Device to selectively protect a reproduction of a disk, method of selectively protecting reproduction of the disk, and recording medium for the method

摘要

A device to protect a reproduction of a disk, a method of protecting the reproduction of the disk, and a recording medium for the method. The device includes a key setting unit to generate a key to encode lead-in region information of the disk desired to be reproduced and a key storing unit to store the key. A key storing unit in the device stores the key generated by the key setting unit, and a reproduction determining unit determines whether to reproduce the disk using the key.