数据加密在远程监控系统中的应用研究

Application and Research of a Date Encryption in Monitor System

寻呼发射机是无线寻呼系统中的关键设备之一,针对其可靠工作和安全运行问题,提出了一种专用远程监控系统,介绍了智能寻呼发射机监控系统中的系统组成和系统功能,并论述了系统的硬件设计方案,从地址码和遥控命令集的设计等方面分析了系统中遥控遥测的实现原理,并重点讨论了系统为保障数据安全而采用的 IDEA数据加密算法与 MD5报文鉴别等关键实现技术。现场测试表明,该监控系统对提高寻呼发射机运行的安全性和可靠性具有重要作用。

The paging transmitter is an important equipment in wireless paging system. To ensure reliable work and the safety of the paging transmitter, this paper offers a intelligent monitor system of the special purpose. This paper describes the work principle and the structures of hardware for intelligent monitor system., also analyzes the realization principle used for remote control and measurement from how to design the address codes and the remote control commands. In this paper, the key techniques of intelligent monitor system to ensure the security of data and system reliability such as IDEA (International Data Encryption Algorithm) cryptographic and decipher method, MD5(Message Digest 5) message authentication are illustrated here. Practical test verifies the validity of this intelligent monitor system in improving the security and the reliability of the paging transmitter.