The secret sharing scheme is a security tool that provides reliability and robustness for multi-
user authentication systems. This work focuses on improving the security and efficiency of …

We propose an asymmetric image encryption scheme that employs chaotic phase masks
and vectorial light field. Vector light fields have non-uniform state of polarization across the …

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) …

In this paper, we have introduced a new cryptosystem based on QZ modulation with
structured phase mask (SPM) in Fresnel domain. For encryption using QZ decomposition, a …

The use of digital hologram (DH) in optical medical images is analyzed in this paper. These
analyses are done in various domains of double random phase encoding and it has been …

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 …

For any optical encryption and decryption systems, security is the major concern. In this
paper, security of time varying nonlinear term embedded double random phase encoding …

We present a novel method for image encryption by Modified Gerchberg–Saxton Iterative
Algorithm (MGSIA) using deterministic masks (DMKs) and singular value decomposition …

An asymmetric image encryption scheme has been proposed in the fractional Fourier
transform (FRT) domain, using a radial Hilbert mask in the input plane and a random phase …

We propose an optical asymmetric technique for multiple-images that uses the feature of
arbitrary vector light. It involves structured phase masks that have been generated using …