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Image-dependent, generalized Arnold map, piece-wise linear chaotic map, ergodicity, permutation, diffusion
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.
Ruisong Ye, Wenhua Guo, "An Image Encryption Scheme Based on Chaotic Systems with Changeable Parameters", International Journal of Computer Network and Information Security(IJCNIS), vol.6, no.4, pp.37-45, 2014. DOI:10.5815/ijcnis.2014.04.05
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