Blockchain Based Smart Contract to Enhance Security in Smart City

In the realm of future smart system development, one domain poised for significant growth is the emergence of smart cities worldwide, which aim to enhance people's quality of life. In fact, a smart city is characterized by the integration of a large volume of data and wireless communication enabled services, encompassing automated healthcare, smart transportation, home automation, smart parking, and traffic management, among others. However, the rapid growth of smart cities presents challenges in ensuring secure and reliable exchange of information between IoT devices and entities within the smart city ecosystem due to the enormous amount of data traffic generated by intelligent information systems. To address these challenges, the deployment of blockchain technology within smart cities holds promise for improving data integrity and facilitating the transparent, reliable, secure, and equitable delivery of services and applications. This paper explores the integration of Ethereum blockchain, smart city concepts, and the InterPlanetary File System (IPFS), investigating the potential for implementing an Ethereum blockchain-based smart contract on a smart city system. Finally, the proposed architecture is simulated in a limited environment, yielding results that demonstrate its feasibility.