摘要
图像置乱加密的目的是实现图像的安全传输或保存,现在许多算法都认为自身具有很高的安全性,可以抵抗多种攻击。置乱度就是衡量图像置乱程度的客观方法,置乱度越高则该算法就越有效。将衡量图像置乱程度的方法分为五大类,并分别加以系统论述,分析了各种方法的优缺点。
Image scrambling is a common method in information holding and safety transferring. Now many methods think they are of high safeties and can resist kinds of the attacks. Image scrambling degree is a method to evaluate the advantage and disadvantage of a image scrambling algorithm. The higher the image scrambling degree is, the more efficient the image scrambling algorithm is. Here various image scrambling algorithms are summarized into five classes. They are introduced in this paper and their advantages are illuminated.
出处
《信息技术》
2008年第6期164-165,168,共3页
Information Technology
关键词
图像加密
图像置乱
图像置乱度
image encryption
image scrambling
image scrambling degree
