MD5加密算法改进及其特征码在杀毒软件中的应用

摘要

文章分析了MD5算法发展、危机、碰撞分析并加入"盐值"对算法做了改进，然后给出了其C++的具体实现算法；分析MD5特征码的特点构建了特征库配置文件，用VC实现了基于特征码的杀毒软件，此软件能根据文件特征码（MD5值）成功删除可疑文件。%The paper analyzed the development, crisis and the collision of the MD5 algorithm,by adding the"salt value", the algorithm has been improved. And then gived the concrete implementation of the algorithm with c++language;Analysis of the characteristics of the MD5 signature feature ,database configuration file is constructed, using VC implementation anti-virus software based on signature feature, the software can according to the file signature (MD5 value) successfully delete suspicious files.