TRUST MODEL BASED ON THE MULTINOMIAL SUBJECTIVE LOGIC AND RISK MECHANISM FOR P2P NETWORK OF FILE SHARING  

作　　者：Tian Junfeng Li Chao He Xuemin 

机构地区：[1]College of Mathematics ＆ Computer Science, Hebei University, Baoding 071002, China [2]Department of Modern Science ＆ Technology, Agricultural University of Hebei, Baoding 071002, China

出　　处：《Journal of Electronics(China)》2011年第1期108-117,共10页电子科学学刊（英文版）

基　　金：Supported by the National Natural Science Foundation of China(No.60873203);the Foundation of Key Laboratory of Aerospace Information Security and Trusted Computting,Ministry of Education(No.AISTC2009_03);Hebei Natural Funds for Distinguished Young Scientists(No. F2010000317);the Natural Science Foundation of Hebei Province(No.F2008000646)

摘　　要：In order to deal with the problems in P2P systems of file sharing such as unreliability of the service,security risk and attacks caused by malicious peers,a novel Trust Model based on Multinomial subjective logic and Risk mechanism(MR-TM) is proposed.According to the multinomial subjective logic theory,the model introduces the risk mechanism.It assesses and quantifies the peers' risk,through computing the resource value,vulnerability,threat level,and finally gets the trust value by the risk value and the reputation value.The introduction of the risk value can reflect the recent behaviors of the peers better and make the system more sensitive to malicious acts.Finally,the effectiveness and feasibility of the model is illustrated by the simulation experiment designed with Peersim.In order to deal with the problems in P2P systems of file sharing such as unreliability of the service, security risk and attacks caused by malicious peers, a novel Trust Model based on Multinomial subjective logic and Risk mechanism （MR-TM） is proposed. According to the multinomial subjective logic theory, the model introduces the risk mechanism. It assesses and quantifies the peers＇ risk, through computing the resource value, vulnerability, threat level, and finally gets the trust value by the risk value and the reputation value. The introduction of the risk value can reflect the recent behaviors of the peers better and make the system more sensitive to malicious acts. Finally, the effectiveness and feasibility of the model is illustrated by the simulation experiment designed with Peersim.

关 键 词：Multinomial subjective logic Resource value VULNERABILITY THREAT 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]