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Re: [TLS] PQC key exchange sizes

Martin Thomson <mt@lowentropy.net> Tue, 26 July 2022 15:57 UTC

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Date: Tue, 26 Jul 2022 11:57:12 -0400
From: Martin Thomson <mt@lowentropy.net>
To: "Blumenthal, Uri - 0553 - MITLL" <uri@ll.mit.edu>
Cc: "tls@ietf.org" <tls@ietf.org>
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Subject: Re: [TLS] PQC key exchange sizes
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On Tue, Jul 26, 2022, at 11:42, Blumenthal, Uri - 0553 - MITLL wrote:
> What are the implications for environments that require NIST Sec Level 3 or 5?

Poor performance.  By which I mean increased exposure to packet loss and additional round trips.  For instance, in QUIC servers might be forced to use Retry, which adds a round trip.

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