Research On RSA-based Public-Key Cryptography Algorithm In The Mobile Communication Network

With the rapid development of Computer Science and the popularization of Internet, the applications of computer network have come into lots of fields in human society. 3G is a high-speech broad-band Mobile Communication System based on QOS. Its network, which realized online-media, mobile TV, and other stream media, has satisfied the need of huge flux of data operation. However, Due to the characteristics of openness and mass transmissibility of the wireless communication's aerial network, data in the wireless transmission route is prone to be monitored.In this Thesis, by analyzing the degree of data security and security requirements, the stability of the security and other important parameters, the author advances: with the constant system security degree, the user's satisfaction shifts with the user's security requirements which leads the fluctuation of the system security degree. The author discusses the influence of the symmetrical public-key and elliptic curvilinear private-key on the security of the mobile communication, and further advanced a self-adapting algorithm for the degree of the security based on the RSA public-key Cryptography. This algorithm could choose corresponding system security degree according to different user's security requirement and could build up the mobile communication net into a safe controllable system in order to poise the fluctuation of the complexity and security needs.The Thesis validates the characteristics of high gradient pulse in mobile communication security and the feasibility of the algorithm which is controlled by one parameter by a series of computer emulation experiments.