The ability to interpret information through automatic sensors is one of the most important
pillars of modern technology. In particular, the potential of biosensors has been used to …

Abstract Information security and authentication are important challenges facing society.
Recent attacks by hackers on the databases of large commercial and financial companies …

Aside from its application to the vulnerability analysis of optical cryptosystems, deep learning
(DL) technique can also be used as a potential basis for optical cryptography itself. Here, we …

A novel asymmetric cryptosystem based on coherent superposition, which is free from
silhouette problem, is proposed. Being different from the phase-truncated Fourier transform …

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 …

In this paper, an asymmetric cryptosystem for optical image encryption using biometric keys
is proposed based on the phase retrieval algorithm and the phase-truncated Fourier …

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

We propose a new asymmetric optical image encryption scheme based on an improved
amplitude–phase retrieval algorithm. Using two random phase masks that serve as public …

We propose optical image encryption and authentication in the linear canonical transform
(LCT) method by using a sparse representation technique. The linearity in the LCT based …

We have carried out a study of optical image encryption in the Fresnel transform (FrT)
domain, using a random phase mask (RPM) in the input plane and a phase mask based on …