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AssigneeRovi Solutions Corporation
InventorsPaul C. Kocher, Joshua M. Jaffe, Benjamin C. Jun, Carter C. Laren, Peter K. Pearson, Nathaniel J. Lawson
Estimating the term…
Technologies are disclosed to transfer responsibility and control over security from player makers to content authors by enabling integration of security logic and content. An exemplary optical disc carries an encrypted digital video title combined with data processing operations that implement the title's security policies and decryption processes. Player devices include a processing environment (e.g., a real-time virtual machine), which plays content by interpreting its processing operations. Players also provide procedure calls to enable content code to load data from media, perform network communications, determine playback environment configurations, access secure nonvolatile storage, submit data to CODECs for output, and/or perform cryptographic operations. Content can insert forensic watermarks in decoded output for tracing pirate copies. If pirates compromise a player or title, future content can be mastered with security features that, for example, block the attack, revoke pirated media, or use native code to correct player vulnerabilities.
A method of distributing audiovisual content intended for secure playback, comprising:
An apparatus comprising program logic stored on machine-readable media, said program logic adapted for distribution in connection with audiovisual content that had been at least in part degraded in quality, said program logic adapted to:
A method for verifying the integrity of encrypted audiovisual content on an optical medium, comprising:
Dependencies are inferred from the claim text.