Construction of Internet of Vehicles Covert Channel Based on Websocket Protocol
Aiming at the problem that the construction method of covert channel under traditional Internet of Vehicles protocol is single and cannot be applied to complex network environment,a construction method of covert channel in Internet of Vehicles based on WebSocket protocol is proposed by analyzing the data frame format and communication mechanism of Websocket-a lightweight application layer protocol of Internet of Things.This method uses information separation and aggregation algorithm to transmit the covert information in multiple dimensions to enhance the transmission rate and anti-exposure of the covert chan-nel.Besides,considering the dynamic topological characteristics of the Internet of Vehicles network,the information separation and aggregation mode and coding mapping table are transformed adaptively based on frequency hopping technology.Finally,in or-der to improve the concealment of the channel,the least square algorithm is used to simulate the transmission characteristics of normal network traffic.The results of simulation experiments show that the constructed covert channel is less affected by net-work fluctuations and has better robustness when facing poor network environment.And compared with the covert channel with single-dimension transmission,it has certain improvement in terms of concealment and transmission rate.
Internet of VehiclesWebsocketInformation separation and aggregationFrequency hopping technologyLeast square
万方数据
维普
