A blockchain-based enhanced security system for IoT platforms

With technology advancing at an unprecedented pace, the world is currently experiencing a profound transformation driven by the rapid growth of the Internet of Things and the emergence of blockchain technology. The Internet of Things has emerged as a powerful force, connecting numerous devices and sensors to collect and exchange vast amounts of data. However, effectively managing and securing this sensor data presents significant challenges. Concurrently, blockchain technology has gained considerable attention for its potential to revolutionize data management and ensure trust and transparency across various domains. The convergence of IoT and blockchain holds immense promise for addressing the limitations of traditional data management systems. This study aims to address the challenges associated with efficient sensor data management. It proposes the integration of blockchain technology with a user-friendly web-based interface to enhance data management, security, and reliability. To achieve this, by building a local blockchain network using ganache, smart contract writen in solidity language, a user-friendly web interface was developed utilizing HTML, CSS, and JavaScript, and connect them with virtual sensors. The virtual sensor send reading to the web interface. This interface collect the reading from differante sensor and send it to the smart contract. The system leverages smart contracts on the Ethereum blockchain to ensure data integrity, automate processes, and enhance security. The integration of blockchain technology offers significant benefits for sensor data management. By utilizing the decentralized nature of the blockchain, the system provides a robust infrastructure for storing and retrieving sensor readings. Smart contracts enable tamper-proof data transactions, ensuring transparency and immutability of the data stored on the blockchain. The implementation of the proposed system has yielded promising results. The web interface facilitates seamless interaction with sensor data, improving user experience and accessibility. The integration of smart contracts ensures secure and verifiable data transactions, reducing the risk of data manipulation, and enhancing trust in the system. The integration of blockchain technology in sensor data management has proven to be effective in improving data security, reliability, and accessibility. The developed web interface and smart contract integration provide a solid foundation for future advancements in the field. Future work could involve deploying the system on a real blockchain network and connecting it to real sensors through oracles, further enhancing its practicality and real-world applicability. This thesis contributes to the advancement of sensor data management systems, offering potential applications in various domains that require reliable and secure data handling. By combining blockchain technology, a user-friendly web interface, and smart contracts, the thesis provides a comprehensive solution for enhanced sensor data management.