Abstract:

At present， the mainstream vehicle-cloud secure communication method uses public key to protect symmetric key to encrypt data， but the public key method is time-consuming and there is the risk of being quickly cracked by supercomputing power represented by quantum computing. Therefore， the current intelligent networked vehicle-cloud communication has great security risk. In this paper， quantum keys are applied to the protection of symmetric keys， and a new vehicle-cloud encryption communication architecture based on quantum keys is proposed， which realizes wireless distribution of symmetric session keys through preset keys and real-time negotiation of symmetric session keys under the BB84 protocol. The security analysis and performance analysis of the above-mentioned architecture show that the architecture has high protection for data in threat scenarios， with the average communication delay and packet loss rate controlled within the range of 16.861 ms and 0.0248%， thus achieving safe and efficient vehicle-cloud communication.

Key words: encrypted communication, car networking, quantum key, vehicle-cloud architecture