MysteryTwister C3
NUMBER OF ACTIVE MEMBERS:

11064
Follow us: Facebook Twitter
 



Level II Challenges (158)

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

Weakened ElsieFour — Part 1

[rotthaler-07] - 4 users already solved this challenge.
 
 
 

The challenges for the weakened ElsieFour serve as an exercise and use an intentionally weakened version of LC4. ElsieFour combines ideas of modern RC4 stream cipher, historical Playfair cipher and plaintext-dependent keystreams. It can be computed manually. Part 1 is a partly-known key challenge which provides the first 12 characters of the key.
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: 2018-04-28 16:29
Maximum number of attempts for this challenge: 15

All successful users of this challenge

Rank User (#4) Achieved points (Global score) y-m-d - h:m:s

George (Theofanidis) 1200 (123216) 2018-10-06 20:53:41
Michael Möller (michaelm) 1176 (253196) 2019-01-02 09:55:59
D3d4lu5 (D3d4lu5) 1138 (363488) 2019-11-28 19:27:00
Eugene (lim0n) 1115 (178540) 2021-05-10 19:34:04
You must be logged in to solve the challenge
Pages [1] 1 Show All  
 
 
powered by the CrypTool project  CrypTool

 

   +++    [11:11 - 24.06.2021] bestwishes solved the Level I challenge 'Number Sequence — Part 6'    +++    [11:01 - 24.06.2021] E01814058 solved the Level II challenge 'Alice's Birthday Party (Part 1)'    +++    [10:57 - 24.06.2021] E01814058 solved the Level II challenge 'Heartbleed — Part 3'    +++    [10:56 - 24.06.2021] bestwishes solved the Level I challenge 'Find the right route — Part 1'    +++    [10:54 - 24.06.2021] smf12 solved the Level I challenge 'Find the right route — Part 1'    +++