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| Secure communication method for automotive ethernet based on dynamic key |
| FAN Jingjing1，2, LIU Zhuang1，2, CHEN Chao1，2, HUANG Chen3 |
| 1. School of Electrical and Control Engineering, North China University of Technology, Beijing 100144, China; 2. Jiangsu Industrial Innovation Center of Intelligent Equipment Co., Ltd., Changzhou, Jiangsu 213300, China; 3.School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China |
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Abstract For the security concerns of communication data and key in automotive ethernet, an automotive ethernet security communication method based on dynamic keys was innovatively designed. The attack tree model for automotive ethernet security threats was established to analyze the faced security threats. The comprehensive architecture for automotive ethernet security communication methods was constructed to address the threats, and the dynamic key algorithm model was designed to generate implicit dynamic keys. The secure communication method based on dynamic keys was designed to encrypt original data through dynamic keys, and the digests were generated and compared at the receiving end. Communication and network attack processes between domains were simulated using Linux-based systems, I.MX6ULL microcontrollers and Windows devices, and the difference degrees of keys, ciphertexts and plaintexts were compared. The communication process was attacked to analyze the data interactions by Wireshark software. The results show that the proposed method can effectively ensure the key security and the confidentiality, freshness, authenticity and integrity of automotive ethernet data, and it can effectively counter tampering attacks and replaying attacks.
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Received: 20 March 2023
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2024, Vol. 45 
