Computer Science

Computer Science ›› 2024, Vol. 51 ›› Issue (8): 364-370.doi: 10.11896/jsjkx.230500037

• Computer Network • Previous Articles     Next Articles

Construction of Internet of Vehicles Covert Channel Based on Websocket Protocol

ZHAO Hui, PENG Jianyou, QIN Yulin, HAN Lili   

  1. 1 School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China
    2 Chongqing Key Laboratory of Signal and Information Processing,Chongqing 400065,China
  • Received:2023-05-08 Revised:2023-08-30 Online:2024-08-15 Published:2024-08-13
  • About author:ZHAO Hui,born in 1980,Ph.D,professor,doctorial supervisor.Her main research interests include information security and vehicle networking security.
  • Supported by:
    Science and Technology Research Project of Chongqing Municipal Education Commission(KJZD-K202000602) and Key R & D Program of Sichuan Province(2022YFG0022).

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Abstract: 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 channel.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 order 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 network 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.

Key words: Internet of Vehicles, Websocket, Information separation and aggregation, Frequency hopping technology, Least square

CLC Number: 

  • TP309.2
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