DHTrust: A Robust and Distributed Reputation System for Trusted Peer-to-Peer Networks
DHTrust: A Robust and Distributed Reputation System for Trusted Peer-to-Peer Networks
复制标题
DOI：
10.1002/cpe.1749
复制
发表时间：
2010-12
期刊：
影响因子：
--
通讯作者：
Yaqiong Liu;Weilian Xue;Keqiu Li;Zhongxian Chi;G. Min;W. Qu
中科院分区：
文献类型：
--
作者：
Yaqiong Liu;Weilian Xue;Keqiu Li;Zhongxian Chi;G. Min;W. Qu
对等网络（Peer-to-Peer，P2P）系统的匿名性和动态性使其成为自私和恶意行为的理想媒介。为了解决这个问题，P2P信誉系统被提出来评估节点的可信度，防止自私、不诚实和恶意的节点行为，它收集节点的局部信誉值并将其聚合成全局信誉值。在本文中，我们提出了一个分布式哈希表信任覆盖网络（DHTON）模型的网络结构和存储的信誉信息。我们还设计了一个健壮的分布式信誉系统DHTrust，它充分利用分布式哈希表（Distributed Hash Table，DHT）来分配本地信誉，用真实的信誉信息来抵消虚假信誉信息的破坏。通过对两个信誉分数的信任评估，我们还可以区分和评估P2P网络中节点的基本行为，即，提供服务和发布信誉分数。通过仿真实验，我们发现我们的系统在收敛速度和聚集精度方面有显著的性能提升，最重要的是，对恶意节点具有鲁棒性。
The anonymity and dynamic characters of Peer-to-Peer (P2P) system makes it an ideal medium for selfish and vicious action. In order to solve this problem, P2P reputation systems are proposed to evaluate the trustworthiness of peers and to prevent the selfish, dishonest, and malicious peers' behaviors, which collects local reputation scores and aggregates them into the global reputation. In this paper we propose a DHT trust overlay network (DHTON) to model the network structure and the storage of reputation information. We also design a robust and distributing reputation system, DHTrust, which takes full advantage of the Distributed Hash Table (DHT) to distribute local reputation to trade off the damage of fake reputation information by genuine reputation information. By using the trust evaluation towards two reputation scores, we can also distinguish and evaluate the fundamental behaviors of peers in P2P network, i.e., providing service and issuing reputation scores. Through the simulation experiments, we find our system makes significant performance gains in convergence speed and aggregation accuracy, and the most important, is robust to malicious peers.