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Experimental QR code optical encryption: noise-free data recovering
(Optical Society Of America, 2014-05)
We report, to our knowledge for the first time, the experimental implementation of a quick response (QR) code as a “container” in an optical encryption system. A joint transform correlator architecture in an interferometric ...
Experimental optical encryption system based on a single-lens imaging architecture combined with a phase retrieval algorithm
(IOP Publishing, 2015-06)
We propose, and experimentally demonstrate, a single-lens imaging system as a compact encoding architecture by using a hybrid protocol for data processing. The encryption process consists of coherent light illuminating a ...
Experimental optical encryption of grayscale information
(OSA - The Optical Society, 2017-07)
In this paper, we present a new protocol for achieving lower noise and consequently a higher dynamic range in optical encryption. This protocol allows for the securing and optimal recovery of any arbitrary grayscale images ...
Asymmetric multiple-image encryption system based on a chirp z-transform
(Optical Society of America, 2019-07)
An asymmetric multi-image encryption system based on the chirp z-transform (CZT) is demonstrated. The setup is a hybrid architecture that combines a double-random-phase encryption scheme in 4f configuration and a multiplexing ...
Cryptographic salting for security enhancement of double random phase encryption schemes
(Institute of Physics Publishing, 2017-09)
Security in optical encryption techniques is a subject of great importance, especially in light of recent reports of successful attacks. We propose a new procedure to reinforce the ciphertexts generated in double random ...
The space-bandwidth product in the joint transform correlator optical encryption setup
(Elsevier Science, 2011-09-01)
In this work we study the joint transform correlator (JTC) optical encryption setup through the Wigner function. We found analytical expressions for the spatial and spatial frequency extent of the encrypted signal. Since ...
Roadmap on optical security
(Institute of Physics Publishing, 2016-08)
Information security and authentication are important challenges facing society. Recent attacks by hackers on the databases of large commercial and financial companies have demonstrated that more research and development ...
Customized data container for improved performance in optical cryptosystems
(IOP Publishing, 2016-12)
Coherent optical encryption procedures introduce speckle noise to the output, limiting many practical applications. Until now the only method available to avoid this noise is to codify the information to be processed into ...