Article Published In Vol.8 (July-Aug 2020)

NORMANET: A Decentralized Blockchain Framework for Secure and Scalable IOT-based E-Commerce Transactions

Author : Venkata Surya Bhavana Harish Gollavilli and R. Pushpakumar

The rise of IoT-based e-commerce introduces new challenges in managing decentralized, autonomous transactions securely and efficiently. Current blockchain solutions often suffer from high computational overhead and lack supervision capabilities, hindering their adoption in IoT environments. This study aims to propose and evaluate NormaNet, a decentralized blockchain framework designed to address the scalability, security, and legal supervision challenges in IoT-based e-commerce transactions. The study employs a three-layer sharding blockchain network to enhance transaction efficiency, coupled with a decentralized Public-Key Encryption with Keyword Search (PEKS) scheme for privacy-preserving supervision. The framework is evaluated using a digital marketing dataset from Kaggle to simulate e-commerce transactions. NormaNet demonstrated significant improvements, achieving an average transactions-per-second (TPS) of 113.69 on IoT devices such as Raspberry Pi, with transaction latency as low as 0.0088 seconds per transaction. Additionally, the decentralized supervision model achieved 100% accuracy in identifying illegal transactions, ensuring data integrity and privacy. Energy consumption was optimized, with an average of 0.15 Wh per transaction for IoT devices. The framework also scaled efficiently, supporting up to 50 IoT devices while maintaining low latency and consistent performance. NormaNet offers a robust solution for scaling IoT-based e-commerce while ensuring privacy and legal supervision, paving the way for secure, decentralized, and efficient autonomous transaction systems in real-world applications.

Keywords: IoT-based e-commerce, Blockchain, Decentralized supervision, Sharding, PEKS, Security, Energy consumption