图像加密技术综述

随着Internet技术的发展，人们对通信隐私和信息安全技术越来越重视，综述了图像图像加密技术的进展状况，对其中的若干图像加密技术，如图像像素置乱技术，基于秘密分割和秘密共享的图像加密技术，基于现代密码学体制的图像加密技术以及基于混沌动力学体制的图像加密技术原理，特点与算法实现都做了阐述，并对这些图像加密技术做了分析与比较，指出了它们各自的优缺点和应用局限性，并讨认了今后的发展方向。

IMAGE ENCRYPTION TECHNIQUES: A SURVEY

With the development of the Internet technique, communication privacy and the information security are attracting a lot of attention recently. In this paper, the development of image encryption techniques is surveyed. Some techniques, such as pixel permutation technique, image secret segmentation technique, image secret sharing technique, and modern cryptography mechanism-based and chaotic dynamics-based image encryption techniques, are illustrated. The principles and characteristics of the corresponding technique are clarified; the analyses and comparisons are given; and the advantages, disadvantages and applied limitations are pointed out. Finally, the future direction in this field is discussed.