Color image encryption scheme based on 4-weighted fractional Fourier transform

Keshari, Sudhir; Modani, S. G.

doi:10.1117/1.jei.21.3.033018

Cited by 8 publications

(2 citation statements)

References 21 publications

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“…In fact, the nonlinearity of the AES box is superior to data encryption standard (DES) and triple-DES boxes. 11 Also, there are encryptions for color images using the transformed Fourier, 12 the gyrator and Arnold transforms. 13 However, in these two latest investigations, the specific algorithm complexity is not shown.…”

Section: Introductionmentioning

confidence: 99%

Cipher image damage and decisions in real time

Silva-Garcia

Flores-Carapia

Rentería-Márquez

et al. 2015

J. Electron. Imaging

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Section: Introductionmentioning

confidence: 99%

Cipher image damage and decisions in real time

Silva-Garcia

Flores-Carapia

Rentería-Márquez

et al. 2015

J. Electron. Imaging

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“…The chosen-plaintext attacks as linear [8] or differential [9] are not addressed. In addition, there is a research of color image encryption [10], where the set size of the keys is not specified. Also, there are investigations in optics [11], [12], [13] where the number of keys is also Manuscript received on May 11, 2015, accepted for publication on July 22, 2015, published on October 15, 2015.…”

Section: Introductionmentioning

confidence: 99%

Cipher Image Damage: An Application of Filters

et al. 2015

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Abstract-In this paper, color images are encrypted and subsequently damage occlusion is made to the encrypted figures, with different sizes; the intention is to simulate an attack. In this research, two aspects are discussed, namely: the first is to encrypt images with quality; that is, the figures encrypted pass randomness tests proposed in this paper. The second aspect deals with the problem of recovering the encrypted figure information when it has been damaged. To retrieve information from encrypted images, the enryption of images is carried out in two steps: in the first a permutation is applied to the entire image and the second uses the AES cryptosystem with variable permutations. To perform this task an algorithm is used that utilizes the pi number to generate the permutations. To improve the sharpness of the deciphered figures with damage two filters are applied; median and average. To measure the degree of improvement in the damaged images two tests are proposed; the first is the correlation coefficient between adjacent pixels in the horizontal, vertical and diagonal directions. The second is based on the information entropy.Index Terms-AES with variable permutations, goodness-offit test, fourier transform, correlation, entropy of information, median and mean filters.

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