Level II Challenges (155)
Page 1 of the challenges in
Level II, ordered by date posted (the most recent appear first).
|
|
|
|
This challenge series is about the GRANIT cipher, a method that can be done manually. It has been used for instance by the former GDR spy Günter Guillaume till about 1960.
Part 1, 2 and 3 of this series use the same keyword for generating the key matrix, but different permutation keys. This part has a ciphertext-only challenge and the ciphertext has 80 characters. Read more...
Click here to get to the corresponding forum topic to share your opinion.
Click here to download the challenge.
|
|
Author:
This email address is being protected from spambots. You need JavaScript enabled to view it. |
|
Published on: 2015-07-01 18:23 |
|
Maximum number of attempts for this challenge: 10 |
|
|
All successful users of this challenge
No one solved the challenge right now. Be the first! |
|
|
|
|
|
You must be logged in to solve the challenge |