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BT网络中基于声望值的信任管理模型

, PP. 1581-1585

Keywords: 计算机应用,BitTorrent,声望值,信任

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Abstract:

针对BitTorrent网络中free-riding行为导致文件分享速率降低、上行带宽浪费的问题,提出一种基于声望值的信任管理模型。模型使用“上传信任值”与“评价可信值”两种评价标准迭代计算的方式对节点在网络中的表现予以评价,结合节点的下载行为和上传行为,避免节点针对单一评价标准做出相应欺骗行为,通过多个指标识别不诚实节点,降低free-riding节点获得资源的机会。PeerSim仿真实验结果表明:该模型可以有效屏蔽free-riding行为,提高BitTorrent网络的文件分享速率,对女巫攻击和勾结攻击具有较好的屏蔽效果。

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