期刊
OPTICS AND LASER TECHNOLOGY
卷 42, 期 5, 页码 724-731出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.optlastec.2009.11.016
关键词
Multiple image encryption/decryption; Linear canonical transforms; Chaotic functions
We propose a new method for multiple image encryption using linear canonical transforms and chaotic maps. Three linear canonical transforms and three chaotic maps are used in the proposed technique. The three linear canonical transforms that have been used are the fractional Fourier transform, the extended fractional Fourier transform and the Fresnel transform. The three chaotic maps that have been used are the tent map, the Kaplan-Yorke map and the Ikeda map. These chaotic maps are used to generate the random phase masks and these random phase masks are known as chaotic random phase masks. The mean square error and the signal to noise ratio have been calculated. Robustness of the proposed technique to blind decryption has been evaluated. Optical implementation of the technique has been proposed. Experimental and simulations results are presented to verify the validity of the proposed technique. (C) 2009 Elsevier Ltd. All rights reserved.
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