Research on privacy preservation in P2P systems

Abstract

Privacy preservation plays an important role in P2P systems. The increasing amount of resource sharing and collaboration calls for privacy-preserving mechanisms. Earlier privacy preserving mechanisms usually use the anonymous communication way to provide privacy protection such as kanonymity method we attempt to address the privacy preserving problems by using friendly peers as proxies during request and responding. This scheme removes the immediate association between the providers and requesters of resource. The realization of this scheme lies on the trustworthiness and reliability of these friendly peers. The probability that a friendly peer leaks private attributes is evaluated in this paper. Experiments have been carried out in order to verity the effectiveness of the scheme. We compare the performance of our privacy-preserving scheme with the conventional anonymity based privacy preserving mechanism with respect to the malicious behavior factor in the P2P system. The results show the proposed scheme addresses the privacy preserving problems by using friendly peers as proxies during request and responding which is less influenced by the misbehaviors of untrustworthy peers.