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See oskarth_attestation.md in this directory for Oskar Thorén's signed attestation.

Hash of the challenge file for verification:

    daa7c3b5 570966a7 1180db03 c0d76def
    00395cb6 95c90736 d9c7c240 8bc76b33
    bda8ee88 f495b77d 1927a94d 37e67726
    89e7cb8a 1796c863 5c1153fc 6d6b6f42

response was based on the hash:

    daa7c3b5 570966a7 1180db03 c0d76def
    00395cb6 95c90736 d9c7c240 8bc76b33
    bda8ee88 f495b77d 1927a94d 37e67726
    89e7cb8a 1796c863 5c1153fc 6d6b6f42

Hash of the response file for verification:

    cd052845 3b0cca20 3956bb23 333473be
    c12c14a8 cb7102ef e437f8d4 07f23463
    6e77e1e7 d44c4176 608ad290 a2d83f48
    78ccb222 c1e7c60b f5a8ab38 542ce634

Blake2b hash of the new_challenge file for participant #34:

    5e4226c9 b037c98d 6207ee8f 8056c651
    d3686215 74dcf7ac 67cf6908 43dc8072
    4f8c8f62 7d3a0e33 4d82934e 24d17e89
    300c767f 91c03ca2 13742e0d 25c6ac09

The above new_challenge file: https://ppot.blob.core.windows.net/public/challenge_0034

Oskar Thorén's attestation:

Attestation to response 0033

Date: Fri Apr 24 2020 - Sat Apr 25 2020 Name: Oskar Thoren (oskarth) Location: Taipei, Taiwan Device: Personal Lenovo Carbon X1 with Fedora 29 Commit Hash: bf852c168676a7afc5dd17b47ff9b8f394aeab8a Challenge URL: https://ppothk.blob.core.windows.net/public/challenge\_0033

Challenge:

`challenge` file contains decompressed points and has a hash:
	daa7c3b5 570966a7 1180db03 c0d76def
	00395cb6 95c90736 d9c7c240 8bc76b33
	bda8ee88 f495b77d 1927a94d 37e67726
	89e7cb8a 1796c863 5c1153fc 6d6b6f42
`challenge` file claims (!!! Must not be blindly trusted) that it was based on the original contribution with a hash:
	527fe68c 16219d86 018de364 fc5701b1
	44fc5b68 eb063c9a 8c4e8405 b35f4561
	b55363df 6d9adf82 8792c7b1 92a595b4
	4aadbea7 cdef918a 11bfe65a 89c9e4a3
Computing and writing your contribution, this could take a while...

Response:

The BLAKE2b hash of `./response` is:
	cd052845 3b0cca20 3956bb23 333473be
	c12c14a8 cb7102ef e437f8d4 07f23463
	6e77e1e7 d44c4176 608ad290 a2d83f48
	78ccb222 c1e7c60b f5a8ab38 542ce634

Time taken:

Not recorded.

Entropy Sources:

Side channel defenses:

No specific precautions taken, but performed in isolated home office.

Postprocessing:

Rebooting the machine.