基于完全博弈的Ad hoc网络风险评估

Risk Assessment of Ad hoc Network Based on Complete Game

利用博弈论原理,从Ad hoc网络节点资产、攻击的检测率和误检率等方面对攻防双方不同策略进行综合量化,建立了攻防博弈下的Ad hoc网络风险评估模型。给出了纳什均衡求解算法和网络风险评估算法,通过求解攻防双方最优策略组合,得到攻防平衡状态下的网络风险评估值。通过仿真实验,证明网络风险值与攻击检测率、误检率和节点资产之间的关系符合实际情况,且评估算法操作简单,较其他评估模型更加客观准确,对提升Ad hoc网络安全具有一定参考价值。

Based on the game theory principle,the different strategies of the attack and defense sides are comprehensively quantified from the nod assets of the Ad hoc network,the detection rate of the attack and the error detection rate.The risk assessment model of the Ad hoc network under the attack and defense game is established.The Nash equilibrium solution algorithm and the network risk assessment algorithm are given,and the network risk assessment value under the attack and defense equilibrium state is obtained by solving the optimal strategy combination of the attack and defense sides.Through simulation experiments,it is proved that the relationship between network risk value and attack detection rate,error detection rate and node assets is coincident with the actual objective situation,and the evaluation algorithm is simple in operation and feasible in calculation.Compared with other evaluation models,this model is more objective and accurate,and has certain reference value for improving Ad hoc network security.