MFOC is an open source implementation of "offline nested" attack by Nethemba.
Later was added so called "hardnested" attack by Carlo Meijer and Roel Verdult.

This program allow to recover authentication keys from MIFARE Classic card.

Please note MFOC is able to recover keys from target only if it have a known
key: default one (hardcoded in MFOC) or custom one (user provided using command
line).
