Motion picture distribution system and related method

A method for distributing secure digital motion picture data for cinema use, comprising:

• generating, by at least one computer, encrypted digital motion picture data from digital audio-video content by encrypting the digital motion picture data using a fixed key and encrypting the fixed key using a public key of a public/private key pair;
• generating, by the at least one computer, multiple scrambled segments of encrypted digital motion picture data by segmenting the encrypted digital motion picture data into segments each comprising a compressed file containing a section of the encrypted digital motion picture and then scrambling each of the segments using a first key distinct from the fixed key and from the public key;
• authenticating, by the at least one computer, a remote client by transmitting the first key via a first communication channel to a particular network address;
• transmitting the multiple scrambled segments of encrypted digital motion picture data by the at least one computer to the remote client via a second communication channel distinct from the first communication channel, in response to successfully authenticating the remote client;
• and
• placing, by the at least one computer, a private key of the public/private key pair in a smartcard readable by the remote client.