A symmetric image encryption algorithm based on mixed linear–nonlinear coupled map lattice

We propose a new image encryption algorithm based on the spatiotemporal chaos of the mixed linear–nonlinear coupled map lattices. This spatiotemporal chaotic system has more outstanding cryptography features in dynamics than the logistic map or the system of coupled map lattices does. In the propose...

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Bibliographic Details
Published inInformation sciences Vol. 273; pp. 329 - 351
Main Authors Zhang, Ying-Qian, Wang, Xing-Yuan
Format Journal Article
LanguageEnglish
Published Elsevier Inc 20.07.2014
Subjects
Bit-level permutation
Coupled map lattices
Image encryption
Spatiotemporal chaos
Image encryption
Bit-level permutation
Spatiotemporal chaos
Coupled map lattices
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Summary:We propose a new image encryption algorithm based on the spatiotemporal chaos of the mixed linear–nonlinear coupled map lattices. This spatiotemporal chaotic system has more outstanding cryptography features in dynamics than the logistic map or the system of coupled map lattices does. In the proposed image encryption, we employ the strategy of bit-level pixel permutation which enables the lower bit planes and higher bit planes of pixels permute mutually without any extra storage space. Simulations have been carried out and the results demonstrate the superior security and high efficiency of the proposed algorithm.
ISSN:0020-0255
1872-6291
DOI:10.1016/j.ins.2014.02.156