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Re: [Ntp] Antwort: Re: Antwort: Why Roughtime?

Ben Laurie <benl@google.com> Tue, 19 December 2023 10:34 UTC

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From: Ben Laurie <benl@google.com>
Date: Tue, 19 Dec 2023 10:34:01 +0000
Message-ID: <CABrd9STLvqi_Odxpg97U5pDYCDwSEGPtbzX+nH1_N_6QH9P6jQ@mail.gmail.com>
To: Hal Murray <halmurray@sonic.net>
Cc: Daniel Franke <dfoxfranke@gmail.com>, ntp@ietf.org
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Subject: Re: [Ntp] Antwort: Re: Antwort: Why Roughtime?
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On Tue, 19 Dec 2023 at 08:31, Hal Murray <halmurray@sonic.net> wrote:

>
> dfoxfranke@gmail.com said:
> > Signing it during NTS-KE doesn't change that fact that it's a symmetric
> key,
> > which means the client controls it too and could use it to forge
> malfeasance
> > proofs.
>
> Thanks.
>
> Back to the drawing boards.  :)
>

Even if it were asymmetric, signing would only help if the time were out of
kilter enough to be clearly wrong when the evidence is presented. I could
niggle about the durability of such evidence, too...


>
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