62 lines
2.8 KiB
Plaintext
62 lines
2.8 KiB
Plaintext
-----BEGIN PGP SIGNED MESSAGE-----
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Hash: SHA256
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Powers of Tau Ceremony Operational Writeup
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==========================================
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Round: 77
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Date: 2018-03-11
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Contributor: Lucas E Morales
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Location: Cambridge MA, USA
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Challenge (blake2b): 137a1c2a9aecb46b0ae8a286241fe42ea47dbcb09c2d679b7d59ba308e12c831e173e4ce3d14352db8c94ab90342cd68de34aeefdd8294037de0bd862ed43905
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Response (blake2b): ab0c2fbd794ab26d249617cdbfd145f0a6be9c5dc9da46d8ead2b427e694d12c8f0fd6013fdc3806c538bc7f60d7240b603d92aa117f6461479fc04358c60cb3
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Procedure and Details:
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Compiled[1] both the rust[2] and go[3] implementations, and ran both on the
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same challenge file. One of the resulting responses was selected in a random
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manner such that I cannot know which was chosen. Additional entropy was
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gathered by randomly picking words/phrases from books on my shelf, recording
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outdoor audio, and aggregating readings of /dev/random from three machines.
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Compute node was a 2007 Macbook Pro (x86_64 Intel Core 2 Duo) with the primary
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intention of predating the Intel ME. It was running a Parabola GNU/Linux-libre
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live image[4], and air-gapped and placed in a Faraday cage. The compute
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binaries, the challenge, and ultimately the response were transferred via flash
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drive. The machine will probably never be used again.
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Response hash also posted on Mastodon: https://mastodon.mit.edu/@lucasem/99669377294120258
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PGP public key: https://lucasem.com/pgp
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[1]: Compilation was not done on the compute node.
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rustc 1.26.0-nightly (2789b067d 2018-03-06)
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cargo 0.26.0-nightly (1d6dfea44 2018-01-26)
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go 1.9.2
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gcc 7.3.0 (for the RELIC toolkit)
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[2]: ebfull/powersoftau d47a1d3d1f007063cbcc35f1ab902601a8b3bd91
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compute binary (sha1) 686555685607879206d5253b527978921c3e7173
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[3]: FiloSottile/powersoftau e2af113817477d26e6155f1aae478d3cb58d62c5
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compute binary (sha1) 242fc0d7e69f4112483a5ce43ba78bb64b434f31
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[4]: parabola-systemd-cli-dual-complete-2017.10.17-21.39-alpha.iso
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(sha1) b2d01aa3f399ae59db5a44cffdbb6acd7bc30212
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