基于水印加密技术的在线交互系统安全日志的设计与实现

The Design and Implementation of the Log System for on-line Interactive Based on Watermark Tecnnology

随着互联网的飞速发展，在线各服已经成为了互联网网站的一个必不可少的功能。但是随着系统协同浏览、远程协助等功能的增强，操作的安全性日渐成为了突出的问题。本文设计了一个基于Harris校准和DCT域的抗几何攻击水印算法，将水印信息嵌入到日志系统中，实现了日志系统的唯一性的和不可修改性的技术验证，能够较好的为从法律角度上保障双方对于日志内容的合法性和唯一性提供了保障。最后描述了系统的实现方法，将设计思想加以应用。

With the rapid development of the Internet, online customer service already becomes an essential feature for Web System. However, the emerging function, such as co-browsing, remote assistance, gradually brings out new security problem. This paper designed a watermarking algorithm based on Harris and the DCT, which embedded the watermark information into the log s; stem to ensure the uniqueness cf the log system. It also can provide as the technology evidence for log content. Finally, this paper also gives out how to realize that algorithm in practical system.