Performance Analysis of a Lightweight Image Re‐Encryption Scheme for <scp>5G HetNets</scp>

ABSTRACT A lightweight encryption scheme has been proposed for the resource‐constrained devices in the HetNets, which is backed by re‐encryption for handling a massive amount of data, i.e., images and multimedia files in 5G. A comprehensive review on recent research, developments, and strategies in image encryption systems has been presented. Various underlined and exemplary security schemes that remain unexploited based on several statistical models are reviewed. Multiple hybrid keys have been employed that identify the data classes and subsequently encrypt as well as re‐encrypt the data by ensuring the security level does not fall below 40%. Both the gray scale and colored images have been encrypted, and subsequently, heat dissipation, encryption, and hacking time have also been recorded using FIS to depict the efficacy of the proposed scheme. Furthermore, these results have been compared with the recent encryption schemes to validate the superiority of the proposed scheme.