The paper addresses the application of blockchain technology to enhance security and privacy in smart cities, with a particular focus on IoT systems. Smart cities rely on a large number of devices and sensors that collect and exchange data in real-time, which creates significant challenges regarding data security and protection. Centralized data storage systems and numerous IoT devices are vulnerable to cyberattacks, which is why blockchain technology is presented as a potential solution. Through decentralized architecture and smart contracts, blockchain enables secure data storage and exchange, reducing the risk of single points of failure and unauthorized access. The paper analyzes the use of private and public blockchain platforms, highlighting the advantages and disadvantages of each. It also discusses challenges such as scalability and energy consumption, as well as opportunities for further development of this technology to improve security in smart cities. The conclusion is that blockchain offers significant potential, but further research is necessary to overcome technical challenges.
Matijašević et al. (Wed,) studied this question.
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