DIGITAL VIDEO RECORDER EMPLOYING UNIQUE ID

摘要

The present invention may be regarded as a digital video recorder (1) comprising a storage device (3) for storing an encrypted video program (7), a unique ID (4) for interlocking the encrypted video program (7) with the digital video recorder (1), and a cryptography facility. The cryptography facility comprises an encoder (24), responsive to the unique ID, for encrypting a plaintext video program into the encrypted video program (7) stored on the storage device (3), and a decoder (26), responsive to the unique ID (4), for decrypting the encrypted video program (7) stored on the storage device (3) into the plaintext video program during playback.