Kryha - Challenges

Introduction

You can test your understanding of the Kryha and its cryptanalysis by trying to solve my challenges.

I have created two sets of challenges, one for each version of the machine.

Note: The standard wheel is used for the first five problems.

1 – You know the entire key. This problem allows you to test your simulator or your understanding of how to use the machine itself.
2 – You know almost the entire key. You don't know the starting sector or the initial position of the inner wheel.
3 – The key is unknown, only the beginning of the message.
4 – You have a ciphertext and its plaintext translation. You must decrypt another ciphertext using the same key.
5 – We know nothing, but the standard wheel is used.
6 – We know nothing, including the wheel used.
7 – We have several in-depth cryptograms.

1 – You know the entire key. This problem allowed you to test your simulator or your understanding of how to use the machine itself.
2 – Part of the key is provided: the location of the holes and the passphrase used to generate the internal alphabet.
3 – We only know the position of the holes.
4 – We know the number of sectors and the beginning of the message.
5 – Same, but the beginning of the message is very short.
6 – We know the beginning of the message.
7 – We have in-depth messages.
8 – We have a very short cryptogram and a probable word.
9 – We know nothing about the key, but the cryptogram is long.