Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2010, Vol. 33 ›› Issue (1): 33-37.doi: 10.13190/jbupt.201001.33.219

• Papers • Previous Articles     Next Articles

Construct a Risk-Aware Peer-to-Peer Security Trust Model

LU Feng;ZHENG Kang-feng;NIU Xin-xin;YANG Yi-xian   

  1. (1.State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China; 2.Key Laboratory of Network and Information Attack and Defence Technology, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China; 3.National Engineering Laboratory for Disaster Backup and Recovery, Beijing University of Posts and Telecommunications, Beijing 100876, China)
  • Received:2009-09-08 Revised:2009-10-28 Online:2010-02-28 Published:2010-02-28
  • Contact: Lu Feng

Abstract:

To build an efficient, scalable, and security trust model in peer-to-peer (P2P) networks, the P2P trust model is studied and a risk-aware P2P trust model is built. This model constructs a new relationship model between risk and reputation, and interlards recommendation reputation with risk. By means of the new risk evaluation function and the computation of probability model in series, the risk brought by direct exchange and indirect recommendation is well quantified. To avoid slander or coordinated cheat attack among malicious nodes, this model filters the local recommendation reputation and local recommendation risk with the center deviation method. Through P2P networks simulations, the performance gains brought by this model are significant and the system security is greatly improved.

Key words: peer-to-peer network, trust model, risk evaluation, recommendation reputation, local reputation