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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Franco Gori
  • Vol. 31, Iss. 6 — Jun. 1, 2014
  • pp: 1233–1238

An optical encryption and authentication scheme using asymmetric keys

Sudheesh K. Rajput and Naveen K. Nishchal  »View Author Affiliations


JOSA A, Vol. 31, Issue 6, pp. 1233-1238 (2014)
http://dx.doi.org/10.1364/JOSAA.31.001233


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Abstract

We propose a novel optical information encryption and authentication scheme that uses asymmetric keys generated by the phase-truncation approach and the phase-retrieval algorithm. Multiple images bonded with random phase masks are Fourier transformed, and obtained spectra are amplitude- and phase-truncated. The phase-truncated spectra are encoded into a single random intensity image using the phase-retrieval algorithm. Unlike most of the authentication schemes, in this study, only one encrypted reference image is required for verification of multiple secured images. The conventional double random phase encoding and correlation techniques are employed for authentication verification. Computer simulation results and theoretical explanation prove the effectiveness of the proposed scheme.

© 2014 Optical Society of America

OCIS Codes
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(070.4550) Fourier optics and signal processing : Correlators
(100.0100) Image processing : Image processing
(100.4998) Image processing : Pattern recognition, optical security and encryption

ToC Category:
Fourier Optics and Signal Processing

History
Original Manuscript: March 17, 2014
Revised Manuscript: April 15, 2014
Manuscript Accepted: April 15, 2014
Published: May 14, 2014

Citation
Sudheesh K. Rajput and Naveen K. Nishchal, "An optical encryption and authentication scheme using asymmetric keys," J. Opt. Soc. Am. A 31, 1233-1238 (2014)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-31-6-1233

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