[zapps-wg] Powers of Tau

[Andrew Miller]

That's outstanding, thanks! The independent Go-language implementation of
the compute node is an amazing bonus contribution. I'd love to learn more
about this project. I'll ask questions in the github repo.
Cheers,

On Wed, Jan 24, 2018 at 6:54 PM, Filippo Valsorda via zapps-wg <
zapps-wg at lists.z.cash.foundation> wrote:

> The BLAKE2b hash of `./response` is:
>         7b55c0f5 68a8b4df 2ca14085 2e816df2
>         b9a2dafe 50b2c5e2 5e6c9b6a df239de0
>         223a9866 aba481a8 436fbd42 04a2c48a
>         43725d94 2de47b23 c10c5e87 38fd6467
>
> The main feature of this contribution is that it was computed with an
> independent implementation of Powers of Tau.
>
> My implementation, which I am open sourcing now at [1], was not public at
> the
> time of computation. It is written in Go, shares no code with the main Rust
> implementation, and uses the RELIC library for BLS12-381. The only detail
> that
> was copied verbatim from the Rust codebase is the value of the curve
> coefficient, but that's being resolved at [2]. The Zcash Company sponsored
> this effort, but it was proposed and conducted by me independently.
>
> The computation was simply performed on my main MacBook Pro, where the code
> was developed. The laptop was rebooted after the computation and before
> re-enabling Wi-Fi and reopening the browser. The git hash of the codebase
> was
> 26a0231c674ec6043ef77997d33d94787c55634a, the Go version 1.9.2, extra
> entropy
> was fed to /dev/random before starting.
>
> The full terminal transcript, and this attestation signed with a
> minisign/signify
> key published at [3] are attached, and available at [4].
>
> [1] https://github.com/FiloSottile/powersoftau
> [2] https://github.com/relic-toolkit/relic/issues/64
> [3] https://twitter.com/FiloSottile/status/956325095013863425
> [4] https://gist.github.com/FiloSottile/cc142b683666ee1ce5ee77759bd0a367
>
> -- Filippo Valsorda
>
> 2018-01-22 22:17 GMT+0100 Filippo Valsorda <filippo at ml.filippo.io>:
> > _o/
> >
> > I'm ready to go whenever there's a slot.
> >
> > It will probably take me half a day, upload included.
>



-- 
Andrew Miller
University of Illinois at Urbana-Champaign