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Level II Challenges (95)

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

ASAC — A Strong(er) ADFGVX Cipher — Part 2

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This series consists of 5 challenges based on each other. It introduces a new three-step cipher called ASAC, which is a modified version of ADFGVX. Part 2 uses only the first two steps of the cipher.
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Published on: 2016-07-09 19:08
Maximum number of attempts for this challenge: 15

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   +++    [14:09 - 23.06.2017] D3d4lu5 solved the Level II challenge 'Brute-Force-Attack on Triple-DES with Reduced Key Space'    +++    [07:55 - 23.06.2017] TheLion solved the Level I challenge 'Number Sequence — Part 2'    +++    [07:43 - 23.06.2017] TheLion solved the Level I challenge 'Original Caesar Cipher'    +++    [06:34 - 23.06.2017] TheLion solved the Level I challenge 'Number Sequence'    +++    [23:03 - 22.06.2017] george4096 solved the Level II challenge 'CMEA 1'    +++