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With the rapid development of Internet technology , especially the development of distributed network , a strong impetus to the sale of digital goods industry and dissemination of these figures without any quality products can damage the case easily be copied and redistributed , and making the Internet became illegal use and dissemination of digital content users hotbed . At this stage, we can not completely pass laws to solve these problems, so DRM technology (Digital Rights Management, Digital Rights Management technology ) came into being, it is from a technical level, the protection of digital products , digital products through encryption , plus watermarks and other treatment, limit the user of these products , users only pay for a product through the right to use , effective protection of the legitimate rights and interests of digital products . Distributed network -based video and audio files DRM protection system , mainly used in servers, and associated with it in the video embedded client resource distribution , download. DRM system is mainly based on hybrid P2P (Peer-to-Peer, peer to peer or peer ) technology model design , and its main function is divided into three parts: the content server designed primarily for video file encryption , video files, use 3DES algorithm is fully encrypted ; license server designed primarily for video key management and distribution , the license server receives user registration, and based on the user registration information and payments to legitimate users distributing video playback license ; embedded customers end Mplayer player function design, including user registration, apply for permits to play protected video files and other functions. Finally , the DRM system for the implementation of the three functional modules to analyze the safety and optimize its function , the system has better applicability .
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