期刊名称：International Journal of Network Security & Its Applications
印刷版ISSN：0975-2307
电子版ISSN：0974-9330
出版年度：2017
卷号：9
期号：4
页码：57
DOI：10.5121/ijnsa.2017.9405
出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：In this paper, a chaos-based image encryption scheme with half-pixel-level interchange permutationstrategy and plain-image dependence is proposed. The proposed image encryption scheme consists of aconfusion process and a diffusion process. In the confusion process, a pixel-swapping operation betweenhigher bit planes and lower bit planes is employed to replace the traditional confusion operation. The halfpixel-level interchange permutation strategy between the higher 4-bit plane part and the lower 4-bit planepart not only improves the conventional permutation efficiency within the plain-image, but also changes allthe pixel gray values. The system parameters of generalized Arnold map applied for the permutationoperation relies on the plain-image content and consequently can resist chosen-plaintext and knownplaintextattacks effectively. To enhance the security of the proposed image encryption, one multimodalskew tent map is utilized to generate pseudo-random gray value sequence for diffusion operation.Simulations have been carried out thoroughly with comparisons with some other existing image encryptionschemes. The experimental results demonstrate that the proposed image encryption scheme is highly securethanks to its large key space and efficient permutation-diffusion operations.
