Secure Framework of Audiovisual Content based on Bi-directional Authentication for Hard Disk Drive

We have developed content protection technologies best suitable for hard disk drives. Besides large capacity and high speed, the hard disk drive has some better features than optical discs, one of which is intelligent enough to make bi-directional authentication to the system. This benefit realizes more flexible and reliable protection of digital content. This paper describes the total framework of the developed protection mechanism, focusing on audiovisual content which is used in a wide range of applications.