基于概率攻击图的船舶网络安全评估模型  

Ship cyber security assessment model based on probability attack graph

作　　者：杨家轩[1,2] 许洲锦 来源 孙瑶 YANG Jiaxuan;XU Zhoujin;LAI Yuan;SUN Yao(Navigation College,Dalian Maritime University,Dalian 116026,China;Dalian Ship Cyber Security Engineering Research Center,Dalian 116026,China)

机构地区：[1]大连海事大学航海学院,辽宁大连116026 [2]大连市船舶网络安全工程研究中心,辽宁大连116026

出　　处：《大连海事大学学报》2023年第1期26-33,共8页Journal of Dalian Maritime University

基　　金：国家自然科学基金国际(地区)合作与交流项目(42261144671);国家自然科学基金面上项目(61771086)。

摘　　要：为提升船舶网络安全性,结合概率图模型和时间指标构建一种定量的船舶网络安全评估模型,在考虑时间指标基础上,利用概率攻击图计算船舶网络被攻克概率。运用蒙特卡洛法模拟得出船舶网络被攻克概率与访问路径长度、节点被攻克概率、时长的关系。结果表明,基于概率攻击图的船舶网络安全评估模型可评估不同指标对船舶网络被攻克概率的影响。In order to improve the ship cyber security evaluation model,a quantitative ship cyber security evaluation model was built by combining probability graph model and time index.On the basis of considering time index,the probability attack graph was used to calculate the probability of the ship cyber being attacked.Monte Carlo method was used to simulate the relationship between the probability of ship cyber being conquered and the length of access path,the probability of node being conquered and the time length.The results show that the ship cyber security evaluation model based on probability attack graph can evaluate the impact of different indicators on the probability of ship cyber being attacked.

关 键 词：船舶网络安全 概率攻击图 蒙特卡洛法 评估模型 

分 类 号：U674.1[交通运输工程—船舶及航道工程] TP393.08[交通运输工程—船舶与海洋工程]