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Optical Engineering

Enhancement of interference-based image encryption using chaotic permutation and phase-blend operation
Author(s): Qu Wang; Jinyun Zhou; Qing Guo
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Paper Abstract

In conventional interference-based optical encryption schemes, a potential cracker can retrieve partial information (silhouette) of the secret image using only one phase-only mask (POM). We resolve this drawback using a phase-blend operation and piecewise linear chaotic map (PWLCM) to further encode the POMs. One cannot recover a secret image visibly when inverse phase-blend operation and inverse chaotic permutation are not carried out with the correct decryption keys. Chaotic parameters of PWLCM, and random phase-angle function in the phase-blend operation enlarge the key space and improve the security of the proposed system greatly. Numerical simulations and optoelectronic experiments are performed to verify the effectiveness of the proposed scheme.

Paper Details

Date Published: 20 April 2012
PDF: 10 pages
Opt. Eng. 51(4) 048201 doi: 10.1117/1.OE.51.4.048201
Published in: Optical Engineering Volume 51, Issue 4
Show Author Affiliations
Qu Wang, Guangdong Univ. of Technology (China)
Jinyun Zhou, Guangdong Univ. of Technology (China)
Qing Guo, Ctr. for Earth Observation and Digital Earth (China)

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