Leveraging Blockchain Technology for Making Secure IoT Networks

Abstract

The Internet of Things (IoT) has witnessed exponential growth, connected billions of devices, and enabled various applications of distributed and heterogeneous nature. The extensive embrace of IoT devices has sparked noteworthy apprehensions regarding security. The majority of these devices prioritize user-friendliness during manufacturing rather than robust security. Consequently, conventional security measures frequently prove inadequate in safeguarding the integrity, confidentiality, and accessibility of IoT networks. Together, these issues give rise to substantial threats to the entire system. Each IoT device generates a cryptographic hash of its data and records it on the blockchain. Smart contracts and consensus mechanisms can be utilized to facilitate node status management and consensus on the state of the IoT network. Integration of blockchain technology for detecting malicious activity in IoT networks brings several benefits, including increased transparency, data integrity assurance, and decentralized trust. Blockchain technology offers a trustless environment in which multiple parties can collaboratively verify and confirm the legitimacy of data and transactions. This characteristic is achieved through consensus algorithms like proof-of-work and proof-of-stake, effectively thwarting attempts by malicious entities to manipulate or jeopardize the integrity of the system. Blockchain&s;s resilience to attacks and tampering provides an additional layer of security for IoT systems. Nodes can refer to the blockchain for verifying the integrity and authenticity of the data generated by other nodes, enabling the identification and isolation of malicious actors in the network.