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Yinggang Ding

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Asymmetric Optical Scanning Holography Encryption with Elgamal Algorithm

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By Chunying Wu, Aimin Yan, Ting-Chung Poon, Yinggang Ding
| MDPI
1. Introduction Information security is important and ubiquitous. Specifically, optical imaging encryption technology is an integral part of information security [1,2]. The history of optical imaging encryption dates back to Refregier and Javidi, who built the first optical encryption system [3]. An optical encryption system first produces an image with a first random phase mask in the input plane. The Fourier transform of the product is subsequently encoded by a second random phase mask.
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