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Level II Challenges (143)

Page 1 of the challenges in Level II, ordered by date posted (the most recent appear first).

Holographic Encryption — Part 2

[pavillon-02] - 3 users already solved this challenge.

Holographic encryption can be performed by employing encryption masks which alter the field before propagation. This makes the image
unrecognizable when recorded. You are given three holograms that represent the cipher image and three plain images and their holograms which were encrypted with the same encryption masks.

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Published on: 2017-04-07 22:29
Maximum number of attempts for this challenge: 15

All successful users of this challenge

Rank User (#3) Achieved points (Global score) y-m-d - h:m:s

Viktor (Veselovský) 1613 (166147) 2017-04-12 18:46:17
Armin Krauss (argh) 1444 (196814) 2017-04-20 17:54:38
Eugene (lim0n) 1120 (115186) 2019-11-16 13:49:41
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   +++    [16:06 - 14.07.2020] cypherz78 solved the Level I challenge 'Number Sequence — Part 3'    +++    [10:02 - 14.07.2020] cypherz78 solved the Level I challenge 'Number Sequence — Part 2'    +++    [09:43 - 14.07.2020] cypherz78 solved the Level I challenge 'Number Sequence'    +++    [01:00 - 14.07.2020] Glorfindel solved the Level II challenge 'Letter to the Templars — Part 3'    +++    [16:19 - 13.07.2020] vexilla72 solved the Level III challenge 'RSA Factoring Challenge: RSA-250'    +++