加密
位(键)
排列(音乐)
计算机科学
混乱的
理论计算机科学
数学
密码学
混沌(操作系统)
图像(数学)
方案(数学)
算法
明文
分组密码
多重加密
对称密钥算法
概率加密
密码
人工智能
计算机安全
公钥密码术
物理
数学分析
声学
作者
Zhiliang Zhu,Wei Zhang,Kwok-Wo Wong,Hai Yu
标识
DOI:10.1016/j.ins.2010.11.009
摘要
In recent years, a variety of chaos-based digital image encryption algorithms have been suggested. Most of these algorithms implement permutations and diffusions at the pixel level by considering the pixel as the smallest (atomic) element of an image. In fact, a permutation at the bit level not only changes the position of the pixel but also alters its value. Here we propose an image cryptosystem employing the Arnold cat map for bit-level permutation and the logistic map for diffusion. Simulations have been carried out and analyzed in detail, demonstrating the superior security and high efficiency of our cryptosystem.
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