The aim is to decode and encode the classical hint in a geocaching listing. The explanation how it works is standing below each cache details.
It's a classic Caesar cipher: the alphabet is shifted by a certain number from the original. Geocaching uses the ROT13 method, where ROT stands for rotation. In this case the alphabet is shifted by 13 characters, exactly half of the alphabet. The substitution table is the following (character above is replaced by the character below):
Due to the symmetry the table can be reduced to the first half. Characters standing in one column are exchanged.
Operation
Input
Input des Hints, oder das, was mal dazu werden soll
