摘要
针对数字图像的特点,分析了传统加密算法不适用的原因,陈述了数字图像加密的现状,对基于空间域的像素置乱、基于混沌的加密、基于变换域的加密、基于秘密分割与秘密共享的加密、基于神经网络和元胞自动机的加密以及基于盲源分离的加密进行了详细描述,并对它们的特点进行了分析比较。最后,举例分析了大量典型的加密算法,指出了它们的不足,并探讨了进一步的研究方向。
According to the feature of digital image,the reason why traditional cipher algorithms are not applicable was analyzed,and the development of digital image encryption was surveyed.Some techniques,such as pixel permutation in space domain,encryption based on chaos,encryption in transform domain,image secret segmentation and sharing,encryption based on neutral network and cellular automata,encryption based on blind source separation,were illustrated,and the corresponding characteristics were analyzed and compared.At last,a large number of typical encryption algorithms were analyzed in detail to expose their weakness,and the future research direction was discussed.
出处
《计算机科学》
CSCD
北大核心
2012年第12期6-9,24,共5页
Computer Science
基金
装备预研重点基金(9140A04040308DZ1002)资助
关键词
图像加密
置乱
混沌
空间域
变换域
Image encryption
Scramble
Chaos
Space domain
Transform domain
