MysteryTwister C3
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Level II Challenges (96)

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

Spirale — Part 1

[allard-01] - 3 users already solved this challenge, 2 are working on it.
 
 
 

Spirale is a OTP cipher designed to be simple to implement by hand. It is resilient to errors as they have only a local effect without obscuring all the ciphertext.
Part 1 is a partly-known plaintext challenge with a 314-letter ciphertext. The first 75 letters of the plaintext are known.
Part 2 of this series uses the same four keys as this one.
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Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2015-08-23 19:04
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

S Combes (jerva) 1378 (77932) 2015-09-12 21:12:42
J-L Morel (Rossignol) 1143 (23146) 2017-01-19 15:14:20
george lasry (george4096) 1129 (281491) 2017-08-21 20:56:27
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   +++    [18:15 - 22.08.2017] D3d4lu5 solved the Level II challenge 'ASAC — A Strong(er) ADFGVX Cipher — Part 1'    +++    [18:13 - 22.08.2017] D3d4lu5 solved the Level II challenge 'Double Column Transposition — Part 3'    +++    [18:11 - 22.08.2017] D3d4lu5 solved the Level II challenge 'Double Column Transposition — Part 2'    +++    [14:21 - 22.08.2017] Anonymous_Guy solved the Level I challenge 'Number Sequence'    +++    [09:08 - 22.08.2017] nurnicu solved the Level I challenge 'Original Caesar Cipher'    +++