Enabling a Secure IoT Environment Using a Blockchain-Based Local-Global Consensus Manager

Abstract

The Internet of Things (IoT) refers to the network of interconnected devices that can communicate and share data over the Internet. The widespread adoption of smart devices within Internet of Things (IoT) networks poses considerable security challenges for their communication. To address these issues, blockchain technology, known for its decentralized and distributed nature, offers potential solutions within consensus-based authentication in IoT networks. This paper presents a novel approach called the local and global layer blockchain model, which aims to enhance security while simplifying implementation. The model leverages the concept of clustering to establish a local-global architecture, with cluster heads assuming responsibility for local authentication and authorization. Implementing a local private blockchain facilitates seamless communication between cluster heads and relevant base stations. This blockchain implementation enhances credibility assurance, strengthens security, and provides an effective network authentication mechanism. Simulation results indicate that the proposed algorithm outperforms previously reported methods. The proposed model achieved an average coverage per node of 0.9, which is superior to baseline models. Additionally, the lightweight blockchain model proposed in this paper demonstrates superior capabilities in achieving balanced network latency and throughput compared to traditional global blockchain approaches.

IoT Security Model for Smart Cities based on a Metamodeling Approach

“…Blockchain is effective for decentralized Identity and Access Management (IAM), and manufacturers can integrate it seamlessly into existing IoT systems without redeveloping them. Blockchains are designed to simplify implementation while increasing security [28], in which, as a result of clustering, authentication and authorization were handled locally by cluster heads. Authors in [29] examined the IoT ecosystem from cybersecurity, privacy, and connectivity perspectives.…”

“…[27] A proof-of-concept design is demonstrated and a solidity smart contract-based IAM solution is implemented, and the challenges associated with integrating blockchain in existing IoT systems are identified, which prevents manufacturers from redesigning or redeveloping IoT systems. [28] A blockchain model that simplifies implementation while enhancing security, handling authentication and authorization locally by cluster heads, and leveraging the concept of clustering is proposed. [29] The IoT ecosystem is examined in depth, focusing primarily on cybersecurity, privacy, and connectivity.…”