Research of the anonymous communications algorithm in P2P network
Abstract With the rapid progress of information technologies, computer networks have been widely used in communications among individuals, parties and governments. Concerns on security of network and privacy of communication have been grown. Anonymity needed by many applications on Internet, A research focus which become present of research of anonymous communication. We study the problems of partially connected network traffic camouflage, rerouting path selection in anonymity systems and scalar anonymity. The rerouting path selection is a most popular technology for P2P anonymous communication. It is usually implemented in the Mix mechanism and Onion Routing Protocol. The Mix mechanism has provided a feasible solution for the realization of anonymous communication, but to a certain degree, the attackers can still obtain the correspondence relations through traffic analysis. In order to further improve the ability of Mix mechanism to resist the traffic analysis of message volume, a kind of scheme named group padding is proposed, and based on which, a novel anonymous correspondence mechanism is designed additionally. Compared with the traditional Mix mechanism, the newly proposed Mix mechanism based on group padding scheme can resist traffic analysis of message volume effectively, and needs lower extra bandwidth simultaneously. Finally, utilize NS2 platform to simulate and analysis about a grouped padding Mix mechanism and the Mix network communication based on P2P.
