Patent ID: 8572380

Claim:
A streaming system comprising: stream distribution means for packetizing, based on packetizing control information received from an external authoring device, both previously encrypted contents data, encrypted by the authoring device and including encoded picture data and/or speech data, and non-encrypted encoding information, received from the external authoring device and specifying a type of encoding used to encode said picture data and/or speech data, such that each packet in a resulting packetized data includes a non-encrypted header corresponding to the non-encrypted encoding information and a non-encrypted crypto-header, and for distributing the resulting packetized data as a stream; and stream receiving means for receiving said packetized data from said stream distribution means, re-assembling the received packetized data based on the non-encrypted encoding information and decrypting the encrypted contents data of the re-assembled packetized data to generate the contents data by decrypting each packet individually using packet specific information included in the respective crypto-header.