Security enhancement of P2P network based on fault tolerance technology

Abstract

In order to protect the private key of TTP(Trusted Third Party) in P2P network,an algorithm of synthesizing the private key of TTP was presented.Based on the fault tolerance technology,the shares of the private key of TTP were distributed to the synthesized key server and different share cards,and the private key of TTP was synthesized and protected through these shares.Moreover,the modified share cards were found by zero-knowledge proof technology.Then the digital certificates were effectively protected when they were signed by the private key of TTP.A security analysis proves that the algorithm makes the whole P2P networks have resilience and resistance against collusive attack.