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基于贝叶斯网络信任构建来缓解MANET网络安全威胁

Trust Establishment Based on Bayesian Networks for Threat Mitigation in Mobile Ad Hoc Networks
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摘要 由于移动Ad hoc(MANET)网络具有无固定基础设施、通信信道不可靠、节点随机移动等特性,对其安全问题的研究一直富有挑战性。信任机制结合加密技术可以有效缓解各类网络攻击(例如丢包攻击)。考虑到MANET网络的特性,需采取智能化方法来实现信任构建,进而发现攻击者的恶意行为。文章侧重缓解丢包攻击与数据包篡改攻击威胁,提出了一种基于贝叶斯网络的可信度评估构建机制,该机制可有效进行因果推理。文章提出的信任模型可有效区别导致网络丢包的不同原因:是由于网络信道不可靠,还是由于遭受恶意攻击。这样,即可计算出更精确的可信度。最后,仿真结果表明文章所提算法在恶劣网络环境中可行且有效。
出处 《通信对抗》 2015年第3期58-63,共6页 Communication Countermeasures
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