The importance of considering unauthentic transactions in trust management systems

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• 作者：Pilar Manzanares-Lopez ; ^{pilar.manzanares@upct.es}  ; [Author Vitae] ; Josemaria Malgosa-Sanahuja ^{josem.malgosa@upct.es}  ; [Author Vitae] ; Juan Pedro Muñ ; oz-Gea ^{juanp.gea@upct.es}  ; [Author Vitae]
• 关键词：Trust management ; P2P systems ; File sharing
• 刊名：Journal of Parallel and Distributed Computing
• 出版年：2012
• 期刊代码：188_07437315
• 类别：et
• 出版时间：June, 2012
• 卷：72
• 期：6
• 页码：809-818
• 文件大小：463 K

摘要

In peer-to-peer (P2P) networks, trust management is a key tool to minimize the impact of malicious nodes. EigenTrust is claimed to be one of the most powerful distributed reputation management systems focused on P2P file-sharing applications. It is the theoretical base of other systems, and it has also been directly modified in an attempt to improve its performance. However, none of them give appropriate importance to all the information about transactions. This paper proposes an enhancement of EigenTrust, which considers unsatisfactory transactions in greater depth. Pos&Neg EigenTrust is able to obtain a blacklist of the identities of the malicious nodes. Therefore, it is able to significantly reduce the number of unsatisfactory transactions in the network.