针对现有灰度图像加密方法的不可逆性,通过引入由简单混沌映射产生的随机矩阵降低了计算复杂度,同时仍保持很好的有效性和安全性。提出的方法成功地解决了现有灰度图像加密方法的不可逆问题,并且该方法能够抵抗Hermassi等人提出的攻击方法。
This paper introduced simple random matrix which produced by the chaotic mapping and still kept great efficacy and safety. It solved the problem of the irreversibility of exsiting image encryption method successfully. And,the algorithm can resist attack by Hermassi.