Hebern cipher machine (with only one rotor)
===========================================

The 1st Problem
-----------------
This problem is not difficult.... Except that it is necessary 
to create a simulator of the Hebern machine (paper or computer). 
To achieve this goal, one must have read carefully the text 
accompanying the problem.

The 2nd problem
-----------
The rotor position and the cipher mode are unknown.  
You can try all message keys.