A Nature Inspired Color Image Encryption Technique to Protect the Satellite Images

A color image encryption algorithm based on chaotic maps is proposed in this paper. The algorithm is based on two bio-operations: crossover and mutation. To enhance the robustness against differential attacks, the mutated image is subjected to scrambling process operated on the pixel values of the image using a random sequence. Experimental results show that the proposed algorithm is capable of generating encrypted images with uniform distribution of the pixel values and very low correlation coefficients of adjacent pixels. It is very sensitive to any change in the secret key values. The results show that the algorithm is robust to statistical and differential attacks.

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A Novel Color Image Encryption Algorithm Based on Hyperchaotic System and Permutation-Diffusion Architecture

International Journal of Bifurcation and Chaos ◽

10.1142/s0218127419501153 ◽

2019 ◽

Vol 29 (09) ◽

pp. 1950115 ◽

Cited By ~ 28

Author(s):

Guangfeng Cheng ◽

Chunhua Wang ◽

Hua Chen

Keyword(s):

Image Encryption ◽

Color Image ◽

Encryption Algorithm ◽

Hyperchaotic System ◽

Color Image Encryption ◽

Key Space ◽

Encryption Algorithms ◽

Block Permutation ◽

Encrypted Images ◽

Differential Attacks

In recent years, scholars studied and proposed some secure color image encryption algorithms. However, the majority of the published algorithms encrypted red, green and blue (called [Formula: see text], [Formula: see text], [Formula: see text] for short) components independently. In the paper, we propose a color image encryption scheme based on hyperchaotic system and permutation-diffusion architecture. The encryption algorithm utilizes a block permutation which is realized by mixing [Formula: see text], [Formula: see text], [Formula: see text] components to strengthen the dependence of each component. Besides, it can reduce time consumption. Then, the key streams generated by the hyperchaotic system are exploited to diffuse the pixels, the three components affect each other again. And in the diffusion process, we can get two totally different encrypted images even though we change the last pixel because the [Formula: see text] component is diffused in reverse order. The experimental results reveal that our algorithm possesses better abilities of resisting statistical attacks and differential attacks, larger key space, closer information entropy to 8, and faster encryption speed compared with other chaos-based color image encryption algorithms.

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A Novel Color Image Encryption Algorithm Based on Hyperchaotic Maps and Mitochondrial DNA Sequences

Entropy ◽

10.3390/e22020158 ◽

2020 ◽

Vol 22 (2) ◽

pp. 158

Author(s):

Heba G. Mohamed ◽

Dalia H. ElKamchouchi ◽

Karim H. Moussa

Keyword(s):

Image Encryption ◽

Dna Sequences ◽

Color Image ◽

Chaotic Map ◽

Color Image Encryption ◽

Plain Text ◽

Differential Attacks ◽

Image Encryption Algorithm ◽

Multimedia Encryption ◽

Human Mitochondrial Genome

Multimedia encryption innovation is one of the primary ways of securely and privately guaranteeing the security of media transmission. There are many advantages when utilizing the attributes of chaos, for example, arbitrariness, consistency, ergodicity, and initial condition affectability, for any covert multimedia transmission. Additionally, many more benefits can be introduced with the exceptional space compliance, unique information, and processing capability of real mitochondrial deoxyribonucleic acid (mtDNA). In this article, color image encryption employs a confusion process based on a hybrid chaotic map, first to split each channel of color images into n-clusters; then to create global shuffling over the whole image; and finally, to apply intrapixel shuffling in each cluster, which results in very disordered pixels in the encrypted image. Then, it utilizes the rationale of human mitochondrial genome mtDNA to diffuse the previously confused pixel values. Hypothetical examination and trial results demonstrate that the anticipated scheme exhibits outstanding encryption, as well as successfully opposes chosen/known plain text, statistical, and differential attacks.

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