In order to protect the node information of large embedded network,a security forecasting model based on game theory is put forward,and its security forecasting system for node information in large embedded network is realized. The interre-lation of gamer,game strategy and expected function in game theory is introduced. The attacker and defender of nodes informa-tion are taken as the gamers to build the four-tuple safety forecasting model. The expected function related to the game strategy behavior is given. If the nodes information is insecure,the optimal game strategy set is get according to the principle of non-co-operative game equilibrium. If the nodes information is secure,the expected function is taken as the result output of the safety forecasting. The experimental verification results show that the security forecasting model based on game theory has high node in-formation transmission performance and high node information search performance.%为了防护大型嵌入式网络中的节点信息安全,提出基于博弈论的安全预判模型,并对基于博弈论的大型嵌入式网络节点信息安全预判系统进行实现.介绍了博弈论中博弈者、博弈策略、期望函数的相互关系,取节点信息攻守双方为博弈者,构建四元组安全预判模型,给出与博弈策略行为有关的期望函数.当节点信息不安全时,根据非合作博弈均衡原理得到最佳博弈策略集合;当节点信息安全时,将期望函数作为安全预判结果输出.经过实验验证可知,所提基于博弈论的安全预判模型具有很好的节点信息传输性能和节点信息搜索性能.
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