Secure selective recovery protocol for multiple optically encrypted data

doi:10.1016/j.optlaseng.2020.106383

Return

Secure selective recovery protocol for multiple optically encrypted data

2021-02-01

PRE

Alexis Jaramillo-Osorio *

Alejandro Velez-Zea

Alejandro Mira-Agudelo

John Fredy Barrera

Roberto Torroba

DOI：10.1016/j.optlaseng.2020.106383

Original

Original request for help

Save

Abstract

En 中文

In this work we present a secure selective recovery protocol for multiple optically encrypted data based on sampling with orthogonal random binary masks. In this protocol, every single object is encrypted using a single arm free-space cryptosystem, filtered and multiplied by an orthogonal random binary mask, then all the encrypted, filtered and sampled objects are multiplexed. Under this protocol, an authorized user can access a single object from the multiplexed data using both the encryption key and the corresponding orthogonal random binary mask. Without knowledge of the orthogonal binary masks used in the process, neither authorized users nor attackers can recognize the amount of multiplexed data. As a demonstration of the usefulness of our proposal, we implement an optically encrypted keyboard in which each letter is recovered individually without crosstalk. We can securely deliver messages of arbitrary length by sending the encrypted keyboard, the encryption key, and the corresponding set of binary masks. We perform tests showing the resistance of the processed data to occlusion and random noise. Additionally, we discuss the potential resistance of our proposal to Dirac delta and chosen plaintext attacks. Finally, a holographic projection setup is implemented to perform a selective experimental reconstruction of the original objects. The experimental results demonstrate the viability and validity of our proposal.

Keywords:

Optical encryption

Selective recovery

Sampled data

Multiplexing

Encrypted keyboard

AI Summary

Key information extracted from the uploaded paper, including a brief overview, abstract, background, key highlights, visual analysis, and future outlook.