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Re: [TLS] Resumption Contexts and 0-RTT Finished

Benjamin Kaduk <bkaduk@akamai.com> Wed, 20 July 2016 15:16 UTC

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To: Hugo Krawczyk <hugo@ee.technion.ac.il>
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From: Benjamin Kaduk <bkaduk@akamai.com>
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Date: Wed, 20 Jul 2016 10:16:53 -0500
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Cc: "tls@ietf.org" <tls@ietf.org>
Subject: Re: [TLS] Resumption Contexts and 0-RTT Finished
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On 07/20/2016 12:42 AM, Hugo Krawczyk wrote:
>
> Actually, I would suggest that for any such value, we add "collision
> resistance" to the label for that derivation - this would apply to
> resumption/PSK context and to Exporter key (and possibly others)
>

Seems reasonable; space in the label is relatively cheap.

-Ben

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