This research proposes a new image encryption scheme based on Lorenz hyperchaotic
system and Rivest–Shamir–Adleman (RSA) algorithm. Firstly, the initial values of the Lorenz …

In this paper, we propose a novel optical asymmetric fingerprint image encryption technique
that uses QR decomposition in gyrator wavelet transform domain. A fingerprint image is …

A single channel optical asymmetric cryptosystem for color image in fractional Fourier
transform (FrFT) domain is presented. Instead of commonly used RGB channels encryption …

This study proposes a new image encryption scheme based on a generalized Arnold map
and Rivest–Shamir–Adleman (RSA) algorithm. First, the parameters of the generalized …

In this paper, we proposed an iterative attacking algorithm to the pure phase asymmetric
optical cryptosystem based on unequal modulus decomposition. Furthermore, we have …

In this paper, we propose an optical asymmetric single-channel cryptosystem based on QZ
synthesis (QZS) for color images. In our cryptosystem, a QZS method for synthesizing color …

In this paper, an asymmetric image encryption mechanism using QR decomposition
technique in hybrid multi-resolution wavelet (HMW) domain is presented. QR decomposition …

We present an optical hyperspectral image cryptosystem using improved Chirikov mapping
in the gyrator transform domains. This optical encryption scheme can hide the spatial and …

In this paper, a silhouette-free and crosstalk-free multiple-color-image cryptosystem is
presented based on unequal modulus decomposition (UMD) in the gyrator transform (GT) …

This paper proposes a method of double image encryption based on hybrid structured
phase mask (HSPM) in the gyrator transform (GT) domain. The scheme becomes more …