Secured IoT Data Management Using AES Encryption And Blockchain Technology

The swift expansion of IoT devices necessitates robust mechanisms to protect sensitive data from unauthorized access and tampering. This paper fulfills this requirement by integrating AES encryption and blockchain technology. IoT data is encrypted using dynamically generated private keys with AES in CBC mode, ensuring confidentiality, while a Flask application facilitates secure data processing. The encrypted data and metadata are stored on a Solidity-based smart contract, providing decentralized and tamper-proof storage. Results demonstrate enhanced data security, immutability, and traceability, making the framework scalable and suitable for modern IoT ecosystems. Analysis confirms the effectiveness of combining encryption and blockchain to mitigate security risks.