Aes Algorithm Is Improved And The Fpga Design

With the rapid development of computing technology and network, information security has become more and more attention. Cryptography can provide critical theory and technology for information security, has an irreplaceable position in the field of information security.lt is widely used in banking, Internet, aviation, government, military and other departments, to protect all aspects of social life. AES advanced encryption technology, a designed to be simple, strong anti-attack capability, encryption speed, portability has been extensive research in an international context. Therefore, the AES-based research on information security in China, has important practical significance.This paper studies the AES encryption algorithm, the main contents include:first, the details of encryption and decryption process, the S-box design principles, the formation process. And a variety of attacks against the AES, the second introduces a new S-box method proposed by Wu Wenling, who analyzed the nature of cryptography. For cryptography insufficient proposed a dynamic S-box encryption implementations. Fourth, the improved algorithm on the hardware platform, the use of simulation tools, encryption and decryption algorithm correctness of the implementation and verification to prove feasible divisional encryption and decryption system is working properly, encryption system throughput.This is the design of FPGA-based hardware platform, FPGA as the hardware platform has advantages of low cost, high-speed, low power, very suitable for cryptography, high-speed processing of large amounts of data, hardware design in this article section details the design process, the system the working principle, the interface definition, and finally using Modelsim simulation software on the system simulation.