Image Encryption Based on Chaotic Sub-Block Scrambling and Chaotic Digit Selection Diffusion

A novel color image encryption algorithm based on a cross 2D hyperchaotic map is proposed in this paper. The cross 2D hyperchaotic map is constructed using one nonlinear function and two chaotic maps with cross structure. Chaotic behaviors are illustrated using bifurcation diagrams, Lyapunov exponent spectra and phase portraits, etc. In the color image encryption algorithm, the keys are generated using hash function SHA-512 and the information of plain color image. First, the color plain image is converted to a combined bit-level matrix and permuted by the chaos based row and column combined cycle shift scrambling method. Then the scrambled integer matrix is diffused according to the selecting sequence which depends on the chaotic sequence. Last, the cipher color image is obtained by decomposed the diffused matrix. Simulation results show that the algorithm can encrypt the color image effectively and has good security.

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“…In recent years, many chaos-based image encryption algorithms have been developed [11][12][13][14][15][16][17][18][19][20] .…”

Section: Introductionmentioning

confidence: 99%

Color image encryption based on cross 2D hyperchaotic map using combined cycle shift scrambling and selecting diffusion

et al. 2021

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“…Lots of images travel over the Internet due to the shareability and the openness of network transmission, which may threaten the security of private image information. To tackle this problem, various image encryption algorithms have been put forward successively [1][2][3][4]. e main purpose of these algorithms is to encrypt the serviceable image information into a noise-like one.…”

Section: Introductionmentioning

confidence: 99%

Image Encryption Scheme Based on Block Scrambling, Closed-Loop Diffusion, and DNA Molecular Mutation

Gong

Wan

et al. 2021

Security and Communication Networks

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A new image encryption scheme is proposed with a combination of block scrambling, closed-loop diffusion, and DNA molecular mutation. The new chaotic block scrambling mechanism is put forward to replace the traditional swapping rule by combining the rectangular-ambulatory-plane cyclic shift with the bidirectional random disorganization. The closed-loop diffusion strategy is designed to form a feedback system, which improves the anti-interference capacity of the algorithm. To further destroy the blocks characteristics and eliminate the correlations among adjacent blocks, two efficient methods of DNA molecular mutation are adopted in the mutation stage. Moreover, the proposed algorithm possesses a large key space and the keys are highly related with the plaintext image. Experimental results demonstrate that the suggested image encryption strategy is practicable and has strong ability against a variety of common attacks.

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“…For a color image, it has three elements of R, G, and B, so it contains more information than grayscale images, its original features, large amount of data, high redundancy, high correlation between pixels. In order to protect image information, major contributions have been made in the fields of steganography 1 , 2 , and encryption 3 – 5 . In recent years, chaos has some ideal cryptographic characteristics such as initial value sensitivity and pseudo-randomness, which makes the chaotic encryption scheme widely used 6 – 17 .…”

Section: Introductionmentioning

confidence: 99%

Color image encryption based on chaotic compressed sensing and two-dimensional fractional Fourier transform

Wang

2020

Sci Rep

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Combining the advantages of structured random measurement matrix and chaotic structure, this paper introduces a color image encryption algorithm based on a structural chaotic measurement matrix and random phase mask. The Chebyshev chaotic sequence is used in the algorithm to generate the flip permutation matrix, the sampling subset and the chaotic cyclic matrix for constructing the structure perceptual matrix and the random phase mask. The original image is compressed and encrypted simultaneously by compressed sensing, and re-encrypted by two-dimensional fractional Fourier transform. Simulation experiments show the effectiveness and reliability of the algorithm.

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Image Encryption Based on Chaotic Sub-Block Scrambling and Chaotic Digit Selection Diffusion

Cited by 76 publications

References 38 publications

Color image encryption based on cross 2D hyperchaotic map using combined cycle shift scrambling and selecting diffusion

Color image encryption based on cross 2D hyperchaotic map using combined cycle shift scrambling and selecting diffusion

Image Encryption Scheme Based on Block Scrambling, Closed-Loop Diffusion, and DNA Molecular Mutation

Color image encryption based on chaotic compressed sensing and two-dimensional fractional Fourier transform

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