Patent ID: 7945047

Claim:
A digital video system comprising: a digital data input port adapted to receive encoded digital media data and an encrypted first cryptographic key; a digital signal decoder coupled with the digital data input port, the digital signal decoder being adapted to: receive the encoded digital media data; decode the encoded digital media data; and receive the encrypted first cryptographic key; a control bus coupled with the digital signal decoder, the control bus being adapted to receive the encrypted first cryptographic key from the digital signal decoder; a controller coupled with the control bus, the controller being adapted to manage data traffic on the control bus; a cryptographic key decryptor coupled with the control bus; the cryptographic key decryptor being adapted to: receive the encrypted first cryptographic key from the digital signal decoder via the control bus; and decrypt the encrypted first cryptographic key; and a data encryptor coupled with the digital signal decoder and the cryptographic key decryptor, the data encryptor being adapted to: receive the decoded digital media data; receive the first decrypted cryptographic key; and encrypt the decoded digital media data using the first decrypted cryptographic key.