An Image Encryption Algorithm Based on Chaos

Jin, Yongxian; Guan, Yi-Sheng

doi:10.1007/978-3-642-23753-9_79

Cited by 4 publications

(2 citation statements)

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“…NPCR refers to the change rate of the number of pixels and UACI refers to the uniform average change intensity. e calculation process of the above two indexes is shown in formula (16). To measure the performance of the proposed encryption algorithm from a more secure perspective, Wu et al proposed a comprehensive study of randomness tests including NPCR and UACI, and they focused on the theoretical critical NPCR and UACI values for encrypted images of different sizes.…”

Section: Information Entropy and Local Entropymentioning

confidence: 99%

“…Chai et al [ 15 ] presents a color image cryptosystem based on dynamic DNA encryption and chaos. Based on the logistic map, Jin et al [ 16 ] proposed an encryption algorithm, which combines the pre-encrypted image with the original gray value in disorder. Tong and Liu [ 17 ] proposed an encryption algorithm based on high-dimensional dynamic multiple chaotic maps, which combined with cyclic displacement to produce a faster avalanche effect and excellent encryption effect.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hybrid Encryption Algorithm Based on Gray Curve and Josephus Permutation

Niu

Zhou

Zhang

et al. 2022

Computational Intelligence and Neuroscience

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This paper proposes a new image encryption algorithm based on chaos map systems, hash algorithm, and Josephus permutation. The algorithm consists of chaos initialization, pixel position permutation, and pixel information diffusion. The algorithm’s initialization is generated by the original image, which has a high sensitivity to the initial value. The permutation step length is composed of Josephus permutation and gray curve permutation, which completely disturbs the pixel distribution. The diffusion process is composed of cross operation and ciphertext feedback, which breaks the strong correlation between pixels. The simulation results of the encryption algorithm are used to analyze its information entropy, the correlation between elements, and other indicators. The ciphertext image is attacked in several ways, and we analyzed its defense ability. Simulation results show that the algorithm can effectively encrypt image information and has a good defense against various attacks.

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Section: Information Entropy and Local Entropymentioning

confidence: 99%