Design And Implementation Of Multimedia Content Copyright Protection System On Android Platform

With the rapid development of mobile network terminal, people’s daily lives have more colorful experience. Today, the mobile terminal has become an indispensable part of everyone’s life. In addition to providing the function of the basic communication and so on, the rich applications of the mobile terminal and the content of multimedia, make people’s life colorful. Meanwhile, the widespread use of mobile terminals, but also bring the copyright protection of the content of multimedia a serious challenge.Traditional copyright protection takes simple encryption method to protect digital media. This approach does not achieve all aspects of digital content protection. Currently general copyright protection program, is a way through utilization of a variety of information security technology, to make an integrated protection system.Firstly, this paper makes a simple introduction of the current popularity of information security technology, analyzing the respective advantages and limitations of encryption and decryption technology, digital watermarking technology, digital signature technology, digital abstract, WPKI mechanism, and describes the main purpose of various techniques. Then treat OMA DRM copyright protection system as an in-depth analysis, and explore OMA DRM copyright protection system of copyright protection mechanism, to make an in-depth study of the merits and flaws of the system. Through in-depth analysis and research, based on OMA DRM2.0, not only was the Android platform multimedia content copyright protection system proposed, but also the main structure of the system, functional design, system processes and so on were designed in detail. Develop the DRM controller、format of DRM content and the consist of right object.This article contains the following aspects of the work:(1) Make a research and analysis of the current major information security technology, to make clear the application value of a variety of techniques in the system of copyright protection. Through in-depth analysis of the current copyright protection systems, a new copyright protection system is proposed based on OMA DRM2.0, and the main structure of the system, functional design, system processes were designed in detail, and then complete the construction of the whole system.(2) Analyze the description language of copyright, which is compared with current popular right description language. Make analysis of the RO object encapsulation format. Design the DRM agent client privilege controllers in detail. Through DRM agent controller, according to RO objects obtained from the client, the access to DRM content is controlled, in order to protect content security.(3) Make security analysis of multimedia content on the proposed copyright protection system in this article, and point out that the system’s security mechanisms, then analyze the deficiencies in the design of system. Finally, propose appropriate solutions, to provide support for future system upgrades.