Blockchain-based Wireless Sensor Network Security Through Authentication and Cluster Head Selection

Internet of Things node authentication via blockchain is discussed in this study (loST). Each node's credentials are verified as part of network security. Cluster leaders receive this data from sensor nodes and process it using loST. CHs gather information. They are exhausted by the additional workload. DDR-LEACHE was suggested as a solution to this issue. DDR-LEACH can replace CHs with conventional nodes if distance from the BS, residual energy and degree are taken into account. The cost of adding additional data to the blockchain is prohibitive. This problem can be solved by utilising IPFS, an external data store. Because AES 128-bit encryption is superior to other approaches, IPFS employs it to safeguard data. For transactions, proof-of-work requires too much computational resources. Consensus proof of authority is used as a basis for this solution (PoA). The model's efficiency and efficacy are demonstrated by the simulation results. According to a comparison, DDR-LEACH improves network lifetime while consuming less energy than LEACH. IPFS storage and service provisioning transaction costs can be reduced by using PoA. We can forecast how long it will take by comparing AES 128-bit encryption to the existing method. Smart contract security is examined. MITM and Sybil were used to test our system's resilience.