基于m序列整数调制和置乱的图像加密算法

Image encryption algorithm based on m-sequence integer modulation and image scrambling

分析了m序列产生原理,分别提出了图像位置置乱的“m序列变换”方法和图像像素值替代的“m序列整数调制”方法,研究了m序列变换的图像加密效果。在此基础上,利用混沌图像的混沌特性,提出了一种实用的图像加密算法。最后,分析了本文算法的密钥空间和安全性,并给出了应用本文算法的图像加密结果。

After analyzing the m-sequence generating principle, a new image position scrambling method named m-sequence transform and a new image value of pixels substitution method named m-sequence integer modulation were presented respectively. Encrypted effect of m-sequence transform was also studied. And based on those, a practical image encryption algorithm was put forward according to the characteristics of chaotic images. Then key spaces and security of the proposed algorithm were analyzed. Finally, the experimental results using this algorithm were shown in this paper.