Efficient multi-KGC certificateless signature scheme for cross-device authentication in internet of medical things

Chaoyang Li, Bohao Jiang, Chaonan Shen (), Rui Chen and Xiangjun Xin
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Chaoyang Li: Zhengzhou University of Light Industry
Bohao Jiang: Zhengzhou University of Light Industry
Chaonan Shen: Henan Finance University
Rui Chen: Zhengzhou University of Light Industry
Xiangjun Xin: Zhengzhou University of Light Industry

Telecommunication Systems: Modelling, Analysis, Design and Management, 2025, vol. 88, issue 2, No 29, 14 pages

Abstract: Abstract Blockchain-enabled Internet of medical things (BIoMT) has been introduced to solve the centralized management problem in traditional systems. However, with the smart medical devices number increasing, cross-device authentication problem becomes more critical for medical data sharing among different smart medical devices. Facing these problems, a multi-KGC authentication model has been designed for cross-device data and entity authentication in BIoMT systems. This model serves the key generator centers (KGCs) in different BIoMT systems as the maintaining nodes, which can balance the competition and improve the sense of participation. Meanwhile, this KGC union also has the responsibility to generate keys for new system. This mechanism can guarantee that the key replacement attacks mounted by any less than t KGCs are ineffective to a target user. Then, to weaken the ability of KGC union, a certificateless signature (CLS) scheme with t KGCs has been proposed. The user’s final private key is created by combing the secret value and t partial private keys created by different KGCs. In addition, the security proof shows that this CLS scheme can resist the super-level attack from two types of adversaries. The comparisons of time and energy consumption show that this CLS scheme is efficient than similar schemes in other literature.

Keywords: BIoMT; Multi-KGC; Cross-device authentication; Certificateless signature (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1007/s11235-025-01292-0

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