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arXiv · 1509.07106

Perfectly secure steganography: hiding information in the quantum noise of a photograph

Bruno Sanguinetti·Anthony Martin·Giulia Traverso·Jonathan Lavoie·Hugo Zbinden
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Abstract

We show that the quantum nature of light can be used to hide a secret message within a photograph. Using this physical principle we achieve information-theoretic secure steganography, which had remained elusive until now. The protocol is such that the digital picture in which the secret message is embedded is perfectly undistinguishable from an ordinary photograph. This implies that, on a fundamental level, it is impossible to discriminate a private communication from an exchange of photographs.

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Bruno Sanguinetti, Anthony Martin, Giulia Traverso, Jonathan Lavoie, Hugo Zbinden. 2015-09-23. Perfectly secure steganography: hiding information in the quantum noise of a photograph. https://doi.org/10.1103/physreva.93.012336

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