[zapps-wg] Powers of Tau Attestation

Bastien Teinturier bastien at stratumn.com
Mon Jan 22 03:59:02 EST 2018


It's a good point, and I was wondering why this "manual input" entropy is
needed.
I don't understand what it adds to the entropy implicitly grabbed from the
system by the executable.
If we assume that an adversary is able to monitor the system and replicate
the entropy of the random generator used in the code, that adversary is
probably able to grab the input to the process as well right?
I'm interested in learning more about why you felt it was necessary to ask
the user to provide some random input.

Cheers,
Bastien

On Sat, Jan 20, 2018 at 2:04 PM, Daira Hopwood via zapps-wg <
zapps-wg at lists.z.cash.foundation> wrote:

> On 18/01/18 13:46, Bastien Teinturier via zapps-wg wrote:
> > Powers of Tau Attestation
>
> Notice that PowersOfTau_2.jpg leaks the additional entropy provided
> to the computation. That's ok, it uses operating system entropy as
> well; just noting that future participants might want to avoid that.
>
> --
> Daira Hopwood  ⚧Ⓐ
>
>


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Bastien Teinturier

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