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  5. Cryptanalysis of optical security systems with significant output images
 
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Cryptanalysis of optical security systems with significant output images

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Author(s)
Situ, Guohai 
Gopinathan, Unnikrishnan 
Monaghan, David S. 
Sheridan, John T. 
Uri
http://hdl.handle.net/10197/3389
Date Issued
01 August 2007
Date Available
08T16:25:47Z December 2011
Abstract
The security of the encryption and verification techniques with significant output images is examined by a known-plaintext attack. We introduce an iterative phase-retrieval algorithm based on multiple intensity measurements to heuristically estimate the phase key in the Fourier domain by several plaintext-cyphertext pairs. We obtain correlation output images with very low error by correlating the estimated key with corresponding random phase masks. Our studies show that the convergence behavior of this algorithm sensitively depends on the starting point. We also demonstrate that this algorithm can be used to attack the double random phase encoding technique.
Sponsorship
Science Foundation Ireland
Irish Research Council for Science, Engineering and Technology
Other Sponsorship
Enterprise Ireland
Type of Material
Journal Article
Publisher
Optical Society of America
Journal
Applied Optics
Volume
46
Issue
22
Start Page
5257
End Page
5262
Copyright (Published Version)
2007 Optical Society of America
Subject – LCSH
Data encryption (Computer science)
Fourier transform optics
Optical data processing
DOI
10.1364/AO.46.005257
Web versions
http://dx.doi.org/10.1364/AO.46.005257
Language
English
Status of Item
Not peer reviewed
ISSN
0003-6935
1539-4522
This item is made available under a Creative Commons License
https://creativecommons.org/licenses/by-nc-sa/1.0/
Owning collection
Electrical and Electronic Engineering Research Collection
Scopus© citations
84
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Feb 1, 2023
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