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Vol. 10, No. 3, August 2025

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Improved Chaotic Image Encryption on Grayscale Colorspace Using Elliptic Curves and 3D Lorenz System

https://doi.org/10.22219/kinetik.v10i3.2251
Daurat Sinaga
Universitas Dian Nuswantoro
Cahaya Jatmoko
Universitas Dian Nuswantoro
Erna Zuni Astuti
Universitas Dian Nuswantoro
Eko Hari Rachmawanto
Universitas Dian Nuswantoro
Abdussalam Abdussalam
Universitas Dian Nuswantoro
Elkaf Rahmawan Pramudya
Universitas Dian Nuswantoro
Guruh Fajar Shidik
Universitas Dian Nuswantoro
Pulung Nurtantio Andono
Universitas Dian Nuswantoro
Mohamed Doheir
Universiti Teknikal Malaysia Melaka

Corresponding Author(s) : Daurat Sinaga

dauratsinaga@dsn.dinus.ac.id

Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control, Vol. 10, No. 3, August 2025

Abstract

Digital data, especially visual content, faces significant security challenges due to its susceptibility to eavesdropping, manipulation, and theft in the modern digital landscape. One effective solution to address these issues is the use of encryption techniques, such as image encryption algorithms, that ensure the confidentiality, integrity, and authenticity of digital visual content. This study addresses these concerns by introducing an advanced image encryption method that combines Elliptic Curve Cryptography (ECC) with the 3D Lorenz chaotic system to enhance both security and efficiency. The method employs pixel permutation, ECC-based encryption, and diffusion using pseudo-random numbers generated by the Lorenz 3D system. The results show superior performance, with an MSE of 3032 and a PSNR of 8.87 dB, as well as UACI and NPCR values of 33.34% and 99.64%, respectively, indicating strong resilience to pixel intensity changes. During testing, the approach demonstrated robustness, allowing only the correct key to decrypt images accurately, while incorrect or modified keys led to distorted outputs, ensuring encryption reliability. Future work could explore extending the method to color images, optimizing processing for larger datasets, and incorporating additional chaotic systems to further fortify encryption strength.

Keywords

3D Lorenz System Chaotic Image Encryption Cryptography Elliptic Curve Quality Measurement
Sinaga, D., Jatmoko, C., Astuti, E. Z., Rachmawanto, E. H., Abdussalam, A., Pramudya, E. R., Shidik, G. F., Andono, P. N., & Doheir, M. (2025). Improved Chaotic Image Encryption on Grayscale Colorspace Using Elliptic Curves and 3D Lorenz System. Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control, 10(3), 367-376. https://doi.org/10.22219/kinetik.v10i3.2251
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