[zapps-wg] Powers of Tau

[Lucas Vogelsang]

Thanks for publishing the go implementation. Awesome to have another
implementation to choose from. I will take a look at your repository.

@Sean, I'd love to participate anytime next week. I'm available every
mon-fri 9am-2pm EST.

On Wed, Jan 24, 2018 at 5:46 PM, Andrew Miller via zapps-wg <
zapps-wg at lists.z.cash.foundation> wrote:

> 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
>