A novel encryption scheme for high-contrast image data in the Fresnelet domain

Nargis Bibi, Shabieh Farwa, Nazeer Muhammad, Adnan Jahngir and Muhammad Usman

PLOS ONE, 2018, vol. 13, issue 4, 1-15

Abstract: In this paper, a unique and more distinctive encryption algorithm is proposed. This is based on the complexity of highly nonlinear S box in Flesnelet domain. The nonlinear pattern is transformed further to enhance the confusion in the dummy data using Fresnelet technique. The security level of the encrypted image boosts using the algebra of Galois field in Fresnelet domain. At first level, the Fresnelet transform is used to propagate the given information with desired wavelength at specified distance. It decomposes given secret data into four complex subbands. These complex sub-bands are separated into two components of real subband data and imaginary subband data. At second level, the net subband data, produced at the first level, is deteriorated to non-linear diffused pattern using the unique S-box defined on the Galois field F 2 8. In the diffusion process, the permuted image is substituted via dynamic algebraic S-box substitution. We prove through various analysis techniques that the proposed scheme enhances the cipher security level, extensively.

Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0194343

DOI: 10.1371/journal.pone.0194343

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