Data security in autonomous vehicles is of primary importance due to the possibility of cyberattacks on these interconnected and complex systems. As these vehicles are equipped with a number of sensors, software, and communication infrastructure, they are more vulnerable to different types of security issues. In this article. blockchain-supported QoS-based secure data communication (QoS-SDC) is proposed for high-speed, software-defined autonomous vehicles. This proposed mechanism will provide a promising solution for delivering protected data among autonomous vehicles. This model is evaluated by using the NS3 simulator, and the simulation results exhibit satisfactory secure data transactions.

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