Add disturbedsquirrel.
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Jason Davies
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# disturbedsquirrel
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* Mailing list post: <https://lists.z.cash.foundation/pipermail/zapps-wg/2018/000263.html>
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Response file:
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* <https://powersoftau-transcript.s3-us-west-2.amazonaws.com/bd44847d072914a83de15761452375328042e25b8484a7f51742c0038e05a2175a1ea4c3f6b50f9b394babda70fff55f1ee30798d8cd55907178f725a1a5ebfb>
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-----END PGP PUBLIC KEY BLOCK-----
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-----BEGIN PGP SIGNED MESSAGE-----
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Hash: SHA512
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#######################################################
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Powers of Tau attestation
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disturbedsquirrel
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##############
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## General sidechannel defenses:
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# Contacted Sean Bowe using Whonix who forwarded my message to Jason Davies.
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# Always communicated using Tor to prevent an adversary from obtaining my geographical location prior to the computation.
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# Computation was done in an empty room in my home's basement. All unnecessary electronic devices were kept outside the ceremony room (including my phone which was additionally wrapped in tinfoil). I was the only person in the house at the time. Necessary Ethernet connections were made via 50 m cable to my server room upstairs. I was in the ceremony room the whole time.
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## Preparation a few days prior to computation day:
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# Purchased a used desktop PC with cash from a stranger and removed the HDD. No Wifi equipment was present at the machine.
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# Drove to a friend of mine and downloaded a fresh Ubuntu 17.04 x64 DVD image via his machine running Linux Mint 17.04 as OS.
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# Verified the image via the hash provided on the Ubuntu homepage and wrote it to a raw DVD.
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# At home I booted up the Powers of Tau computation machine with the Ubuntu live DVD and built the compute binary which was then saved on a newly purchased USB drive. The USB drive was put into a safe.
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## Procedure on computation day:
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# Booted a second machine (notebook) with the Ubuntu live DVD, downloaded and installed Tor Browser and retrieved the challenge file via Tor.
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# Copied the challenge file onto the USB drive which already contained the compute binary.
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# Powered down the notebook and booted the Powers of Tau computation machine with the same Ubuntu live DVD.
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# On computation machine first rust was installed and then Ethernet removed.
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# Plugged in USB drive and started computation via Terminal.
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## Computation ceremony:
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# Entropy was generated by entering a random string in addition to 100 numbers generated by a roulette wheel.
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# Computation took about one and a half hours.
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##############
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The BLAKE2b hash of `./response` is:
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bd44847d 072914a8 3de15761 45237532
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8042e25b 8484a7f5 1742c003 8e05a217
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5a1ea4c3 f6b50f9b 394babda 70fff55f
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1ee30798 d8cd5590 7178f725 a1a5ebfb
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##############
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## Postprocessing:
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# Saved the BLAKE2b hash on the USB drive and powered down the computation machine.
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# Booted notebook again with Ubuntu live DVD, downloaded and installed Tor Browser.
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# Plugged in the USB drive containing the response file.
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# Uploaded response file via Tor to AWS machine.
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# Wrote this report on a second notebook which was used to initially contact Sean Bowe while the response file was uploading on the first notebook which was used in the ceremony.
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# Mailed this report to Jason Davies
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# Nuked the USB drive via DBAN.
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#######################################################
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=B/oI
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-----END PGP SIGNATURE-----
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@ -59,6 +59,7 @@
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55. [Joseph Tobin](./0055/) [[report.asc]](./0055/report.asc) 2ddd4358b124100d724e62a06f158dbcc714ffbe8784f619887a40ff12f9fab044649dfa306a038506f95e0e25c6cfb332f46f57ea6331c8057f46bf5a079db4
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56. [Alok Menghrajani](./0056/) c13af4d4477f66e753f25d511b6c46249f20f79af63c20d8c64e34c9df90441b0bf89ae28c05d71c4ae9cb82e0a3aa4d41e99666c54261a9b0b75f6a5c455436
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57. [Sean Kelly](./0057/) [[report.asc]](./0057/report.asc) 40db756cfdceae765472590bc0dd9ec17fa70475f1cc9ef5fdf99e0d750cd6a2ce010c95b59130c6d8c12eb2c7fe52968858fca9d6ba7bcb67b391cfb1f5401d
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58. [disturbedsquirrel](./0058/) [[report.asc]](./0058/report.asc) bd44847d072914a83de15761452375328042e25b8484a7f51742c0038e05a2175a1ea4c3f6b50f9b394babda70fff55f1ee30798d8cd55907178f725a1a5ebfb
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## License
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