High-security learning-based optical encryption assisted by disordered metasurface

doi:10.1038/s41467-024-46946-w

High-security learning-based optical encryption assisted by disordered metasurface

2024-03-23

11

OA

AI

DOI：10.1038/s41467-024-46946-w

Original

Save

View PDF

Abstract

En 中文

Artificial intelligence has gained significant attention for exploiting optical scattering for optical encryption. Conventional scattering media are inevitably influenced by instability or perturbations, and hence unsuitable for long-term scenarios. Additionally, the plaintext can be easily compromised due to the single channel within the medium and one-to-one mapping between input and output. To mitigate these issues, a stable spin-multiplexing disordered metasurface (DM) with numerous polarized transmission channels serves as the scattering medium, and a double-secure procedure with superposition of plaintext and security key achieves two-to-one mapping between input and output. In attack analysis, when the ciphertext, security key, and incident polarization are all correct, the plaintext can be decrypted. This system demonstrates excellent decryption efficiency over extended periods in noisy environments. The DM, functioning as an ultra-stable and active speckle generator, coupled with the double-secure approach, creates a highly secure speckle-based cryptosystem with immense potentials for practical applications. In this work, the employment of disordered metasurface as an ultra-stable and actively polarized speckle generator in a passive manner, coupled with a double-secure treatment to the plaintext, enables a highly secure speckle-based cryptosystem.

Keywords:

SCATTERING MEDIA

TRANSMISSION

CORNERS

LAYERS

LIGHT

High-security learning-based optical encryption assisted by disordered metasurface

Abstract

AI Summary

Journal

Organization