Secured distribution of a digital cinema package (dcp)

A client-side content delivery device comprising:

• one or more computer processors;
• and
• one or more computer-readable mediums storing instructions that, when executed by the one or more computer processors, cause the client-side content delivery device to perform operations comprising:
• receiving, by a client-side content delivery device, an at least partially encrypted digital cinema package (DCP) for a digital movie, the at least partially encrypted DCP received from a digital content delivery system that is remote to the client-side content delivery device, the encrypted DCP including a first persistent unique digital watermark antecedently applied to the at least partially encrypted DCP by the digital content delivery system;
• receiving from the digital content delivery system, a first public key antecedently transmitted to the digital content delivery system by a first display device paired to the client-side content delivery device, the first public key corresponding with the first display device;
• receiving, by the client-side content delivery device, an at least partially encrypted first Key Delivery Message (KDM) corresponding with the at least partially encrypted DCP and the first display device paired to the client-side content delivery device, the at least partially encrypted first KDM including a content encryption key (CEK) and at least one playback timing parameter of the digital movie, the at least partially encrypted first KDM encrypted with a first public key corresponding with the first display device;
• decrypting, by the client-side content delivery device, the at least partially encrypted first KDM using a first private key corresponding to and stored on the first display device;
• decrypting, by the client-side content delivery device, the at least partially encrypted DCP using the CEK of the decrypted first KDM;
• and
• using the decrypted DCP to cause presentation of the digital movie based on the at least one playback timing parameter of the digital movie by the first display device paired to the client-side content delivery device.

A non-transitory computer-readable medium storing instructions that, when executed by one or more computer processors of a client-side content delivery device, cause the client-side content delivery device to perform operations comprising:

• receiving, by a client-side content delivery device, an at least partially encrypted digital cinema package (DCP) for a digital movie, the at least partially encrypted DCP received from a digital content delivery system that is remote to the client-side content delivery device, the at least partially encrypted DCP including a first persistent unique digital watermark antecedently applied to the at least partially encrypted DCP by the digital content delivery system;
• receiving from the digital content delivery system, a first public key antecedently transmitted to the digital content delivery system by a first display device paired to the client-side content delivery device, the first public key corresponding with the first display device;
• receiving, by the client-side content delivery device, an at least partially encrypted first Key Delivery Message (KDM) corresponding with the at least partially encrypted DCP and the first display device paired to the client-side content delivery device, the at least partially encrypted first KDM including a content encryption key (CEK) and at least one playback timing parameter of the digital movie, the at least partially encrypted first KDM encrypted with a first public key corresponding with the first display device;
• decrypting, by the client-side content delivery device, the encrypted first KDM using a first private key corresponding to and stored on the first display device;
• decrypting, by the client-side content delivery device, the at least partially encrypted DCP using the CEK of the decrypted first KDM;
• and
• using the decrypted DCP to cause presentation of the digital movie based on the at least one playback timing parameter of the digital movie by the first display device paired to the client-side content delivery device.

A method comprising:

• receiving, by a client-side digital content delivery device, a digital cinema package (DCP), including at least one encrypted essence file, for a digital movie, the DCP received from a digital content delivery system that is remote to the client-side digital content delivery device, the DCP including a first persistent unique digital watermark antecedently applied to the DCP by the digital content delivery system;
• receiving from the digital content delivery system, a first public key antecedently transmitted to the digital content delivery system by a first display device paired to the client-side digital content delivery device, the first public key corresponding with the first display device;
• receiving, by the client-side digital content delivery device, a first Key Delivery Message (KDM), including at least one encrypted component, the first KDM corresponding with the DCP and the first display device paired to the client-side content delivery device, the first KDM including a content encryption key (CEK) and at least one playback timing parameter of the digital movie, the first KDM encrypted with a first public key corresponding with the first display device;
• decrypting, by the client-side digital content delivery device, the at least one encrypted component included in the first KDM using a first private key corresponding to and stored on the first display device;
• decrypting, by the client-side digital content delivery device, the at least one encrypted essence file included in the DCP using the CEK of the decrypted first KDM;
• and
• using the decrypted DCP to cause presentation of the digital movie based on the at least one playback timing parameter of the digital movie by the first display device paired to the client-side digital content delivery device.