基于空域LSB的数字图像加密算法

为了弥补传统密码技术的不足,采用了新型的版权保护技术——数字水印.设计实现了一种基于空域的图像水印算法,提出了一种基于空域LSB算法的数字图像加密算法,对不同的值对应的图像点像素进行不同的加密,然后根据给定的随机整数寻找加密结果的存放位置.实验分析表明,该算法实现起来比较简单,且不可见性好,而且抵抗剪切和JPEG压缩的能力较强,算法的时间复杂度较低,加密效果较好,安全性较高.

Digita image encryption algorithm based on airspace LSB

For making up the shortage of the traditional password technical,this literary grace used a new copyright protection,that is the technique-numerical watermark.Design and carried out a calculate method according to the picture watermark in this empty area.And advanced the numerical portrait which according to the empty area LSB encrypts calculate way.The numerical portrait which puts forward a calculate way according to the empty area LSB encrypts calculate way to different value to should of the picture orders a pixel to carry on to encrypt differently.Then according to the given settle of the random integral look for to encrypt result of deposit position.Experiment and analysis testified that the calculate way's realization gets up more and in brief and the visibility is good and the holdout to cut and the ability to compress with JPEG become stronger,time complications of the calculate way is lower,encrypting result better,the safety is higher.