The choice of optical system is critical for the security of double random phase encryption systems

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Title: The choice of optical system is critical for the security of double random phase encryption systems
Authors: Muniraj, Inbarasan
Guo, Changliang
Malallah, Ra'ed
Cassidy, Derek
Zhao, Liang
Ryle, James P.
Healy, John J.
Sheridan, John T.
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Date: 14-Jun-2017
Abstract: The linear canonical transform (LCT) is used in modeling a coherent light field propagation through first-order optical systems. Recently, a generic optical system, known as the Quadratic Phase Encoding System (QPES), for encrypting a two-dimensional (2D) image has been reported. In such systems, two random phase keys and the individual LCT parameters (, , ) serve as secret keys of the cryptosystem. It is important that such encryption systems also satisfies some dynamic security properties. In this work, we therefore examine such systems using two cryptographic evaluation methods, the avalanche effect and bit independence criterion, which indicate the degree of security of the cryptographic algorithms using QPES. We compared our simulation results with the conventional Fourier and the Fresnel transform based DRPE systems. The results show that the LCT based DRPE has an excellent avalanche and bit independence characteristics compared to the conventional Fourier and Fresnel based encryption systems.Keywords: Quadratic Phase Encoding system, linear canonical transform, Double Random Phase Encryption, Avalanche effect and bit independence criterion.
Funding Details: Science Foundation Ireland
Type of material: Journal Article
Publisher: Society of Photo-optical Instrumentation Engineers (SPIE)
Copyright (published version): 2017 Society of Photo Optical Instrumentation Engineers (SPIE)
Keywords: Personal sensingQuadratic phase encoding systemLinear canonical transformDouble Random Phase EncryptionAvalanche effectBit independence criterion
DOI: 10.1117/1.OE.56.6.063103
Language: en
Status of Item: Peer reviewed
Appears in Collections:Solar Energy Conversion (SEC) Cluster Research Collection
Electrical and Electronic Engineering Research Collection
Insight Research Collection

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