Enhancement of interference-based image encryption using chaotic permutation and phase-blend operation

Qu Wang; Jinyun Zhou; Qing Guo

doi:10.1117/1.OE.51.4.048201

20 April 2012 Enhancement of interference-based image encryption using chaotic permutation and phase-blend operation

Qu Wang, Jinyun Zhou, Qing Guo

Author Affiliations +

Optical Engineering, Vol. 51, Issue 4, 048201 (April 2012). https://doi.org/10.1117/1.OE.51.4.048201

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.

Citation Download Citation

Qu Wang, Jinyun Zhou, and Qing Guo "Enhancement of interference-based image encryption using chaotic permutation and phase-blend operation," Optical Engineering 51(4), 048201 (20 April 2012). https://doi.org/10.1117/1.OE.51.4.048201

Published: 20 April 2012

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