Abstract
Building trust relationship between peers in a large-scale distributed P2P file-sharing system is a fundamental and challenging research topic. Recommendation based trust mechanism is widely employed to establish the trust relationship. However, most existing approaches can not efficiently deal with inconsistent or conflicting recommendation information, and uncertainty of information. Dempster-Shafer (D-S) evidence theory is preponderant in tackling uncertainty of information, but classical combination rule always results in unreasonable results especially when evidences severely conflict each other. In this paper, we improve the combination rule for D-S evidence theory and develop a novel trust model based on it. For the problem of security, some measures are also proposed to defense against several malicious attacks. Experimental results show that the proposed model can significantly improve the successful transaction rate of P2P networks and effectively detect malicious behaviors in P2P networks.
This work was supported by the National Basic Research Program of China (Grant No. 2003CB314806 and 2006CB701306), the National Natural Science Foundation of China (No. 90204003 and 60472067).
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Tian, C., Zou, S., Wang, W., Cheng, S. (2007). A New Trust Model Based on Advanced D-S Evidence Theory for P2P Networks. In: Dimitrakos, T., Martinelli, F., Ryan, P.Y.A., Schneider, S. (eds) Formal Aspects in Security and Trust. FAST 2006. Lecture Notes in Computer Science, vol 4691. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-75227-1_18
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DOI: https://doi.org/10.1007/978-3-540-75227-1_18
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