This paper introduces the present situation of the researches on the digital image watermark, probes into the application of the wavelet theory in the watermark system, and connecting with the image compression standard jpeg2000 in the new era, advances an embedding and detecting algorithm and makes the simulation experiment 介绍了图像数字水印的研究现状,探讨了小波理论在水印系统中的应用,结合新时期的图像压缩标准jpeg2000,提出一种水印的嵌入及检测算法并进行了仿真实验。
The paper introduces the definition of worm according to the history of worm, analyses the worm ’ s function module, attacking mode, scanning regulation and the typical worm-sasser, then brings forward a worm-detecting algorithm based on packet statistics, by analyzing the detecting algorithm in existence 本文结合蠕虫发展的历史提出了蠕虫的定义,分析了蠕虫的功能结构,攻击手段,扫描策略,并对sasser蠕虫进行了剖析。简述了现有的蠕虫检测算法,并分析了其优缺点,提出了基于数据包统计的蠕虫检测算法。
The paper introduces the definition of worm according to the history of worm, analyses the worm ’ s function module, attacking mode, scanning regulation and the typical worm-sasser, then brings forward a worm-detecting algorithm based on packet statistics, by analyzing the detecting algorithm in existence 本文结合蠕虫发展的历史提出了蠕虫的定义,分析了蠕虫的功能结构,攻击手段,扫描策略,并对sasser蠕虫进行了剖析。简述了现有的蠕虫检测算法,并分析了其优缺点,提出了基于数据包统计的蠕虫检测算法。