A Comparative Analysis on Blockchain versus Centralized Authentication Architectures for IoT-Enabled Smart Devices in Smart Cities: A Comprehensive Review, Recent Advances, and Future Research Directions

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Usman Khalil, Owais Ahmed Malik, Mueen Uddin, Chin-Ling Chen

Published: 10 Jul 2022, Last Modified: 06 Nov 2025SensorsEveryoneRevisionsCC BY-SA 4.0