Presentation + Paper
15 May 2017 2D non-separable linear canonical transform (2D-NS-LCT) based cryptography
Author Affiliations +
Abstract
The 2D non-separable linear canonical transform (2D-NS-LCT) can describe a variety of paraxial optical systems. Digital algorithms to numerically evaluate the 2D-NS-LCTs are not only important in modeling the light field propagations but also of interest in various signal processing based applications, for instance optical encryption. Therefore, in this paper, for the first time, a 2D-NS-LCT based optical Double-random- Phase-Encryption (DRPE) system is proposed which offers encrypting information in multiple degrees of freedom. Compared with the traditional systems, i.e. (i) Fourier transform (FT); (ii) Fresnel transform (FST); (iii) Fractional Fourier transform (FRT); and (iv) Linear Canonical transform (LCT), based DRPE systems, the proposed system is more secure and robust as it encrypts the data with more degrees of freedom with an augmented key-space.
Conference Presentation
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Liang Zhao, Inbarasan Muniraj, John J. Healy, Ra'ed Malallah, Xiao-Guang Cui, James P. Ryle, and John T. Sheridan "2D non-separable linear canonical transform (2D-NS-LCT) based cryptography", Proc. SPIE 10233, Holography: Advances and Modern Trends V, 102331B (15 May 2017); https://doi.org/10.1117/12.2265863
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CITATIONS
Cited by 4 scholarly publications.
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KEYWORDS
Image encryption

Fourier transforms

Optical image encryption

Computer security

Information security

Cryptography

Fractional fourier transform

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