Visual cryptography based on optical interference encryption technique

Dong-Hoan Seo; Jong-Yun Kim; Sang-Su Lee; Se-Joon Park; Woong Ho Cho; Soo-Joong Kim

doi:10.1117/12.434217

26 July 2001 Visual cryptography based on optical interference encryption technique

Dong-Hoan Seo, Jong-Yun Kim, Sang-Su Lee, Se-Joon Park, Woong Ho Cho, Soo-Joong Kim

Proceedings Volume 4386, Photonic and Quantum Technologies for Aerospace Applications III; (2001) https://doi.org/10.1117/12.434217
Event: Aerospace/Defense Sensing, Simulation, and Controls, 2001, Orlando, FL, United States

Abstract

In this paper, we proposed a new visual cryptography scheme based on optical interference that can improve the contrast and signal to noise ratio of reconstructed images when compared to conventional visual cryptography methods. The binary image being encrypted is divided into any number of n slides. For encryption, randomly independent keys are generated along with another random key based on a XOR process of random keys. The XOR process between each divided image and each random key produces the encryption of n encrypted images. These encrypted images are then used to make encrypted binary phase masks. For decryption, the phase masks are placed on the paths of a Mach-Zehnder interferometer.

Citation Download Citation

Dong-Hoan Seo, Jong-Yun Kim, Sang-Su Lee, Se-Joon Park, Woong Ho Cho, and Soo-Joong Kim "Visual cryptography based on optical interference encryption technique", Proc. SPIE 4386, Photonic and Quantum Technologies for Aerospace Applications III, (26 July 2001); https://doi.org/10.1117/12.434217

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