Three-dimensional joint transform correlator cryptosystem

We introduce for the first time, to the best of our knowledge, a three-dimensional experimental joint transform correlator (JTC) cryptosystem allowing the encryption of information for any 3D object, and as an additional novel feature, a second 3D object plays the role of the encoding key. While the...

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Bibliographic Details
Published in:Optics letters 2016-02, Vol.41 (3), p.599-602
Main Authors: Zea, Alejandro Velez, Ramirez, John Fredy Barrera, Torroba, Roberto
Format: Article
Language:English
Subjects:
Architecture
Computer systems
Cryptography
Encryption
Fourier analysis
Holograms
Holography
Joint transform correlators
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Summary:We introduce for the first time, to the best of our knowledge, a three-dimensional experimental joint transform correlator (JTC) cryptosystem allowing the encryption of information for any 3D object, and as an additional novel feature, a second 3D object plays the role of the encoding key. While the JTC architecture is normally used to process 2D data, in this work, we envisage a technique that allows the use of this architecture to protect 3D data. The encrypted object information is contained in the joint power spectrum. We register the key object as a digital off-axis Fourier hologram. The encryption procedure is done optically, while the decryption is carried out by means of a virtual optical system, allowing for flexible implementation of the proposal. We present experimental results to demonstrate the validity and feasibility of the method.
ISSN:0146-9592
1539-4794
DOI:10.1364/ol.41.000599