Blockchain Based Secure Model for Sensor Data in Wireless Sensor Network

Abstract

Sensor nodes in Wireless Sensor Networks (WSNs) are known for fast data transfer thus, there is a need of decentralized authentication authority for the task of secure and transparent migration of the data from the nodes at a global stage in the entire network. Thus we need a Blockchain(BC) based network which involves transactions which can be duplicated and be spread across multiple nodes in a peer-peer network enabling mutual trust and data immutability enabling the network to go on and on in case some nodes get compromised or die due to heavy energy consumption. However, BC involves consensus as well before the chain is updated and traditional Proof of Work(PoW)method were being used for consensus and which we all know, consume high energy while utilizing large computational power and which makes it unfit for WSNs given they send data at a faster rate and will not be able to bear such high strain. Thus, we can either move towards an improved Proof of Stake(PoS) based method or any popular consensus method like Practical Byzatine Fault Tolerance(PBFT). We also plan to stick to a single base station(BS) having a lot many gateway nodes which perform the BC updation after consensus based on data received from the nodes.