Sensor-Chain: A Scalable and Lightweight Blockchain Framework for the Internet of Things

Blockchain (BC) has gained a lot of interest because of its immutable nature and the security and privacy advantages that come with it. The Internet of Things (IoT) presents security and privacy concerns that BC has the ability to address. BC, though, is computationally. The IoT context is not appropriate for pricey, restricted scalability technology that also has large bandwidth overheads and delays. We suggest a tier-structured Lightweight Scalable BC (LSB) that is tailored to IoT needs. We investigate LSB in a smart home environment as a sample illustration of more extensive IoT uses. In a smart home, low-resource gadgets benefit from a centralised management that all incoming and outgoing requests are processed while creating shared keys for communication. By creating an overlay network where high resource devices collaborate to jointly run a public BC that provides end-to-end privacy and security, LSB enables decentralisation. To cut costs, the overlay is divided into various clusters, and each cluster leader is in charge of overseeing the public BC. LSB uses a number of optimisations, such as lightweight consensus, distributed trust, and throughput management techniques. Qualitative justifications show that LSB is resistant to various security assaults. Numerous simulations demonstrate that LSB improves BC scalability and reduces packet cost and latency when compared to comparable baselines.