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山东大学学报（理学版） ›› 2014, Vol. 49 ›› Issue (09): 97-102.doi: 10.6040/j.issn.1671-9352.2.2014.307

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P2P系统中一种基于TMR优化的信誉评估算法

彭浩, 赵丹丹, 韩建民, 鲁剑锋   

  1. 浙江师范大学数理与信息工程学院计算机科学与工程系, 浙江 金华 321004
  • 收稿日期:2014-06-24 修回日期:2014-08-27 出版日期:2014-09-20 发布日期:2014-09-30
  • 作者简介:彭浩（1982-），男，讲师，博士，主要研究方向为可信计算、网络与信息安全、复杂系统安全.E-mail：hpeng@zjnu.edu.cn
  • 基金资助:
    国家自然科学基金资助项目（61170108）；教育部人文社会科学研究青年基金项目（12YJCZH142）；浙江省自然科学基金资助项目（LQ13F020007）；上海市信息安全综合管理技术研究重点实验室开放课题项目（AGK2013003）

A reputation evaluation algorithm based on transitive mode of reputation optimization in P2P system

PENG Hao, ZHAO Dan-dan, HAN Jian-min, LU Jian-feng   

  1. 1. Department of Computer Science and Engineering, College of Mathematics, Physics and Information Engineering, Zhejiang Normal University, Jinhua 321004, Zhejiang, China
  • Received:2014-06-24 Revised:2014-08-27 Online:2014-09-20 Published:2014-09-30

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摘要： P2P系统中的节点具有随机性和动态性，如何建立节点间的信任关系，是亟需解决的难点和关键性问题。目前P2P系统中主要采用传递模式算法计算节点的信誉值，分析了该算法存在的信誉值评估结果失真的问题，并对算法进行了优化。实验结果表明，信誉评估的优化算法得出的信誉值更加接近理想值，从而提高了P2P系统对恶意节点的识别能力。

关键词: P2P, 本地信誉值, 传递模式, 全局信誉值

Abstract: In P2P(Peer-to-Peer)system,peers present the characteristics of random and dynamic, and then how to establish a trust relationship between peers is a difficult and key problem that is urgent to solve. At present, the algorithm of reputation computing based on transitive mode is used in P2P system. In this paper, this algorithm was optimized based on analyzing its distortion problem of reputation assessing value. The simulation results show that the reputation assessing value of the optimized algorithm is closer to the ideal value. In this way, the discovery ability of malicious peers is enhanced at the same time.

Key words: P2P (peer-to-peer), transitive mode, local reputation value, global reputation value

中图分类号: 

  • TP393
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