Re: [zapps-wg] Powers of Tau Attestation 48

[Sean Bowe via zapps-wg]

Awesome job, thank you so much. :)

By the way, the challenge file that Gabe used is located here:
https://powersoftau-transcript.s3-us-west-2.amazonaws.com/challenge.48

I'd be curious to see why Filippo's Go code can't deserialize it.
Maybe a platform specific bug?

Sean

On Thu, Feb 1, 2018 at 3:56 PM, Gabe Ortiz via zapps-wg
 wrote:
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA512
>
> Powers of Tau Attestation by Gabe Ortiz (@signalnine)
> =
>
> Round: 48
> Date: 2018-02-01
> Location: Albuquerque, NM, USA
> Commit version: d47a1d3d1f007063cbcc35f1ab902601a8b3bd91
>
> SHA256 challenge file:
> 35b60456f4d4a17ceefb1acfd0371d7134789319649cfd6bf77aca35d2824950
>
> Blake2b response file:
> The BLAKE2b hash of `./response` is:
> 7c220a51 5804a837 d314eb18 f861198f
> e1bff8e0 f3e4018f 68a6b2c6 8a4bc89b
> 59a80446 52cc2602 4c3f72f9 32730700
> 1bff8df0 429da619 70d6f587 72629732
>
>
> Methodology
> =
>
> The hardware used was a mid-2011 MacBook Air running OS X 10.11.6. WiFi and
> Bluetooth were disabled and the MAC address of the WiFi adapter was blocked
> at my router. I transferred the challenge file via USB drive. I first
> attempted to use Filippo Valsorda’s golang implementation but ran into an
> issue where it was throwing an error, “Failed to read the challenge: point
> is compressed.” So, I ran the standard Rust implementation instead.
> Additional entropy was produced via a USB-connected keyboard. I again
> transferred the response and response hash via a USB drive to my
> network-connected laptop for upload. The MacBook Air and the USB drive used
> to do the compute was then destroyed.
>
> Just for fun, here’s an imgur album of the laptop destruction (yes, we made
> sure to avoid damage to the battery cells):
> https://imgur.com/a/IkG3i
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[zapps-wg] Powers of Tau Attestation 48

[Gabe Ortiz via zapps-wg]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA512

Powers of Tau Attestation by Gabe Ortiz (@signalnine)
=

Round: 48
Date: 2018-02-01
Location: Albuquerque, NM, USA
Commit version: d47a1d3d1f007063cbcc35f1ab902601a8b3bd91

SHA256 challenge file: 
35b60456f4d4a17ceefb1acfd0371d7134789319649cfd6bf77aca35d2824950

Blake2b response file:
The BLAKE2b hash of `./response` is:
7c220a51 5804a837 d314eb18 f861198f
e1bff8e0 f3e4018f 68a6b2c6 8a4bc89b
59a80446 52cc2602 4c3f72f9 32730700
1bff8df0 429da619 70d6f587 72629732

Methodology
=

The hardware used was a mid-2011 MacBook Air running OS X 10.11.6. WiFi and 
Bluetooth were disabled and the MAC address of the WiFi adapter was blocked at 
my router. I transferred the challenge file via USB drive. I first attempted to 
use Filippo Valsorda’s golang implementation but ran into an issue where it was 
throwing an error, “Failed to read the challenge: point is compressed.” So, I 
ran the standard Rust implementation instead. Additional entropy was produced 
via a USB-connected keyboard. I again transferred the response and response 
hash via a USB drive to my network-connected laptop for upload. The MacBook Air 
and the USB drive used to do the compute was then destroyed.

Just for fun, here’s an imgur album of the laptop destruction (yes, we made 
sure to avoid damage to the battery cells):
https://imgur.com/a/IkG3i
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