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Open AccessArticle

A Decentralized Privacy-Preserving Healthcare Blockchain for IoT

1
Institute of Computer Science, Polish Academy of Sciences, 01-248 Warsaw, Poland
2
Department of Mathematics and Computer Science, Brandon University, Brandon, MB R7A 6A9, Canada
3
Research Center for Interneural Computing, China Medical University, Taichung 40402, Taiwan
4
Department of Electronics and Communication, University of Allahabad, Allahabad 211002, India
5
Faculty of Mathematics, Informatics and Mechanics, University of Warsaw, 02-097 Warsaw, Poland
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(2), 326; https://doi.org/10.3390/s19020326
Received: 12 December 2018 / Revised: 2 January 2019 / Accepted: 10 January 2019 / Published: 15 January 2019
(This article belongs to the Special Issue Big Data Driven IoT for Smart Cities)
Medical care has become one of the most indispensable parts of human lives, leading to a dramatic increase in medical big data. To streamline the diagnosis and treatment process, healthcare professionals are now adopting Internet of Things (IoT)-based wearable technology. Recent years have witnessed billions of sensors, devices, and vehicles being connected through the Internet. One such technology—remote patient monitoring—is common nowadays for the treatment and care of patients. However, these technologies also pose grave privacy risks and security concerns about the data transfer and the logging of data transactions. These security and privacy problems of medical data could result from a delay in treatment progress, even endangering the patient’s life. We propose the use of a blockchain to provide secure management and analysis of healthcare big data. However, blockchains are computationally expensive, demand high bandwidth and extra computational power, and are therefore not completely suitable for most resource-constrained IoT devices meant for smart cities. In this work, we try to resolve the above-mentioned issues of using blockchain with IoT devices. We propose a novel framework of modified blockchain models suitable for IoT devices that rely on their distributed nature and other additional privacy and security properties of the network. These additional privacy and security properties in our model are based on advanced cryptographic primitives. The solutions given here make IoT application data and transactions more secure and anonymous over a blockchain-based network. View Full-Text
Keywords: blockchain; medical big data; Internet of Things; smart contract; Ethereum; data preservation; key management; authentication; ring signature; smart cities blockchain; medical big data; Internet of Things; smart contract; Ethereum; data preservation; key management; authentication; ring signature; smart cities
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Dwivedi, A.D.; Srivastava, G.; Dhar, S.; Singh, R. A Decentralized Privacy-Preserving Healthcare Blockchain for IoT. Sensors 2019, 19, 326.

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