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Re: Packet number encryption

Mikkel Fahnøe Jørgensen <mikkelfj@gmail.com> Fri, 09 February 2018 14:09 UTC

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From: Mikkel Fahnøe Jørgensen <mikkelfj@gmail.com>
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Date: Fri, 09 Feb 2018 09:09:35 -0500
Message-ID: <CAN1APdd0offGRXaTcdBTjo-+tj4O29zn1W9qJW-KcEnQD5qkoQ@mail.gmail.com>
Subject: Re: Packet number encryption
To: Eric Rescorla <ekr@rtfm.com>
Cc: Praveen Balasubramanian <pravb@microsoft.com>, Mike Bishop <mbishop@evequefou.be>, "quic@ietf.org" <quic@ietf.org>, huitema <huitema@huitema.net>
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As far as I know, this is just NIST's judgement of how low a risk of
nonce-reuse has to be in order to be safe. To the best of my knowledge,
there's still no safe level of actual reuse. For that you'd need something
like AES-GCM-SIV.


OK, but as I also pointed out in another recent mail, correcting myself,
IETF requires unique nonces in TLS, so the point is mood.

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