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    Flexible optical encryption with multiple users and multiple security levels

    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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    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:
    Depositing User: Thomas Naughton
    Date Deposited: 07 Feb 2020 16:01
    Journal or Publication Title: Optics Communications
    Publisher: Elsevier
    Refereed: Yes
    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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