REINFORCEMENT FOR CONTINUITY OF STREAM

摘要

PROBLEM TO BE SOLVED: To provide a system and a method for protecting a digital multimedia stream from unauthorized editing. SOLUTION: The system for reinforcing continuity of a data stream includes a server connected to a transmission link for supplying the data stream to at least one client by the transmission link. The data stream is segmented into plural units. The server includes a scrambler for ciphering at least one first unit, by using a ciphering key and an information concealing unit for deciding the ciphering key and embedding the ciphering key in at least one second unit for data stream, that the client requires information for concealing information, in order to cipher and decode the data stream.