1引言随着网络技术与信息技术的普及、发展与应用,全球信息化已经成为当今社会发展的主要趋势之一。同样,我国交通运输行业也已经全面进入信息化的历史新阶段。但是,伴随着交通业务量的激增,信息系统所承担的压力及挑战也越来越大,而信息安全压力表现的尤为明显,一些不法分子为了不正当利益,篡改程序代码、入侵交通信息系统等,给交通安全带来了极大影响。 1 Introduction With the popularization, development and application of network technology and information technology, global informationization has become one of the major trends in today’s society. Similarly, China’s transportation industry has also entered a new historical stage of informationization. However, with the surge of traffic volume, the pressure and challenge of information system are also increasing, and the pressure of information security is especially obvious. Some criminals distort the program code and invade traffic information system for improper benefits , Has brought great influence on traffic safety.