0引言近年来,随着信息化和网络化程度的加深,信息安全问题也成为人们关注的焦点,人们在享受信息化带来便利的同时,也面临着信息失窃的威胁。如何在享受信息化带来的便利的同时,确保信息的存储和传输安全成为人们关注的热点。保障信息安全的技术措施包括硬件安全、系统安全、病毒防治、信息加密、信息隐藏等,其中信息加密技术由于简单有效而被广泛采用。虽然,信息的存储形式和信息类型多种多样,其内容、大小更是各不相同。但是,目前的信息主要还是以计算机文件的方式进行存储和传输。因此,研究数据加密传输系统具有重要的现实 0 Introduction In recent years, with the deepening of the degree of informatization and networking, the issue of information security has also become the focus of attention. While people enjoy the convenience of informationization, they also face the threat of information theft. How to enjoy the convenience brought by informationization, at the same time, to ensure the security of information storage and transmission becomes the focus of attention. Technical measures to ensure information security include hardware security, system security, virus prevention and control, information encryption, information hiding, etc. Among them, information encryption technology is widely adopted due to its simplicity and effectiveness. Although the form and type of information stored in a variety of different, its content, size is even more different. However, the current information is mainly stored and transmitted as computer files. Therefore, the study of data encryption transmission system has an important reality