread-Topic: [TLS] padding bug
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Cc: "tls@ietf.org" <tls@ietf.org>
Subject: Re: [TLS] padding bug
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On Sep 24, 2013, at 12:31 , Hovav Shacham <hovav@cs.ucsd.edu> wrote:

> Peter Gutmann <pgut001 at cs.auckland.ac.nz> writes:
> It seems to be accepted by everyone except the WG chairs
> 
> I'm not thrilled with making changes to a fundamental part of the TLS design through an extension.  TLS is too complicated to analyze already; this doesn't help.
> 
> I would prefer an approach that deprecates existing suites in favor of non-CBC authenticated encryption modes.

I concur. Deprecate old, and require authenticated encryption.