Blockchain-Based Iot Security and Performance Analysis

The Internet of Things (IoT) enables devices to connect and exchange data, revolutionizing industries and daily life. However, the rapid growth of IoT devices has introduced significant security challenges, including cyber-attacks, data breaches, and unauthorized access. This study explores the integration of blockchain technology, particularly Hyperledger Fabric, to enhance IoT security. With its permissioned structure and decentralized approach, blockchain ensures secure data storage, integrity, and confidentiality. Hyperledger Fabric’s modular architecture offers organizations the flexibility to address these security needs effectively. Using the OPNET simulation tool, the study analyses the performance of IoT networks transmitting blockchain-encrypted packets. Results show that blockchain integration enhances security, strengthens user authentication, and prevents unauthorized access. These findings highlight blockchain's transformative potential for IoT security, offering practical solutions for industrial applications and emphasizing the need for continued research in this critical field.