With the development of Multimedia Technology and Wireless Broadband Network, uers’ demand of enjoying a variety of services on mobile devices is increasing, the huge number of mobile devices users has given rise to the coming of the era of Mobile Internet. When searching the Internet by mobile devices is no longer limited to the network speed, mobile reading has become a very common way of reading. However, due to the openness of the network and the simplicity of copying，all kinds of infringement and piracy are rampant．The copyright protection of digital contents is becoming more and more prominent，even has become a very urgent issue in the digital field． Richmedia is one kind of digital works, it is more and more widely used. Since richmedia contains varieties of forms of resource type, the copyright protection of richmedia resources requires many complex methods. In order to make legitimate users enjoy richmedia resources protected conveniently, there needs a showing module to play or show the richmedia resource for the users. At the same time, in order to prevent users from stealing, spreading the richmedia illegally, it is necessary to add a security module to deal with all kinds of potential safety problems. Since security viewer is an essential part of digital copyrights management systems, the research of the technology of richmedia copyright protection is particularly important. This dissertation chooses the Android mobile terminal as the development platform. According to the characteristics of the mobile terminal, we research the technology of license generation, license parse, content encryption, content decryption and content display. Designing the mobile platform copyright protection system which integrates the various techniques described above. Developing a mobile terminal application, can not only meet users’ requirements of reading richmedia resource on mobile terminal, but also provide effective copyright protection for a variety of richmedia resources. The main contributions of this thesis are summarized as follows: 1.Research the copyright protection techniques based on the mobile platform We research the basic techniques of copyright protection, mainly including license generation, license parse, content encryption, content decryption and content display. In the process of content encryption and content decryption, to deal with the problem of the large data of videos, we propose a partial content encryption and content decry...
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