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Title	A Decentralised Multi-Authority Attribute-Based Encryption For Secure And Scalable Iot Access Control
ID_Doc	1273
Authors	Wu C.-Y.; Huang K.-H.; Hsu C.-Y.
Year	2025
Published	Applied Sciences (Switzerland), 15, 7
DOI	http://dx.doi.org/10.3390/app15073890
Abstract	This study presents a decentralised ciphertext-policy attribute-based encryption (CP-ABE) scheme designed for secure and efficient access control in resource-constrained Internet-of-Things (IoT) environments. By utilising multi-authority architecture and outsourced computation, the scheme enhances scalability, simplifies key management by eliminating reliance on a certificate authority (CA), and ensures data confidentiality through randomised proxy keys. It is particularly suited for multi-scenario IoT applications involving information sharing, such as smart cities or industrial automation in strategic alliances or conglomerates. Demonstrating security against chosen-plaintext attacks under the decisional bilinear Diffie–Hellman assumption, the scheme offers a practical and scalable solution for decentralised access control. © 2025 by the authors.
Author Keywords	decentralised access control; multi-authority ABE; multi-scenario IoT; outsourcing; secure access

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