关键词: 信息隐藏, 匿名通信, 重路由

Abstract: The rerouting-based anonymous communication system adopts the rerouting mechanism to protect the anonymity of communication participant. Based on the model of rerouting-based anonymous communication system, a rerouting mechanism, which applies a proportion-descending probability, is proposed and analyzed in this paper. Theoretical analysis and the calculation result demonstrate that the descending forward probability ensures the degree of anonymity availability, makes the expected value of rerouting path decrease distinctly, therefore limits the communication delay. But the degree of anonymity will decrease with the number of rebuilding rerouting-path increases.

Key words: information hiding, anonymous communication, rerouting