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Re: [TLS] Confirmation of Consensus on Removing Compression from TLS 1.3

Peter Gutmann <pgut001@cs.auckland.ac.nz> Fri, 28 March 2014 03:42 UTC

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From: Peter Gutmann <pgut001@cs.auckland.ac.nz>
To: "<tls@ietf.org>" <tls@ietf.org>
Thread-Topic: [TLS] Confirmation of Consensus on Removing Compression from TLS 1.3
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Date: Fri, 28 Mar 2014 03:42:10 +0000
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Subject: Re: [TLS] Confirmation of Consensus on Removing Compression from TLS 1.3
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Yaron Sheffer <yaronf.ietf@gmail.com> writes:

>I think this would be a mistake. I would recommend instead to say that
>compression SHOULD be disabled by default. But leave the option in the
>protocol for applications that need compression and are able to mitigate the
>vulnerability. This does NOT include normal Web traffic.

This isn't going to have the effect you think it will.  Anyone who has a clue
about security will treat it as a MUST NOT.  Anyone who doesn't will say
"cool, it does compression too!" and treat it as a SHOULD or MUST.  The only
only way to fix this problem is to remove it entirely.

Peter.

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