6 March 2002 Binary phase-based optical encryption system using interferometer
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In this paper, we propose a new image encryption and decryption system using a phase-modulated random key and the principle of interference. This optical system makes an encrypted image by the multiplication of a random phase key and a phase-modulated image. The random key and an image consist of only binary values. Thereafter a phase value of every pixel of the encrypted image is 0 or pi. The reconstructed pattern of the original image is simply performed by interfering between reference wave and a direct pixel to pixel mapping image of the encrypted image with the same random phase key. In optical experiment, both computer simulation and optical experiment show a good performance of the proposed optical method as encryption scheme.
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Dong-Hoan Seo, Dong-Hoan Seo, Chang-Mok Shin, Chang-Mok Shin, Jong-Yun Kim, Jong-Yun Kim, Chul-Soo Kim, Chul-Soo Kim, Jeong-Woo Kim, Jeong-Woo Kim, Soo-Joong Kim, Soo-Joong Kim, } "Binary phase-based optical encryption system using interferometer", Proc. SPIE 4734, Optical Pattern Recognition XIII, (6 March 2002); doi: 10.1117/12.458402; https://doi.org/10.1117/12.458402

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