Nishchal, Naveen K. and Naughton, Thomas J. (2011) Flexible optical encryption with multiple users and multiple security levels. Optics Communications, 284 (3). pp. 735-739. ISSN 0030-4018

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Abstract

We present a basic optical encryption architecture that admits several cryptography applications based on multiplexing. Users can decrypt different private images from the same encrypted image, a superuser can have a key that decrypts all encrypted images, and multiplexed images can be encrypted with different levels of security. This system is presented in the context of a general framework of optical encryption application development. We illustrate with a real-world three-dimensional scene, captured with digital holography, and encrypted using the fractional Fourier transform, where different users have access to different three-dimensional objects in the scene.

Item Type:	Article
Keywords:	Optical image encryption; Information security; Fractional Fourier transform; Three-dimensional image processing; Digital holography;
Academic Unit:	Faculty of Science and Engineering > Computer Science Faculty of Science and Engineering > Research Institutes > Hamilton Institute
Item ID:	12382
Identification Number:	https://doi.org/10.1016/j.optcom.2010.09.065
Depositing User:	Thomas Naughton
Date Deposited:	07 Feb 2020 16:01
Journal or Publication Title:	Optics Communications
Publisher:	Elsevier
Refereed:	Yes
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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