Production line network security protection method based on equipment fingerprint and national secret algorithm

• Main Authors: XUE SHANLIANG, WANG CAIYI, HUANG JIAN, FANG DANFENG, DUANMU JUNYI, HAN HAO
• Format: Patent
• Language: Chinese; English
• Published: 03.01.2023
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

A production line network security protection method based on an equipment fingerprint and a national secret algorithm is characterized by comprising the following steps: carrying out equipment identity authentication based on the equipment fingerprint, extracting the equipment fingerprint through an electrical characteristic of a high-low voltage difference of CAN bus equipment, and carrying out authentication on the equipment identity based on a Gaussian naive Bayes classifier; according to hardware data transmission encryption and decryption based on a national cryptographic algorithm, an open-source strongSwan project is utilized, and autonomous and controllable domestic cryptographic algorithms such as SM2, SM3 and SM4 are applied. According to the method, the equipment fingerprint is identified based on the naive Bayes classifier to perform equipment identity authentication, so that the access of unauthorized industrial equipment and the change of the equipment fingerprint caused by malicious tampering