Cryptographic apparatus and method for electronic rights management of storage media

摘要

An electronic appliance (52; 62) is disclosed, the appliance comprising a disk drive (80; 80') configured to read protected information from a removable storage medium (100), an input (88) for receiving user requests, a protected processing environment (164) communicatively coupled to the disk drive, the protected processing environment being configured to: (a) access control information from the storage medium, the control information specifying one or more permitted or prohibited uses of the protected information; (b) apply the control information to govern access to or other use of the protected information; (c) use one or more decryption keys stored within the protected processing environment to decrypt one or more encrypted content decryption keys; and (d) use the one or more content decryption keys to decrypt the protected information, and an output (90; 160) for presenting the protected information to a user.