Curious if you saved your compute binary?

On Mon, Nov 27, 2017 at 9:32 PM Neal Conner via zapps-wg
<zapps...@lists.z.cash.foundation> wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> Powers of Tau Operational Write-up
> ==================================
>
> Round: 18
> Date: 2017-11-25
> Name: Neal Jayu
> Location: Boston, Massachusetts, New England
>
> Hashes
> ======
>
> challenge:
> c2d62e5fdff19023554f21d19b86490470ac9a2860094d10397c666f9c6fc652
>
> response (blake2b & sha256):
>     ef15cb99 7c331928 855dd7ce 42ade214
>     3033be18 5be45f3e eac5b95b b12777db
>     582992b0 a862c92a 1cba4e95 044c52f5
>     de857776 31462a0d c51d7a4f 846b9d7e
> 122efac62a11da143dca24e5facd33cf61ff2597e65aa4ff09aae89fe838c045
>
> powersoftau-master.zip:
>
> 3a6db71b0bb9d39c3f58f2d51388560ab92b139d5066eb9b66c30580262309d7147289fb598926a5d99779935b30411b075504b2ebd0488335c6e9df5bf80e00
>
> rust-1.22.1-x86_64-unknown-linux-gnu.tar.gz:
>
> 0fd3776a7fd38cbcbffe8a257836f9f5c0d04762af3107b93b8860b98b6d92b0912b4668c973d9f647a7a74b4855a5680cab042c3389c6158efee1b4640a60de
>
> debian-9.2.1-amd64-DVD-1.iso:
>
> b7afe686f36f9e26ac0888ca341572d2bf1fbe70c50acb6af822cf9e04318e5a3f974ebdfd91e1706758f0f2aa1a332462f3d74ecdaf69f0061849ac595e67df
>
> Procedure
> =========
>
> After downloading the aforementioned files to my daily Linux machine, I
> checked each's sha256/512 sum against published values, or in the case
> of the Rust standalone, recorded its sha512 sum and verified its
> signature file against the project's PGP key from Keybase.
>
> I burnt the Powers of Tau zip, Rust standalone installer, Debian ISO,
> and Memtest86+ to DVD/CDs; and copied the challenge file to a SanDisk
> USB drive.
>
> On the compute node (see Side Channel Defences below), I booted from the
> Debian DVD, installed it to a Samsung USB drive, then booted the machine
> from the USB drive.
>
> Rust and Powers of Tau were copied from CD. Both sums were re-checked on
> the compute node. build-essential was installed from the Debian DVD.
>
> I connected Ethernet to run `cargo run --release --bin new` in order to
> download and configure dependencies. Ethernet was removed once complete,
> and the resulting challenge file deleted.
>
> The provided challenge file was copied over and computation began. As
> input, I used the results of two minutes of 20-sided dice rolls,
> followed by arbitrarily selected words from a book extolling the virtues
> of laissez-faire capitalism.
>
> One complete, a hash of the response file was taken, copied to the
> SanDisk USB drive, then uploaded to the AWS bucket via my daily machine.
>
> Side Channel Defences & Postprocessing
> ======================================
>
> The compute node was a disused 7-year-old Lenovo Thinkpad T420 borrowed
> from a friend without foreknowledge of my intentions for it.
>
> I removed the hard drive prior to booting the laptop. Although I did not
> have permission to remove its radio devices, I activated its hardware
> switch which purportedly disabled them.
>
> Further, during the installation of the Debian instance onto the Samsung
> USB drive, I declined to install drivers for the machine's wireless
> devices.
>
> The computation was performed within living quarters with no particular
> precautions taken save for watching Voyager at formidable volume and
> inaudibly typing the entropy sources.
>
> After copying the response file and Blake hash to the SanDisk USB drive,
> I powered off the laptop and booted into the Memtest86+ CD. I allowed
> Memtest to run for two full cycles (about 1.5 hours) then powered off.
>
> I removed power and battery from the machine and intend to leave it
> powered off for the foreseable future.
>
> Archival
> ========
>
> The Debian installation media, Powers of Tau repo, Rust toolchain, and
> Memtest are on DVD/CDs which I've autographed.
>
> The Samsung USB drive containing the Debian instance, and SanDisk USB
> drive with challenge and response files (and their hashes), are both
> LUKS-encrypted. As such, I don't expect these to be tampered with
> following the operation.
>
> I've sealed all five of the above media in a signed and sealed envelope,
> which I've locked in a safe to which I alone posses the keys. They are
> available to audit upon request.
> -----BEGIN PGP SIGNATURE-----
>
> iQIxBAEBCAAbBQJaHPG6FBxuZWFsamF5dUBrZXliYXNlLmlvAAoJEEakC/1Nia+r
> iBwP/RQi1HIiuDoGKq5Dqv8fNr/eGUztUM/x4le3bgennM0vAomIgRuqoEZz1ng0
> JYG+jelUVzx3mSbnSnq68J3t2Nn/BEYyPGUacw1+Vp0pfJOPLQSDIwk9fXQ6tiqJ
> 862XXvSHdUzmcvw1+bRXqkDm+uHuMWja6DNfznle7u+1WAPU51Cef6efh5xpA0Mk
> wBUx9eOkxNvTrUZuyfdclfn2ZoMAlPwN+Xtw1aS4LtT6bsxR4Vpm+GFk/l5gQHyX
> 8E4mcHfRp5V2Lis3bOTdUegbp7ZjRHjL/VaZeRjW3nqslzFk6cP2gp3rzylJNyID
> guKt8hhGE92t/RXmAdkyn41mmHuao9dVus8ocdAtzRG49wqDQXcfBlj+3hUuGtJP
> v2cj7qlW4JXdGWQZTBLOTfegGIt+juBWBgszGqmrVeVFQ6A0EBDliND7hl4nk5R/
> FMCGr1CBcZmLiNvgKbKf1H4w5dyGWwBszrnZJSuIGUZLcaPDKO8xouvB4Nk3exGC
> 2d/bYYpEq/P4DBiKfKnVPacxfeJTRWg32aZF4Z0D05UNW/SJ/sdUDvzyZ0LU/kdR
> eZlm1wNLQjSapu+HcMnttdaGmY0FCDeIL8Ev6zUSfmjaKvRehsiw6jfjCNFY4BWq
> UBZW7LgcU73KKO7e17JsL8g8pbS3XYpE7Vhzg16pjKqNHVRy
> =0af3
> -----END PGP SIGNATURE-----
>
>
> El 25/11/17 a las 15:54, Sean Bowe escribió:
> > You're next! :)
> >
> > Sean
> >
> > On Sat, Nov 25, 2017 at 1:50 PM, Neal Conner via zapps-wg
> > <zapps...@lists.z.cash.foundation> wrote:
> >> Hello,
> >>
> >> Please consider this my request to join the MPC ceremony.
> >>
> >> I've made the necessary preparations and can compute within 24 hours of
> >> receiving the challenge file, including today if a slot is available.
> >>
> >> Thanks,
> >>
> >> Neal Conner
> >> https://keybase.io/nealjayu
> >>
> >>
>
>

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