Re: [TLS] padding bug

Adam Langley <> Fri, 20 September 2013 16:27 UTC

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From: Adam Langley <>
Date: Fri, 20 Sep 2013 12:27:22 -0400
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To: Eric Rescorla <>
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Subject: Re: [TLS] padding bug
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On Fri, Sep 20, 2013 at 11:52 AM, Eric Rescorla <> wrote:
> This looks like "meh" to me:

I think that "meh" is probably a reasonable summary of my post, yes.

If we accept that making any change costs about the same, because the
cost overwhelmingly consists of the amount of time that we have to
wait for deployment, then I'd very much like a better change than
warming up CBC's corpse again.

There is one case where this might not be the case however: an Acme
TLS stack that is basically unmaintained but might be able to hack in
an extension like this. Although I can certainly believe that
something like that exists, nothing is coming to mind but I find cases
of ten year old copies of OpenSSL pretty often.

So I've no objection to this ID, but nor am I esp excited by it.