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Blockchain-Based Authentication and Trust Management Mechanism for Smart Cities

Asif, Muhammad; Aziz, Zeeshan; Bin Ahmad, Maaz; Khalid, Adnan; Waris, Hammad Abdul; Gilani, Asfandyar

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Authors

Muhammad Asif

Maaz Bin Ahmad

Adnan Khalid

Hammad Abdul Waris

Asfandyar Gilani



Abstract

Security has always been the main concern for the internet of things (IoT)-based systems. Blockchain, with its decentralized and distributed design, prevents the risks of the existing centralized methodologies. Conventional security and privacy architectures are inapplicable in the spectrum of IoT due to its resource constraints. To overcome this problem, this paper presents a Blockchain-based security mechanism that enables secure authorized access to smart city resources. The presented mechanism comprises the ACE (Authentication and Authorization for Constrained Environments) framework-based authorization Blockchain and the OSCAR (Object Security Architecture for the Internet of Things) object security model. The Blockchain lays out a flexible and trustless authorization mechanism, while OSCAR makes use of a public ledger to structure multicast groups for authorized clients. Moreover, a meteor-based application is developed to provide a user-friendly interface for heterogeneous technologies belonging to the smart city. The users would be able to interact with and control their smart city resources such as traffic lights, smart electric meters, surveillance cameras, etc., through this application. To evaluate the performance and feasibility of the proposed mechanism, the authorization Blockchain is implemented on top of the Ethereum network. The authentication mechanism is developed in the node.js server and a smart city is simulated with the help of Raspberry Pi B+. Furthermore, mocha and chai frameworks are used to assess the performance of the system. Experimental results reveal that the authentication response time is less than 100 ms even if the average hand-shaking time increases with the number of clients.

Citation

Asif, M., Aziz, Z., Bin Ahmad, M., Khalid, A., Waris, H. A., & Gilani, A. (2022). Blockchain-Based Authentication and Trust Management Mechanism for Smart Cities. Sensors, 22(7), 2604. https://doi.org/10.3390/s22072604

Journal Article Type Article
Acceptance Date Mar 25, 2022
Online Publication Date Mar 29, 2022
Publication Date Mar 29, 2022
Deposit Date May 9, 2022
Publicly Available Date May 9, 2022
Journal Sensors
Publisher MDPI
Volume 22
Issue 7
Pages 2604
DOI https://doi.org/10.3390/s22072604
Keywords information security, blockchain, internet of things, smart cities, authentication, authorization, Ethereum
Publisher URL https://doi.org/10.3390/s22072604
Related Public URLs https://www.mdpi.com/1424-8220/22/7/2604?type=check_update&version=1

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