Journal
OPTICS AND LASERS IN ENGINEERING
Volume 103, Issue -, Pages 9-23Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.optlaseng.2017.11.005
Keywords
Discrete fractional Fourier transform; Random transforms; Color image encryption; Chaotic maps; Phase retrieval; Chaotic diffusion; Spectral decomposition
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The recent tremendous proliferation of color imaging applications has been accompanied by growing research in data encryption to secure color images against adversary attacks. While recent color image encryption techniques perform reasonably well, they still exhibit vulnerabilities and deficiencies in terms of statistical security measures due to image data redundancy and inherent weaknesses. This paper proposes two encryption algorithms that largely treat these deficiencies and boost the security strength through novel integration of the random fractional Fourier transforms, phase retrieval algorithms, as well as chaotic scrambling and diffusion. We show through detailed experiments and statistical analysis that the proposed enhancements significantly improve security measures and immunity to attacks. (C) 2017 Elsevier Ltd. All rights reserved.
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