Patent ID: 7702925

Claim:
A device configured for use in a personal digital network, said device including: a lockbox circuitry; and an egress hardware configured to decrypt controlled content using key data obtained from the lockbox circuitry for decrypting the controlled content, thereby generating a plaintext version of the content, and to output at least one of the plaintext version of the content and a processed version of said plaintext version of the content, wherein the lockbox circuitry and the egress hardware are included in a secure subsystem of the personal digital network, the device is configured to include a rights data indicating that the device is authorized to decrypt the controlled content, a license certificate data indicating the device is licensed to become an authorized element of the personal digital network, and a marriage certificate data indicating that the device is an authorized element of the personal digital network, the lockbox circuitry is configured to perform an exchange with an external lockbox circuitry in which said lockbox circuitry obtains, from the external lockbox circuitry, the key data for decrypting the controlled content and the rights data indicating that the device is authorized to decrypt the controlled content, and the personal digital network is configured such that neither the decrypted controlled content, nor any key data for use in decryption of data used by the egress hardware, is present in plaintext form within the personal digital network except within the secure subsystem of the personal digital network.