Visual Cryptography (VC) with non-expanded shadow images: Hilbert-curve approach

Lin, Sen-Jen; Lin, Ja‐Chen; Fang, Wen‐Pinn

doi:10.1109/isi.2008.4565080

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…In [11], Sura has proposed to split the secret image into four equally blocks, each block is rotated 90 degrees in the direction of rotation and then, numerous chaotic maps are used for confusion and diffusion with each block. The authors in [20] have shuffled the image with Zaslavskii and Hilbert Space Filling Curve algorithms [7], which consists of the confusion process. An encryption approach using the principle of the Josephus for confusion and the filtering technology for diffusion is given in [8].…”

Section: Related Workmentioning

confidence: 99%

“…However, these traditional encryption methods remain limited in front of the current image encryption requirements [6]. In addition, some authors have proposed to realize confusion and diffusion approaches based on other techniques such as Zaslavskii and Hilbert Space Filling Curve algorithms [7] or the principle of the Josephus and the filtering technology [8]. With the introduction of chaos theory in cryptography, the chaotic encryption systems become the best solution to enhance security level of image information.…”

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confidence: 99%

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An image encryption based on confusion-diffusion using two chaotic maps and Frobenius endomorphism

Hilmi,

Mezroui,

Oualkadi

2023

SAIEE Afr. Res. J.

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The chaotic map including 2D-Henon and Tent maps, have been widely used in modern cryptography, due to its high level of security and low cost of computation, compared to traditional algorithms. This study suggests a method for sharing images that are dependent on both confusion and diffusion for securing a gray-scale image. First, a new perturbation method of pixels based on Henon map to generate the permutation matrix for scrambling the plain image is proposed. The confused image should be encrypted, in which we combine the Frobenius endomorphism and Tent chaotic map to generate a key encryption. Using the eXclusive-OR operation, the substitution process is realized between the key encryption and confused image. The simulation results of the proposed scheme maintain a lossless encryption quality, and the security analysis, which includes differential attack, entropy, correlation coefficient, and histogram analysis illustrate that the proposed approach reveals a high performance.

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