Optical encryption interface

Details Optical encryption interface Optical encryption interface

1996-11-26

1998-08-11

Gregory, Bernarr E.

Cryptography

By modifying optical image

380 9, 380 28, 380 33, 380 59, H04L 900

Patent

active

057938717

ABSTRACT:
An analog optical encryption system based on phase scrambling of two-dimensional optical images and holographic transformation for achieving large encryption keys and high encryption speed. An enciphering interface uses a spatial light modulator for converting a digital data stream into a two dimensional optical image. The optical image is further transformed into a hologram with a random phase distribution. The hologram is converted into digital form for transmission over a shared information channel. A respective deciphering interface at a receiver reverses the encrypting process by using a phase conjugate reconstruction of the phase scrambled hologram.

REFERENCES:
patent: 3647275 (1972-03-01), Ward
patent: 3778128 (1973-12-01), Hannan
patent: 4120559 (1978-10-01), Abramson et al.
patent: 4972480 (1990-11-01), Rosen
patent: 5140636 (1992-08-01), Albares
patent: 5243649 (1993-09-01), Franson
patent: 5307410 (1994-04-01), Bennett
patent: 5311592 (1994-05-01), Udd
patent: 5541994 (1996-07-01), Tomko et al.
Optical Pattern Recognition For Validation and Security Verification; B. Javidi, Jun. 1994, Orlando. Fla.
Optical Image Encryption Based on Input Plan and Fourier Plan Random Encoding; P. Refregier, Jan. 1995, Conn.
Experimental Demonstration of the Random Phase Encoding Technique for Image Encryption and Security Verification; B. Javidia, G. Zhang, J. Li, Sep. 1996, Storrs, Connecticut.
Optical Network for Real-Time Face Recognition; H. Li, Y. Qiao, D. Psaltis, Sep. 1993, Pasadena, CA.
Optical Information Processing for Encryption and Security Systems; B. Javidi, 1994, Storrs, Conn.
Securing Information with Optical Technologies; B. Javidi, Mar. 1997, Storrs, Conn.
Volyar, A., Image Transmission via a Multimode Fiber Assisted by Polarization Preserving Phase Conjugation in the Photorefractive Crystal, 1991, Applied Physics.

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