关键词: 网络安全, 车联网蠕虫, 随机传播模型

Abstract: The stochastic propagation model of worms in Internet of vehicles is presented based on stochastic process theory. The modeling of worms in Internet of vehicles is divided into the ideal environment in Internet of vehicles without security software protection and the real environment with security software protection. In the ideal case, worms in Internet of vehicles are modeled based on the Galton-Watson branching process, and it is proven that the extinction probability of worms in Internet of vehicles is only related to the traffic flow, but is not related to the probability distribution of the traffic flow. In reality, when the highway traffic flow follows Poisson distribution, worms in Internet of vehicles are modeled based on queuing theory and the stability condition is researched. When the traffic flow of the freeway follows the normal distribution, worms in Internet of vehicles are modeled based     on the Markov chain. Finally, the stochastic propagation model of worms in Internet of vehicles is verified by the simulation.

Key words: network security, worms in Internet of vehicles, stochastic propagation model