Title: Enhancing patient privacy and data security through blockchain technology in healthcare

Authors: Karima Djouadi; Abdelkader Belkhir

Addresses: Faculty of Computer Science, University of Science and Technology Houari Boumediene, Bab Ezzouar, Algiers, Algeria ' Faculty of Computer Science, University of Science and Technology Houari Boumediene, Bab Ezzouar, Algiers, Algeria

Abstract: Nowadays, advancements in healthcare systems focus on the utilisation of medical sensors to capture various vital patient parameters, facilitating remote medical monitoring and early disease detection. However, implementing such systems necessitates the strict adherence to certain prerequisites. These include upholding patient privacy, ensuring the confidentiality and integrity of medical data, and guaranteeing system availability. These aspects are paramount as they directly impact human lives, making security measures fundamental for these systems. Considering the paramount criteria revolve around service quality, particularly emphasising low latency and rapid response times. In this paper, we introduce a healthcare system tailored for patient monitoring, addressing these crucial issues by leveraging fog computing. We also prioritise security by incorporating appropriate encryption and hashing mechanisms. Furthermore, our solution is anchored in blockchain technology, which ensures system decentralisation, thereby enhancing availability, data integrity, and confidentiality through its immutable nature.

Keywords: healthcare; data privacy; security; data integration; blockchain; data confidentiality.

DOI: 10.1504/IJEH.2026.156181

International Journal of Electronic Healthcare, 2026 Vol.14 No.3, pp.230 - 263

Received: 08 Apr 2025
Accepted: 01 Apr 2026
Published online: 07 Sep 2026 *

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