Open Access

ARTICLE

Efficient Certificateless Authenticated Key Agreement for Blockchain-Enabled Internet of Medical Things

Chaoyang Li¹, Yanbu Guo¹, Mianxiong Dong^2,*, Gang Xu³, Xiu-Bo Chen⁴, Jian Li⁴, Kaoru Ota²

1 College of Software Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450002, China
2 Department of Sciences and Informatics, Muroran Institution of Technology, Muroran, 050-8585, Japan
3 School of Computing Science and Technology, North China University of Technology, Beijing, 100144, China
4 Information Security Centre, State Key Laboratory of Networking and Switching Technology, Beijing University of Post and Telecommunications, Beijing, 100876, China

* Corresponding Author: Mianxiong Dong. Email: -it.ac.jp

Computers, Materials & Continua 2023, 75(1), 2043-2059. https://doi.org/10.32604/cmc.2023.033670

Received 24 June 2022; Accepted 22 September 2022; Issue published 06 February 2023

Abstract

Internet of Medical Things (IoMT) plays an essential role in collecting and managing personal medical data. In recent years, blockchain technology has put power in traditional IoMT systems for data sharing between different medical institutions and improved the utilization of medical data. However, some problems in the information transfer process between wireless medical devices and mobile medical apps, such as information leakage and privacy disclosure. This paper first designs a cross-device key agreement model for blockchain-enabled IoMT. This model can establish a key agreement mechanism for secure medical data sharing. Meanwhile, a certificateless authenticated key agreement (KA) protocol has been proposed to strengthen the information transfer security in the cross-device key agreement model. The proposed KA protocol only requires one exchange of messages between the two parties, which can improve the protocol execution efficiency. Then, any unauthorized tampering of the transmitted signed message sent by the sender can be detected by the receiver, so this can guarantee the success of the establishment of a session key between the strange entities. The blockchain ledger can ensure that the medical data cannot be tampered with, and the certificateless mechanism can weaken the key escrow problem. Moreover, the security proof and performance analysis are given, which show that the proposed model and KA protocol are more secure and efficient than other schemes in similar literature.

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Keywords

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