MysteryTwister C3
NUMBER OF ACTIVE MEMBERS:

9975
Follow us: Facebook Twitter

Server maintenance from November 29 to December 2, 2019

MysteryTwister C3 will be offline due to maintenance work starting on Friday November 29, 2019 at 9:00 AM UTC.
 



Level II Challenges (134)

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

Handycipher — Part 10

[kallick-25] - 1 user already solved this challenge.
 
 
 

Handycipher is a low-tech stream cipher, simple enough to permit pen-and-paper encrypting and decrypting of messages, while providing a significantly high level of security. Handycipher was first published in 2014 and further improved in 2015 and 2016. Part 10 of the Handycipher series presents the same challenge as Part 9 but with a different key choice. It is a ciphertext-only challenge.
Read more...

Click here to get to the corresponding forum topic to share your opinion.
Click here to download the challenge.
Click here to download the additional file of the challenge.

Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2019-06-25 17:10
Maximum number of attempts for this challenge: 15

All successful users of this challenge

Rank User (#1) Achieved points (Global score) y-m-d - h:m:s

D3d4lu5 (D3d4lu5) 2000 (297709) 2019-06-26 12:28:07
You must be logged in to solve the challenge
Pages [1] 1 Show All  
 
 
powered by the CrypTool project  CrypTool

 

   +++    [19:44 - 15.11.2019] Miles solved the Level I challenge 'Classical Ciphers^3'    +++    [08:02 - 15.11.2019] SirAbacus solved the Level I challenge 'Number Sequence — Part 4'    +++    [21:04 - 14.11.2019] snk solved the Level II challenge '"The Road" — Part 1'    +++    [15:43 - 14.11.2019] Bart13 solved the Level II challenge 'Cipher ID'    +++    [15:17 - 14.11.2019] phihhim solved the Level I challenge 'Affine Codes / Modulo Arithmetic with N / Extended Euclid'    +++