Scientists in China, Hong Kong, and Singapore suggest ground-up pieces of glass could help in securely encrypting facial images via a new optical cryptosystem.
The system transmits facial-image data through the glass, producing speckles with apparently random scattered patches of light and dark recorded by camera as a secret message.
The researchers said the process generates keys 17.2 billion bits long; they trained a deep learning neural network to decrypt messages by feeding it 19,800 facial images before and after being sent through a given set of ground glass.
Preliminary tests showed the network could decrypt the images with over 98% accuracy.
Hong Kong Polytechnic University's Puxiang Lai described the system as "fast, low-cost, and easy to integrate with other systems."
From IEEE Spectrum
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