A Dynamic Encryption Algorithm Based On Network Transferring And Design Of FPGA

With the fast development of the internet, it is hot issue studied by people that the security problem existed in transferring information in internet, especially the encryption algorithm plays a vital role in the field of information security which have a direct effect on the future and development of our country. With the continual improvement of analysis of crypt,power of chip and computer technology, especially the wide use of embedded devices, it is hard to meet the new applied demand on the aspects of real-time,security,resource etc. Encryption algorithm based fully software isn't used in embedded system, and Encrypt algorithm by hardware compiling is the trend nowadays. Therefore, the study of encryption algorithm based on embedded system is of great theoretical and practical value.Besides, FPGA(Field Programmable Gate Array) and the development of the tool—EDA(Electronic Design Automation) offers us the opportunity to study new calculation methods. On the one hand, it is flexible and enlarging which is based on software. On the other hand, it is approach to the feature of ASIC(Application Specific Intergrated Circuits). Encrypt algorithm based on FPGA can change parameters, It has all features both software and hardware.This article gets close to the trend of encryption algorithm, which analyses deeply feature of embedded devices. With the deep study of FPGA, I put forward encryption algorithm based o LFSR and design on FPGA. The Encryption algorithm has strong compatibility of environment,few ROMs,single calculation. It is suitable for embedded devices such as monitor and audio communications in wireless network. It is proved to be practical that the calculation is of great practice by the analysis of password and theory and the outcomes of experiments.