Double random phase encoding method using a key code generated by affine transformation

Mosso, Fabian; Tebaldi, Myrian; Torroba, Roberto; Bolognini, Néstor

doi:10.1016/j.ijleo.2010.03.018

Cited by 10 publications

(5 citation statements)

References 14 publications

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“…This number is optimized when the mask j e (p′, q′) is not compromised at 100%. Then, we must use strategies that do not allow the interception of decryption keys as a single element; like the one reported in [32] where the user built an encryption key in the decoding station by using different parameters received by multiple channels.…”

Section: Security Analysismentioning

confidence: 99%

Dynamic multiple-image encryption based on chirp z-transform

Mosso

Bolognini

2019

J. Opt.

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A dynamic encryption scheme is demonstrated based on chirp z-transform (CZT). The novel design of this setup allows us to protect multiple images in a multiplexed format and fully recover them without the influence of crosstalk and sample noise. The encoding stage is implemented using the 2D CZT and a Fourier lens. The CZT works with proper frequency parameters to control the position and size of the input frequency spectrum. The accurate positioning leads to an efficient packing of the multiplexed images and a remarkable improvement of the signal-to-noise ratio of the decrypted pictures. The introduction of the CZT in the field of encryption is significant, since it can expand the functionality to a dynamic regime of optical and digital architectures for static encoding. We validated the feasibility of our proposal with the encryption and decryption of a color image sequence and a set of binary images.

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Section: Security Analysismentioning

confidence: 99%

Dynamic multiple-image encryption based on chirp z-transform

Mosso

Bolognini

2019

J. Opt.

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“…Una ventaja adicional está en que la información necesaria para la construcción de la llave de seguridad en la estación desencriptadora puede ser transmitida usando canales abiertos. Dentro de esta línea de trabajo, se ha propuesto la utilización de llaves de seguridad generadas mediante transformadas afines (Mosso et al, 2010). A partir de una imagen fuente y aplicando sobre ésta sucesivas operaciones de reflexión, traslación, rotación, recortes, escalamientos y algunas operaciones aritméticas, controladas por una serie de parámetros conocidos, se obtiene la llave de seguridad.…”

Section: Revista Tecno Lógicasunclassified

Sistema Óptico de Encriptación de Doble Máscara de Fase bajo Arquitectura 4f

Ríos

Rueda

Barrera

2010

TecnoL.

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ResumenActualmente el área de la encriptación óptica de información concentra los esfuerzos de muchos investigadores en diferentes laboratorios del mundo, esto debido a que las contribuciones presentadas en las dos últimas décadas han mostrado la confiabilidad, versatilidad y aplicabilidad de los sistemas ópticos de encriptación. Uno de los sistemas ópticos de encriptación más antiguo, más usado y que actualmente está protegido por varias patentes se basa en la utilización de dos máscaras aleatorias de fase y una arquitectura 4f. En esta contribución se hace una revisión bibliográfica de este sistema óptico de encriptación. Se presenta la teoría y el funcionamiento básico explicando los montajes y técnicas que permiten su implementación experimental. Con el fin de mostrar la validez del método, se presentan los resultados obtenidos mediante la simulación computacional del sistema óptico virtual.

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“…Optical encryption technology is a very useful tool for data security applications [1][2][3][4][5][6]. Since the pioneering work on double-random phase encoding (DRPE) by Refregier and Javidi [7], numerous literatures have been presented to implement DRPE system by optics and electronic means [8][9][10][11][12][13][14][15][16][17][18][19][20]. The optical encryption system for implementing DRPE is initially realized by use of the conventional 4foptical processor.…”

Section: Introductionmentioning

confidence: 99%

Generalized description of double random phase encoding by Collins diffraction transformation

Kwak

Javidi

2018

J. Opt.

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We present a generalized theory for describing encryption and decryption by using the double random phase encoding (DRPE) technique under the framework of the Collins diffraction transform formalism. The theory covers to a variety of diffraction domain which includes the Fourier domain (conventional 4f-optical processor), the Fresnel domain and the fractional Fourier transform (FRFT) domain. From the theoretical basis developed in this work, we present novel optical DRPE systems such as Gaussian imaging DRPE, inverse operation DRPE and Fresnel diffraction DRPE systems, which are plausible to implement. It is shown that the maximum number of degrees of freedom (or independent design parameters) of proposed DRPE system increases four times, when compared with the conventional 4f-optical system, which guarantee much more secure encryption and decryption.

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Double random phase encoding method using a key code generated by affine transformation

Cited by 10 publications

References 14 publications

Dynamic multiple-image encryption based on chirp z-transform

Dynamic multiple-image encryption based on chirp z-transform

Sistema Óptico de Encriptación de Doble Máscara de Fase bajo Arquitectura 4f

Generalized description of double random phase encoding by Collins diffraction transformation

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