83 lines
3.0 KiB
Plaintext
83 lines
3.0 KiB
Plaintext
-----BEGIN PGP SIGNED MESSAGE-----
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Hash: SHA512
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Powers of Tau Participation Writeup
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===================================
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Date: 2017-11-23
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Name: Adam Nagel
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Location: South Florida, USA
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Ceremony Software
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=================
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powersoftau repository commit
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9e1553c437183540392a7231d0788318a19b18a3
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cargo 0.24.0-nightly (abd137ad1 2017-11-12)
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BLAKE2b hashes
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==============
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Challenge file
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e15f7392ebe912c2f9419f4b4ed4242b6207bad916d22ffb10a0c9c08445ae6f0eebd35c7e52ecd5ff611bb8c8d6bedd9e711cd8485b88d6e2b0d276ee979bb7
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The BLAKE2b hash of `./response` is:
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cdb09d81 858da53b 5581c25d 805e442b
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5a37bf75 ccb1e1b3 104d9886 742c2dae
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220cc817 9902653e 1783ba13 f47d5367
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8360ba3f 7f3d1557 e1472b07 1b796fc5
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/usr/local/bin/cargo
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a5adde35def05d778b9490ba8813f5085ec9a55e88f0fe7c42282508a43774625c2fd84f01383ff3478d345fe8dd1a455096380d37bcf51f4424924c2bf3c07d
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./target/release/compute
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88b2a3d5b8740ff699d6e9ba516d3dcebbcc36c5df64eeeb529ecda8f792de032fad915fbb23168bba8c65a02ff3695176fd1321413b1a6247082137f5f9334d
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./target/release/compute (with --features=u128-support)
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dae100bbdbd9fd6c1280422906ae6fd0dc9c7115d75749c0df01ad8f106924ede534f5ffcdd61255e15d383dd0384d2efe90afc9f2fc27e745996714ec8b20b0
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Procedure
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=========
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I prepared a 2013 Macbook Pro with cargo, powersoftau, and FileVault on
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November 15 at my home in Nashville, disabled the radios, and left it
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powered off until today.
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My turn came up while vacationing in Florida and traveling in a rented car.
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This morning, I sat down in the first coffee shop I encountered and used a
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second laptop to download the challenge file to a USB stick. Then I copied
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the challenge file to my compute machine.
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Entropy was generated with about 30 seconds of key-mashing. I allowed it to
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run while driving around Homestead and Florida City, leaving the Bluetooth
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and Wifi radios disabled. When the process completed, I made a copy of the
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response file.
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I then performed another computation from Long Pine Key Campground in
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Everglades National Park, with entropy generated using the same process.
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A coin flip determined which response file to use. The winner was
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transferred to USB stick and uploaded to S3 over Verizon 4G LTE from the
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campground.
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In an effort to overwrite the RAM and run out the battery, I started two
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instances of `cargo test`. Add in the South Florida heat, and the fans have
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never worked so hard. I intend to leave this computer off for several
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weeks, re-format its hard drive, and use it for other purposes in the
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future.
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Thanks to Sean for coordinating everything, and thanks to the community for
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the chance to participate.
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-----BEGIN PGP SIGNATURE-----
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Version: Keybase OpenPGP v2.0.76
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Comment: https://keybase.io/crypto
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wsBcBAABCgAGBQJaF197AAoJEH9HRRD/y1TBjDEIANpIrKw9QFDJM2vyvpPEGVui
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0mhEStbFX6DZlLcOTzwhGvaitiBlZWFLus3F4aQocXvLwdAtKenVpd5jDKrMHre0
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rcsHewVrgVigvvUeHqTmNMMDx5yvJdKG8MbeNeJSxLge6omHMBydQWot6ytQNnRk
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L9+Nq8h436GCu4ypFiNxgiAKsJF/RFTAe+W2rHECjGqsVpMIuczWwOupeYyncSOS
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JTQ4dLi1VFIsgOzDJI7GeGU8OKlfb4gxtW1YpZlgoFD4KyUQTah0qXyDcTn/eqw0
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iwB1Tg6pJSl/4CBLGshK9gKcw4+2FwnYmW/S3c3+DPUcKSiaSSfbBEiTw3N23zs=
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=qUCa
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-----END PGP SIGNATURE-----
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