Hala S. El-sayed

TL;DR: The proposed opto 2D LM-based 2D FrFT color image cryptosystem is tested through the known security key indicators such as visual inspecting, entropy testing, histogram testing, cipher quality measures, noise testing, computational time analysis, occlusion attack analysis, and differential testing.

TL;DR: Simulation results prove that the chaotic-based image encryption in the FrFT domain increases the efficiency of the confusion process and achieves a high nonlinear relation between the plainimage and the cipherimage in a symmetric ciphering approach.

TL;DR: Experiments and security analysis show that the proposed block-based optical color image cipher using DRPE with increased block size is secure, effective, and including a good immunity to channel noise.

TL;DR: Matlab simulation experiments show that the proposed optical image cryptosystem enhances the security level of the DRPE, and at the same time it has a better immunity to noise.

TL;DR: In this article, a comparative study of different highly efficient broadband solar absorbers based on gold resonators is presented, where the performance of the structures is quantified in terms of the absorption, reflectance, and transmittance.