Analysis of the effects of scrambling and diffusion of logistic chaotic map on image encryption

Fangzheng Zhao; Chenghai Li; Chen Liu; Jie Zhang; Qingshuang Hu

doi:10.1117/12.2540017

14 August 2019 Analysis of the effects of scrambling and diffusion of logistic chaotic map on image encryption

Fangzheng Zhao, Chenghai Li, Chen Liu, Jie Zhang, Qingshuang Hu

Proceedings Volume 11179, Eleventh International Conference on Digital Image Processing (ICDIP 2019); 111790F (2019) https://doi.org/10.1117/12.2540017
Event: Eleventh International Conference on Digital Image Processing (ICDIP 2019), 2019, Guangzhou, China

Abstract

The image encryption algorithm based on chaotic system has been widely used at present. For this kind of algorithm, the encryption mechanism of "scrambling - diffusion" and multiple iterations are mainly adopted. In this paper, the common one-dimensional logistic chaotic mapping is taken as an example to analyze the influence of "scrambling - diffusion" and the number of iterations on the encryption effect. The simulation results show that, when only the chaotic system is used to complete the encryption operation, except for the key space, the contribution of "scrambling - diffusion" and single diffusion operation to the image encryption effect is basically the same, and the number of iterations has no significant effect on the encryption. When a "scrambling - diffusion" mechanism and multiple iterations are employed, the encryption effect may be enhanced by combining other cryptographic operations.

Citation Download Citation

Fangzheng Zhao, Chenghai Li, Chen Liu, Jie Zhang, and Qingshuang Hu "Analysis of the effects of scrambling and diffusion of logistic chaotic map on image encryption", Proc. SPIE 11179, Eleventh International Conference on Digital Image Processing (ICDIP 2019), 111790F (14 August 2019); https://doi.org/10.1117/12.2540017

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KEYWORDS

Image encryption

Diffusion

Complex systems

Image compression

Image processing

Chaos

Image information entropy

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