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Re: [TLS] Security review of TLS1.3 0-RTT

Nico Williams <nico@cryptonector.com> Tue, 02 May 2017 23:05 UTC

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Date: Tue, 02 May 2017 18:02:59 -0500
From: Nico Williams <nico@cryptonector.com>
To: Eric Rescorla <ekr@rtfm.com>
Cc: Daniel Kahn Gillmor <dkg@fifthhorseman.net>, TLS WG <tls@ietf.org>
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Subject: Re: [TLS] Security review of TLS1.3 0-RTT
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On Tue, May 02, 2017 at 03:53:48PM -0700, Eric Rescorla wrote:
> It's not XOR. It's addition mod 2^32. That's important because the
> *difference*
> between the ticket replay times is directly observable anyway.

Computationally there's no real difference between that and XOR.

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