WTR:A Reputation Metric for Distributed Hash Tables Based on a Risk and Credibility Factor

作     者：Xavier Bonnaire Erika Rosas 

作者机构：Departamento de InformaticaUniversidad Tecnica Federico Santa MariaValparaisoChile Laboratoire d'Informatique de Paris 6Universite Pierre et Marie CurieCNRS UMR 7606 INRIA REGALParisFrance 

出 版 物：《Journal of Computer Science & Technology》 (计算机科学技术学报（英文版）)

年 卷 期：2009年第24卷第5期

页      面：844-854页

核心收录：

学科分类：12[管理学] 1201[管理学-管理科学与工程(可授管理学、工学学位)] 08[工学] 081201[工学-计算机系统结构] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by an INRIA/CONICYT French-Chilean cooperation project under Grant No.INRIA0703 

主　　题：peer to peer reputation system risk evaluation 

摘      要：The growing number of popular peer to peer applications during the last five years has implied for researchers to focus on how to build trust in such very large scale distributed systems. Reputation systems have shown to be a very good solution to build trust in presence of malicious nodes. We propose in this paper a new metric for reputation systems on top of a Distributed Hash Table that uses a notion of risk to make the applications aware of certain behaviours of malicious nodes. We show that our metric is able to significantly reduce the number of malicious transactions, and that it also provides very strong resistance to several traditional attacks of reputations systems. We also show that our solution can easily scale, and can be adapted to various Distributed Hash Tables.