Reliable Anonymous Communication Based On Network Coding In A Wireless Environment

As the wireless network coverage scope expands unceasingly, the wireless network has become a necessary part of people’s daily life. However, the personal privacy involved in the process of wireless communication and the reliability and security of information have attracted attention gradually. The corresponding communication technology research has become one of the hot spot of research at home and abroad.At present, there are four technologies of anonymous communication, which are re-routing, encryption, packages filling, broadcast and multicast. The proxy mechanism, Mix and Crowds are mechanisms to implement anonymous communication. Network coding proves to be a good idea of solving the problem of anonymous communication.The thesis deeply analyzes the existing anonymous communication scheme for the privacy protection issues for wireless environment, and focuses on the existing wireless anonymous communication scheme. Combining with the study of security network coding theory, the thesis proposes the anonymous communication scheme which is based on coding confusion. Further the scheme is applied to the wireless network environment, then design reliable network coding in wireless environment anonymous communication model.(1) Considering the situation that the existing communication mechanism can’t completely adapt to the wireless network environment, the thesis puts forward an anonymous mechanism based on the idea of coding confusion after studying the theory and application of the network coding. The view of multiple coding confusion and multipath transmission is applied in the mechanism to achieve the confidentiality and anonymity during the communication process. Combining with the idea of the information redundancy, a new algorithm of coding confusion is put forward, which ensures the confidentiality and anonymity of the information.(2) On the basis of the anonymous communication model of coding confusion and the theory of LT code, we propose a reliable anonymous network coding strategy. Besides, the concept of robust soliton distribution is introduced in the strategy in order to achieve the anonymity and reliability of the model, as well as the controllability of the decode probability of the destination node.