Arun Amaithi Rajan is a PhD researcher in the Department of Computer Science and Engineering at the College of Engineering, Guindy, Anna University, Chennai. He holds a master’s degree from the National University of Singapore (NUS), earned in 2020. Prior to his PhD, he worked as a Security Firmware Engineer at Micron, Singapore, for two years, gaining industry experience in embedded security. His research interests lie in cryptography and multimedia security, focusing on secure medical image storage, retrieval, and encryption techniques for cloud environments.