Breaking a novel colour image encryption algorithm based on chaos

被引：0
作者：
Chengqing Li
Leo Yu Zhang
Rong Ou
Kwok-Wo Wong
Shi Shu
机构：
[1] Xiangtan University,College of Information Engineering
[2] Xiangtan University,School of Mathematics and Computational Science
[3] State Grid Electric Power Research Institute,Department of Electronic Engineering
[4] City University of Hong Kong,undefined
来源：
Nonlinear Dynamics | 2012年 / 70卷
关键词：
Image encryption; Chaos; Cryptanalysis; Chosen-plaintext attack;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Recently, a colour image encryption algorithm based on chaos was proposed by cascading two position permutation operations and one substitution operation, which are all determined by some pseudo-random number sequences generated by iterating the logistic map. This paper evaluates the security level of this encryption algorithm and finds that the position permutation-only part and the substitution part can be separately broken with only ⌈(log2(3MN))/8⌉ and 2 chosen plain-images, respectively, where MN is the size of the plain-image. The effectiveness of the proposed chosen-plaintext attack is supported by concise theoretical analyses, and is verified by experimental results.
引用
收藏
页码：2383 / 2388
页数：5
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