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Entropy 2019, 21(3), 319; https://doi.org/10.3390/e21030319

Image Encryption Based on Pixel-Level Diffusion with Dynamic Filtering and DNA-Level Permutation with 3D Latin Cubes

1
School of Economic Information Engineering, Southwestern University of Finance and Economics, Chengdu 611130, China
2
College of Computer Science, Sichuan University, Chengdu 610064, China
3
College of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China
*
Authors to whom correspondence should be addressed.
Received: 12 March 2019 / Revised: 19 March 2019 / Accepted: 21 March 2019 / Published: 24 March 2019
(This article belongs to the Special Issue Entropy in Image Analysis)
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Abstract

Image encryption is one of the essential tasks in image security. In this paper, we propose a novel approach that integrates a hyperchaotic system, pixel-level Dynamic Filtering, DNA computing, and operations on 3D Latin Cubes, namely DFDLC, for image encryption. Specifically, the approach consists of five stages: (1) a newly proposed 5D hyperchaotic system with two positive Lyapunov exponents is applied to generate a pseudorandom sequence; (2) for each pixel in an image, a filtering operation with different templates called dynamic filtering is conducted to diffuse the image; (3) DNA encoding is applied to the diffused image and then the DNA-level image is transformed into several 3D DNA-level cubes; (4) Latin cube is operated on each DNA-level cube; and (5) all the DNA cubes are integrated and decoded to a 2D cipher image. Extensive experiments are conducted on public testing images, and the results show that the proposed DFDLC can achieve state-of-the-art results in terms of several evaluation criteria. View Full-Text
Keywords: image encryption; dynamic filtering; DNA computing; 3D Latin cube; permutation; diffusion image encryption; dynamic filtering; DNA computing; 3D Latin cube; permutation; diffusion
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Li, T.; Shi, J.; Li, X.; Wu, J.; Pan, F. Image Encryption Based on Pixel-Level Diffusion with Dynamic Filtering and DNA-Level Permutation with 3D Latin Cubes. Entropy 2019, 21, 319.

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