Research And Design Of Multimedia Copyright Protection System For Smart Device

Under the current mobile Internet environment,the widespread use of smartphones,the increase of mobile Internet data transmission rate,the flexibility of mobile multimedia applications without limitation of location and the richness of content have greatly promoted the development of mobile multimedia application technologies.Because of the flexibility of mobile Internet and the convenience of multimedia digital content distribution,it is very difficult to guarantee the legitimate rights and interests of the author of multimedia content.Therefore,the research on copyright protection technology under mobile Internet has certain theoretical and commercial value.This paper firstly introduces the OMA DRM standard of mobile digital copyright protection,then some kinds of key technology of digital copyright protection were introduced,it includes content encryption technology,identity authentication technology,access control technology,licensing technology,then the mobile multimedia streaming media technology is described.Based on the introduction and research of standards and technology of copyright protection for the mobile intelligent terminal,this paper designs copyright protection system needs analysis,and then designedthe overall design of copyright protection system,finally completes the implemention of the detailed design and system functions of multimedia copyright protection system for mobile intelligent terminal.The multimedia copyright protection system for mobile intelligent terminal of this paper bases on OMA DRM standard and uses the HLS technology which is one of streaming media technologies.This system implements the content encryption,decryption package play of multimedia,and puts forward the authorization mechanism that is uses token authentication.When a user downloads index file of multimedia,he will get a token after the verification.When he gets every stream file,must carrying this token,and will get the decryption key.The mechanism of using token authentication,can effectively prevent the illegal users thefting multimedia.Then,the paper carries out the function test of the copyright protection system,and analyzes the test results,which are in line with the requirements defined by the system.At last,the work contents of this subject are summarized,and the improvement of this copyright protection system is also proposed.