摘要： 现有自适应图像加密算法可以抵抗已知明文攻击，其单轮加密速度很快，但安全性和整体加密速度较低。基于自适应排列提出一种新的快速图像加密算法，在确保加密操作简单高效的前提下，改变加密前后图像的像素分布。实验结果表明，该算法性能优于其他同类算法。

关键词: 图像加密, 自适应, 排列, 密码学

Abstract: Existing self-adaptive image encryption algorithm is resistant to known plaintext attacks and with high speed of single round encryption, but its security and speed of whole round encryption is low. This paper proposes a new fast image encryption algorithm based on self-adaptive permutation. This algorithm insures the simpleness and high efficiency of encryption operation, and changes the pixel distribution of encrypted image compared with that of original image. Experimental results show that this algorithm has better performance than other kindred algorithms.

Key words: image encryption, self-adaptive, permutation, cryptography

中图分类号: 

• TP309.2