Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.optcom.2012.09.014
Title: Security-enhanced interference-based optical image encryption
Authors: Chen, W. 
Chen, X. 
Keywords: Fractional fourier transform
Optical image encryption
Optical interference
Security enhancement
Issue Date: 1-Jan-2013
Source: Chen, W., Chen, X. (2013-01-01). Security-enhanced interference-based optical image encryption. Optics Communications 286 (1) : 123-129. ScholarBank@NUS Repository. https://doi.org/10.1016/j.optcom.2012.09.014
Abstract: Interference-based optical image encryption has triggered much current attention due to its marked advantages, such as non-iterative operation. Although interference-based optical image encryption is an effective approach, cryptosystem security is still a great concern from a cryptanalysis point of view and higher security is always desirable. In this paper, we propose a novel method to enhance the security for conventional interference-based optical image encryption in the fractional Fourier transform (FrFT) domain. A series of random and fixed phase-only masks is used in the optical paths, and subsequently interference principle is applied to extract two phase-only masks (i.e., ciphertexts) during image encryption. Feasibility and effectiveness of the proposed method are demonstrated by computer simulations. © 2012 Elsevier B.V. All rights reserved.
Source Title: Optics Communications
URI: http://scholarbank.nus.edu.sg/handle/10635/57348
ISSN: 00304018
DOI: 10.1016/j.optcom.2012.09.014
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