69 lines
2.1 KiB
Plaintext
69 lines
2.1 KiB
Plaintext
-----BEGIN PGP SIGNED MESSAGE-----
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Hash: SHA256
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Powers of Tau Operational Writeup
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=================================
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Round: 70
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Date: 2018-03-06
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Name: Zcash FR Team
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Location: Paris, FR
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Preparation steps
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=================
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Zcash FR Team is currently compose of 3 members. Each member brings is own computer prepared by himself. We did not talk to each other which preparation was made neither which software or version was installed.
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Sidechannel Defences
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====================
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The computing process was done in the flat of a Zcash FR Team member. In this flat there was the 3 members of Zcash FR Team and nobody else.
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Computing was done offline.
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Procedure
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=========
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We start with 3 computers ready to compute. For convenience reason we needed to use 1 computer so we took 1 computer at random and get it off the computing process.
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Then we downloaded the challenge file on the 2 computers selected to participate.
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The text entered to provide additional entropy was different on the 2 computers.
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It was composed of :
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- - - Random type
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- - - Name of Zcash FR Team members
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- - - Information display on TV channel
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- - - Play card picked randomly
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After the response file was generated on both computer we decided to play a video game to decide which response file will be send. The winner send is own response file.
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The BLAKE2b hash of `./response` is:
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9298f7b3 31daa220 55c31fae 4564ca59
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33e0a1ce 6861c92d 33d755bc 4a68756d
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6b1c6f78 7a2c4a1a 53681f2b b4026ece
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350bb618 d8a9f847 2b18ddc2 ce117865
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Postprocessing
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==============
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Nothing special, the computer was turn off.
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- ---
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Zcash FR Team
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Unofficial Zcash French community
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https://zcashfr.io
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-----BEGIN PGP SIGNATURE-----
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q/Y+egf/cDrDG3dckRVVzTitbRSDAjHUsDf07QgE8icPWWThmbF8G35cecgKgCWu
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l8Eo2RNL6ZEa/9NKWiPnUNIqTGBVFg==
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=Q4qU
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-----END PGP SIGNATURE-----
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