Terminal protection method based on lightweight cipher algorithm

• Main Authors: LI QINYUAN, WU KEHE, LI NIGE, YANG CHENGCHUN, FAN QI, WANG HAOMIN, XIAO ZHUO, GAO XUE, JIANG YUAN, ZHAO TONG, HAN JIAJIA, SUN XIN, CHENG XIANGXIN, SHAO ZHIPENG, LI WEI
• Format: Patent
• Language: Chinese; English
• Published: 06.07.2021
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses a terminal protection method based on a lightweight cipher algorithm. The method encrypts terminal identity information by using an ECC algorithm and a lightweight block cipher algorithm is designed by using a Feistel structure. According to the method, a terminal identity privacy protection technology based on the lightweight cipher algorithm is adopted, so that the key length in the cipher algorithm is appropriately reduced, and the operation complexity and the occupied memory space during algorithm implementation are reduced; the lightweight cipher algorithm reduces the encryption turns of the plaintext in the cipher algorithm process, and reduces the energy consumption; and the protection of the identity privacy of the terminal is improved. According to the method adopted by the invention, a public key encryption technology is introduced into terminal data encryption, so that even if the data is intercepted by an attacker in transmission, the intercepted public key loses significan