A Lightweight Medical Image Encryption Scheme Using Chaotic Maps and Image Scrambling

Telehealth is an emerging sector that enables doctors to remotely treat patients using virtual communication. This involves transferring medical images and other clinical data over public networks, presenting a significant challenge for radiology departments to safeguard the confidentiality of such data. Previous researchers have proposed various image encryption techniques, but none have been able to maintain an acceptable performance-to-security ratio. To address this issue, this research aims to develop an image encryption scheme that maintains this ratio using a combination of two chaotic maps: Baker’s map and 2D Logistic Sine Coupling map (2D-LSCM), along with image scrambling. The proposed algorithm’s performance and security are compared to other notable algorithms to demonstrate its effectiveness.