期刊名称：International Journal of Computer Trends and Technology
电子版ISSN：2231-2803
出版年度：2014
卷号：15
期号：4
页码：174-185
DOI：10.14445/22312803/IJCTT-V15P137
出版社：Seventh Sense Research Group
摘要：Recently, a great number of chaosbased image encryption algorithms have been proposed. But most of them are either deficient in security or complicated. In this paper, we propose a permutationsubstitution image encryption scheme based on generalized Arnold map. Only one round of permutation and one round of substitution are performed to get the desirable results. The generalized chaotic Arnold maps are applied to generate the pseudorandom sequences for the permutation and substitution. The permutation and substitution are both performed rowbyrow/columnbycolumn instead of pixelbypixel to increase the speed of encryption. The security and performance of the proposed scheme have been analyzed, including statistical analysis, key sensitivity analysis, key space analysis, differential analysis, encryption rate analysis etc. All the experimental results suggest that the proposed image encryption scheme is efficient and highly secure.
