Volume 9 Number 1
February 2012
Article Contents
Chun-Ling Cheng, Xiao-Long Xu and Bing-Zhen Gao. METrust: A Mutual Evaluation-based Trust Model for P2P Networks. International Journal of Automation and Computing, vol. 9, no. 1, pp. 63-71, 2012. doi: 10.1007/s11633-012-0617-5
Cite as: Chun-Ling Cheng, Xiao-Long Xu and Bing-Zhen Gao. METrust: A Mutual Evaluation-based Trust Model for P2P Networks. International Journal of Automation and Computing, vol. 9, no. 1, pp. 63-71, 2012. doi: 10.1007/s11633-012-0617-5

METrust: A Mutual Evaluation-based Trust Model for P2P Networks

Author Biography:
  • Corresponding author: Chun-Ling Cheng
  • Received: 2010-09-10
Fund Project:

This work was supported by National Natural Science Foundation of China (No.60873231), Research Fund for the Doctoral Program of Higher Education (No.20093223120001), Science and Technology Support Program of Jiangsu Province (No.BE2009158), Natural Science Fund of Higher Education of Jiangsu Province (No.09KJB520010) and Special Fund for Fast Sharing of Science Paper in Net Era by CSTD (No.2009117).

通讯作者: 陈斌, bchen63@163.com
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METrust: A Mutual Evaluation-based Trust Model for P2P Networks

    Corresponding author: Chun-Ling Cheng
Fund Project:

This work was supported by National Natural Science Foundation of China (No.60873231), Research Fund for the Doctoral Program of Higher Education (No.20093223120001), Science and Technology Support Program of Jiangsu Province (No.BE2009158), Natural Science Fund of Higher Education of Jiangsu Province (No.09KJB520010) and Special Fund for Fast Sharing of Science Paper in Net Era by CSTD (No.2009117).

Abstract: It is necessary to construct an effective trust model to build trust relationship between peers in peer-to-peer (P2P) network and enhance the security and reliability of P2P systems. The current trust models only focus on the consumers' evaluation to a transaction, which may be abused by malicious peers to exaggerate or slander the provider deliberately. In this paper, we propose a novel trust model based on mutual evaluation, called METrust, to suppress the peers' malicious behavior, such as dishonest evaluation and strategic attack. METrust considers the factors including mutual evaluation, similarity risk, time window, incentive, and punishment mechanism. The trust value is composed of the direct trust value and the recommendation trust value. In order to inhibit dishonest evaluation, both participants should give evaluation information based on peers' own experiences about the transaction while computing the direct trust value. In view of this, the mutual evaluation consistency factor and its time decay function are proposed. Besides, to reduce the risk of computing the recommendation trust based on the recommendations of friend peers, the similarity risk is introduced to measure the uncertainty of the similarity computing, while similarity is used to measure credibility. The experimental results show that METrust is effective, and it has advantages in the inhibition of the various malicious behaviors.

Chun-Ling Cheng, Xiao-Long Xu and Bing-Zhen Gao. METrust: A Mutual Evaluation-based Trust Model for P2P Networks. International Journal of Automation and Computing, vol. 9, no. 1, pp. 63-71, 2012. doi: 10.1007/s11633-012-0617-5
Citation: Chun-Ling Cheng, Xiao-Long Xu and Bing-Zhen Gao. METrust: A Mutual Evaluation-based Trust Model for P2P Networks. International Journal of Automation and Computing, vol. 9, no. 1, pp. 63-71, 2012. doi: 10.1007/s11633-012-0617-5
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