This protection has been introduced in October 98 with the release of the game MediEvil , the protection uses a Digital ID which is stored in the SubChannel , it consists in a 16Bit key. Like SafeDisc protection, Libcrypt have have evolved in the time and there are currently 4 versions of LIBCRYPT called LC-1 , LC-2 , LC-3 ,LC-4: this one is in fact based on LC-3 scheme but includes extra routines and several ".exe" file , it makes the debugging work harder for the cracker, but for CloneCD: it is as easy as previous Libcrypt protections since this protection is always stored in the SubChannel Data and CloneCD copies everything it can find :-)

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