The Design Of CAS Is Based On Android

The Android system is operating system of smartphone popularly, because of good performance, the open source code, the phone open Alliance (OHA) support, when borned, it is sought after by businesses and developers. Widely used in mobile phones, TVs, set-top boxes, large medical equipment in their research and analysis, it is significanful to research on it.CAS (Conditional Access System) is a general term for a method of encryption systems, it can be achieved through this system, network control, charges, encryption, and many other features, are widely used in video on demand, electronic banking, online supermarket, distance education and other environmentalits safety performance are higher, in line with China’s financial security trading standards.The first chapter compares the advantages and disadvantages of four popular smart phone operating systems, and finally introducing the paper work.The second chapter of the system to learn the android system architecture, common components of the Android system, compare the underlying linux standard linux difference, integrated its inside in SQLite, that OPENGL library use, the framework layer software, communications,service, the layout process.The third chapter of the android system underlying the development and application development processes, structures NDK and SDK development environment, to pave the way for post-transplant CAS system.The fourth chapter is the core work of chapters of the thesis, first introduced the smart card communication protocols, on-chip operating system and the organizational structure of the internal file system, the PSI specifications for digital programming TV, as well as CA in the set-top box deal with the CW (Control key,dynamic key), the detailed process of the final design of a new CAS system software architecture.Chapter CAS system core modules of the transplant in the android system, and designed a simple CAS system management software. Huawei H3716C platform program descrambling and CA management functions.Chapter VI of the paper summarizes the in-depth research and proposed future paper.Ⅰ...