Construction of Credit based Distributed Trust Management Model for P2P Network
Han Yingjun, Lian Hongjun North China University of Science and Technology Hebei, 063009, China
Abstract: With the emerging of peer-to-peer (P2P) network in recent years, unsafety problems underlying becomes more obvious, such as dishonest recommendation, collusive cheat and complex strategic attack behavior. But the current trust model is able to process the above problems in a better way. Thus this study proposes a credit-based distributed trust management model for P2P, named RA Trust and applies it to quantify and evaluate credibility of peer. In construction of trust model, we use time interval to mark time property of experience and recommendation and describe the final trust level of peer using peer credibility, short-term trust and long-term trust as well as trust measurement of peer in a more accurate way by introducing trust deviation value and trust abuse value. Results suggest that, RA Trust has better dynamic adaptive ability and can effectively process strategic behavioral changes of dynamic malicious peer and attack of dishonest feedback on system.
Keywords: P2P, Trust Management Mode, Malicious Peer, RA Trust Construction of Credit based Distributed Trust Management Model for P2P Network
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