结构化P2P文件共享系统中保证文件可用性的活动监控

Guowei Huang, Zhi Chen, Qi Zhao, G. Wu
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引用次数: 2

摘要

协作式结构化点对点文件共享系统要求参与系统的节点需要维护其他节点的位置映射。然而,自私的节点没有动力将自己的资源捐赠给其他节点,如果他们可以免费获得系统的资源,他们将拒绝承担维护位置映射的责任。因此,自私节点的这种搭便车行为将使许多文件对整个系统不可用。为了解决这个问题,我们提出了一个健壮的分布式系统来监控每个节点的活动并评估节点的声誉,这影响了节点对系统资源的访问。我们对该系统进行了分析,并证明了该系统在强攻击模型下具有可扩展性和安全性。仿真结果表明,该系统能够有效地检测和防止搭便车行为。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Activity Monitoring to Guarantee File Availability in Structured P2P File-sharing Systems
A cooperative structured peer-to-peer file-sharing system requires that the nodes participating in the system need to maintain the location mappings of other nodes. However, the selfish nodes have no incentive to donate their own resources to other nodes and they will refuse to take the responsibility for the maintenance of location mappings, if they can get the system's resources for free. Thus, this free-riding behavior of selfish nodes will make many files unavailable to the whole system. To address this problem, we propose a robust distributed system to monitor the activities of each node and evaluate the node's reputation, which influences the node's access to the system resources. We analyze the system and demonstrate that it is scalable and is secure under a strong attack model. Furthermore, simulation results show that the system can detect and prevent the free- riding behavior effectively and efficiently.
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