Journal of Modern Optics

Optical asymmetric cryptosystem based on photon counting and phase-truncated Fresnel transforms

Sudheesh K. Rajput, Naveen Kumar Nishchal

Published Dec 12, 2016• 13 citations

Abstract

We propose a novel optical asymmetric cryptosystem combining the photon counting imaging with phase-truncated Fresnel transform, which can be used for complete information retrieval and authentication verification. The proposed combination overcomes the weakness of photon counting-based double random phase-encoding scheme. For retrieval of original image for authentication, the reverse process of phase truncation approach is followed and a nonlinear correlation filter is used. The complete information retrieval and authentication verification are possible provided sufficient number of photons is available. To check the robustness of the proposed scheme, attack analysis has been carried out. The simulation results are presented to demonstrate the proposed idea.

DOI: 10.1080/09500340.2016.1265677

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