Research on the FPGA Implementation of the SM4 Algorithm

The SM4 algorithm is a symmetric key block cipher that uses a Feistel structure and is widely applied in the confidentiality of information and data. This paper explores the process and performance evaluation of implementing the SM4 symmetric encryption algorithm on an FPGA platform. As a national standard encryption algorithm in China, SM4 is widely used for data protection and information security. In this study, we utilized Quartus II software for design and simulation, and ModelSim for verification, ensuring the correctness and efficiency of the algorithm implementation. In the experiments, we employed the 5AGXFB3H4F35I3 FPGA device to implement the core functionalities of the SM4 algorithm. Through reasonable allocation of logic resources, we optimized the balance between speed and efficiency. The experimental results demonstrate that the implemented SM4 algorithm can effectively perform encryption tasks on the FPGA platform. This research provides strong support for the hardware acceleration of the SM4 algorithm in practical applications, which demonstrated the wide range of applications of FPGA in the field of information security.