System and method for audio/video data copy protection

摘要

A system for preventing copying of audio/video (AV) data, including a copy control information inspection unit receiving first copy control information from AV data including an AV content information section having the first copy control information and an AV content section having second copy control information, and transmitting the first copy control information and a control command corresponding to the first copy control information, a key generation unit generating a decryption key using the first copy control information and predetermined information for the decryption key generation, according to the control command, and a decryption unit decrypting the AV data with the use of the decryption key.