Method and apparatus for content protection in a personal digital network environment

摘要: In some embodiments, the invention is a personal digital network (“PDN”) including hardware (sometimes referred to as Ingress circuitry) configured transcrypt encrypted content that enters PDN. Typically, transcryption (decryption followed by re-encryption) performed in within circuitry and re-encryption occurs before decrypted accessible or software external circuitry. transcrypted leaves remains re-encrypted form PDN whenever it transferred between integrated circuits otherwise easily software, until Egress for display playback output from implemented so no secret (for use transfer unencrypted firmware any entity Other aspects of are methods protecting (e.g., an open computing system) devices multimedia graphics cards, set top boxes, video processors)