New Step in Lightweight Medical Image Encryption and Authenticity

Saleem Alsaraireh (), Ashraf Ahmad and Yousef AbuHour
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Saleem Alsaraireh: King Hussein School of Computing Science, Amman 11941, Jordan
Ashraf Ahmad: King Hussein School of Computing Science, Amman 11941, Jordan
Yousef AbuHour: King Hussein School of Computing Science, Amman 11941, Jordan

Mathematics, 2025, vol. 13, issue 11, 1-17

Abstract: Data security is critical, particularly in medical imaging, yet remains challenging. Many research efforts have focused on enhancing medical image security, particularly during network transmission. Ensuring confidentiality and authenticity is a key priority for researchers. However, traditional encryption methods are unsuitable for IoT environments due to data size limitations. Lightweight encryption algorithms that preserve confidentiality, integrity, and authenticity can address these limitations. This paper proposes an efficient, lightweight method to encrypt and authenticate medical images in healthcare systems. The approach splits images into diagonal and non-diagonal blocks, and then processes them in two phases: (1) non-diagonal blocks are permuted using inter-block differences and XORed with diagonal blocks for substitution; (2) diagonal blocks are encrypted via AES and enhanced CBC mode with a tag mechanism for integrity. Security tests (histograms, correlation, entropy, NPCR, UACI) verify the scheme’s robustness. The results show that the model outperforms existing techniques in efficacy and attack resistance, making it viable for medical IoT and smart surveillance.

Keywords: lightweight encryption; medical image security; authentication; IoT; advanced encryption standard (AES); cipher block chaining (CBC) (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2025
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