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International Journal of Computer Network and Information Security(IJCNIS)

ISSN: 2074-9090 (Print), ISSN: 2074-9104 (Online)

Published By: MECS Press

IJCNIS Vol.6, No.4, Mar. 2014

An Image Encryption Scheme Based on Chaotic Systems with Changeable Parameters

Full Text (PDF, 1089KB), PP.37-45


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Author(s)

Ruisong Ye, Wenhua Guo

Index Terms

Image-dependent;generalized Arnold map;piece-wise linear chaotic map;ergodicity;permutation;diffusion

Abstract

This paper proposes an image encryption scheme based on chaotic system with changeable parameters depending on plain-image. A generalized Arnold map, whose control parameters are changeable and image-dependent during the iteration procedure, is utilized to generate chaotic orbits applied to permute the pixel positions. A diffusion function is also designed to realize the diffusion effect by piece-wise linear chaotic map. In both the permutation process and the diffusion process, the keystreams generated by chaotic maps are all strongly dependent on plain-image, and thereby can improve the encryption security efficiently. The major merits of the proposed image encryption scheme include a huge key space, good statistical nature resisting statistical analysis attack, differential attack, and good resistance against known-plaintext attack and chosen-plaintext attack, etc. Experimental results have been carried out with detailed analysis to show that the proposed scheme can be a potential candidate for practical image encryption.

Cite This Paper

Ruisong Ye, Wenhua Guo,"An Image Encryption Scheme Based on Chaotic Systems with Changeable Parameters", IJCNIS, vol.6, no.4, pp.37-45, 2014. DOI: 10.5815/ijcnis.2014.04.05

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