0引言在这个信息化呈爆炸性的时代里,人们需要处理的数据与日俱增,且越来越重要,而传统的信息处理方式已经很难满足现代社会发展的需求,为了更好地满足信息发展的需要,计算机网络得到了广泛的应用。计算机网络的出现有效地提高了信息处理效率,节省了人们的时间。但是在计算机网络发展的同时,其安全 0 Introduction In this explosive era of information, people need to deal with the data growing, and more and more important, and the traditional way of information processing has been difficult to meet the needs of the development of modern society, in order to better meet the needs of information development , Computer network has been widely used. The advent of computer networks has effectively improved the efficiency of information processing and saved people’s time. However, the development of computer networks at the same time, its security