Known-plaintext attack to optical encryption systems with space and polarization encoding

Abstract

Space-based optical encryption (SBOE) and double random polarization encoding (DRPO) are previously considered to be more secure than common random-phase-encoding-based optical cryptosystems. The known-plaintext attack (KPA) to SBOE and DRPO was seldomly investigated in the past. A matrix regression approach based on training samples is proposed in this paper to crack these two optical cryptosystems. The relationship between plaintexts and ciphertexts is directly modeled by a complex-amplitude weighting matrix, which is optimized by a gradient descent algorithm. This approach has a simple model compared with deep learning and the KPA can be implemented without recovering the exact key. Our proposed KPA schemes reveal the security flaws of SBOE and DRPO, as well as other linear optical cryptosystems.

Encriptación de información mediante procesamiento óptico

“…Otras líneas que se siguen desarrollando activamente son las encaminadas a lograr una reducción de ruido para mejorar la calidad de los datos recuperados y la encriptación óptica con recuperación libre de ruido (Cheremkhin, et al, 2021a;Cheremkhin, et al, 2021b;Evtikhiev, et al, 2020;Wang, et al, 2020), la encriptación de múltiples datos (He, et al, 2020;Wu, et al, 2019;Zhang, et al, 2022) e incluso, la combinación de técnicas de multiplexado y recuperación libre de ruido (Jaramillo-Osorio, et al, 2020b;Yan, et al, 2019). Debido a que los sistemas ópticos de encriptación han demostrado su gran potencialidad para aplicaciones prácticas, una de las líneas más activas actualmente es el criptoanálisis, en la cual se busca probar la seguridad de los sistemas ópticos de encriptación adaptando en el dominio óptico algunos de los ataques que se usan exclusivamente en el dominio digital (Hai, et al, 2019;Jiao, et al, 2020;Wang, et al, 2019b;Wu, et al, 2021;Zhang, et al, 2021). Esta es un área en desarrollo y consolidación, ya que los ataques a los sistemas ópticos experimentales están en sus primeras etapas y se prevén futuros avances que permitan fortalecer el área de la protección de datos por medio de procesadores ópticos.…”

A novel conservative chaos driven dynamic DNA coding for image encryption

“…Such systems have the advantage of sending complex data in parallel and are also capable of carrying out usually time-consuming operations in a faster way, therefore are found suitable in image encryption. Besides having above mentioned clear advantages, the optical processes governed by the integral transforms possess the linearity and symmetry properties which make the optical encryption system vulnerable to various cryptanalytic attacks [4,[11][12][13]. On the other hand, DNA computing, since its advent in 1994 [14], has attracted the attention of researchers due to some of its peculiar features like huge informationcarrying capacity, parallelism, ultra-low energy consumption etc.…”

Decryption of Deterministic Phase-Encoded Digital Holography Using Convolutional Neural Networks

“…Optical encryption is convenient and highly secure. It allows highspeed parallel processing of data and provides many degrees of freedom to encode the light beam, such as the phase [7,10,11], the wavelength [12] and the polarization [13]. Optical encryption began with the Double-Random-Phase Encoding (DRPE) method that was proposed by Refregier, P. and Javidi, B. in 1995 [14].…”