Security Research of Mobile Communication System

In this paper,It first analyzes and studies the security architecture of the 3G mobile communication system.It covers the security menaces faced by 3G,the security principles,objectives and requirements.It also analyzes the security features of 3G.Discussion is focused on the authentication and key agreement used in 3G's access network,and the mechanisms adopted for providing data encryption service and dada integrity service.The algorithms and protocols used to implement the above mechanisms are introduced.A study of the standard 3G encryption algorithm-KASUMI is also made in this thesis.Detailed discussion is focused on the principles and structure of KASUMI algorithm.