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Research of an Improved Hybrid Trust Model in P2P Networks

Author: LiHongYan
Tutor: JiangJianPing
School: Dalian Maritime University
Course: Computer Science and Technology
Keywords: P2P networks Trust model Direct trust Recommended node Indirect trust
CLC: TP393.08
Type: Master's thesis
Year: 2010
Downloads: 72
Quote: 0
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Abstract


P2P trust model is the key to solve the problem of P2P network security . Existing trust model still exists Trusted Computing sidedness and inaccuracy and can not effectively inhibit the such as Joint malicious fraud problem , so this paper to study and learn from the existing trust model based on trust model based on these issues . the crucial technical analysis , an improved hybrid P2P trust model . This model is a hybrid combination of direct trust and indirect trust trust model . Direct trust node and the destination transaction node transaction history , including the transaction amount , transaction time , transaction evaluation value multiple influencing factors of trust value . In order to more effectively suppress purely malicious behavior and oscillation trading network , the number of failed transactions in its influencing factors and penalty factor were the focus of analysis to improve the general trust model each transaction failures each punishment are the same , so the aggravated punishment With the increase in the number of failures at a time , so it is reasonable to calculate the trust value . Indirect trust , the trust value is calculated from the recommendation trust value according to the recommendation nodes recommended evaluation value and recommended node itself . Each node in the network in addition to the recommended evaluation value of the recommended node is stored , also stored trust value of their recommendation . In order to better distinguish between different recommended node recommended trust value , the recommended node into a node of \Storage recommended node recommendation trust value by a comparative analysis of the actual trust value of the node provides the recommended evaluation recommended value and purpose of the transaction node , constantly updated, to provide a basis for after the recommendation of the node itself credible , long-term significance malicious recommendation on effectively resist the recommended nodes . Simulation results show that the model can effectively effectively evaluate the node trust . Compared with the traditional trust model , has better resisted the attacks of malicious nodes , and transactions in the network has a high success rate .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > Computer Network Security
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