Biometric Data Encryption Using a New Five Dimensional Hyper-Chaotic System
Maryam T. M. Alghamazi, Sadiq Abdul Aziz Mehdi, Emad Issa Abdul Kareem · International Journal of Safety and Security Engineering · 2025
Interest in the biometric data has significantly increased as a result of its potential as one of the reliable methods of authentication.To provide safe storage and transmission of the biometric data images over the public networks, a fast and lossless cryptosystem is highly necessary.The present study introduces a new approach for biometric image encryption with the use of a hyper-chaotic map.A hyper-5D chaotic system has been suggested as a solution for diffusion and confusion problems, with the added advantage of providing a vast key space.This method is heavily dependent upon the chaotic sequences that are produced through the chaotic system in 5-D.A strong level of encryption is ensured with the use of such sequences for the modification and reorganization of pixel values through the image.The proposed system's effectiveness has been evaluated with the use of several performance measures from the security analysis.These included key space analysis, key sensitivity analysis, histogram analysis, correlation coefficient, peak signal-to-noise ratio (PSNR), unified average changing intensity (UACI), information entropy, mean square error (MSE), and time efficiency analysis.The strengths of the suggested cryptosystem against brute force, differential, and statistical attacks have been confirmed by the security analysis findings.