Authors: Mihaljević, Miodrag J. 
Knežević, Milica 
Urošević, Dragan 
Wang, Lianhai
Xu, Shujiang
Affiliations: Computer Science 
Mathematical Institute of the Serbian Academy of Sciences and Arts 
Title: An Approach for Blockchain and Symmetric Keys Broadcast Encryption Based Access Control in IoT
Journal: Symmetry
Volume: 15
Issue: 2
First page: 299
Issue Date: 2023
Rank: ~M22
ISSN: 2073-8994
DOI: 10.3390/sym15020299
Abstract: 
This paper considers the problem of data access control when the subscribers are IoT devices with initialization that cannot be updated during the entire life cycle. A generic framework and a particular instance for conditional data access control within IoT are proposed. The generic framework is based on the employment of a dedicated secret key-based broadcast encryption scheme where encrypted credentials for conditional data access is available in the blockchain and encrypted data subject to conditional access are available in an off-chain source of streaming data. Reduction of the keys management overhead in comparison with a straightforward decryption keys delivery is experimentally illustrated. An instance of the proposed framework built over the Ethereum blockchain platform is developed and experimentally evaluated.
Keywords: IoT | data access control | broadcast encryption | blockchain | Ethereum platform
Publisher: MDPI
Project: Advanced artificial intelligence techniques for analysis and design of system components based on trustworthy BlockChain technology - AI4TrustBC 

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