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中文摘要：
针对目前攻击者可以结合多种攻击手段对ad hoc网络进行复合攻击的现状,提出了一种健壮的多维信任模型（RMTM）以增强ad hoc网络的可生存性。RMTM基于D-S证据理论,将节点的攻击证据分成多个维度,每个维度的信任根据基本信度分配函数计算,并通过多维信任融合实现对节点的综合评价。同时,为了应对攻击者对信任模型本身进行攻击,设计了相应容忍算法以提高RMTM的健壮性。仿真实验验证了RMTM可在较低系统开销内有效防御ad hoc网络复合攻击和信任模型攻击,进而大幅度地增强了ad hoc网络可生存性。
英文摘要：
Attackers could perform the blended attack against ad hoc networks through utilizing several attack methods together.Under this circumstance,a robust multi-dimensional trust model（RMTM） to improve the survivability of ad hoc networks was proposed.RMTM was based on D-S theory.Nodes＇ attack evidences were classified into several dimen-sions and the trust of each dimension was computed according to basic probability assignment function.Then RMTM implemented the comprehensive evaluation through the multi-dimensional trust fusion.In order to resist the attacks against trust models themselves,the corresponding tolerant algorithms were designed to enhance the RMTM＇s robustness.The simulations show that RMTM can effectively defense against both ad hoc network blended attack and trust model attacks with limited overload and consequently it significantly improves the survivability of ad hoc networks.
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