User authentication of industrial internet of things (IIoT) through Blockchain

The Industrial IoT is starting an enormous advancement occasion in the industrial epoch. Data security as well as privacy becomes a challenge in almost every field in the real life for the duration of monitoring and collection of data in Industrial Internet of Things (IIoT) applications. The security and privacy of data in IIoT depends on the user's reliability that can be obtained by using the user authentication scheme otherwise unable to secure the IIoT applications data. Many authors have proposed the user authentication schemes in industrial internet of things who suffer from some hindrances such as data security, throughput, single point of failure, storage problem and latency (due to which increases the eavesdropping attacks chances). Therefore, to eliminate the above security issues, this paper proposes a new hybrid authentication approach instead of that also increases the throughput of IIoT applications, reduces the latency as well as enhances the accuracy of IIoT users. To create smart contracts of user authentication approaches by using the PKI and ECC algorithms, whereas it helps to achieve the privacy preservation. Instead of that, ECC that constructs the trustworthy user authentication blockchain scheme which enhance the privacy further as well as helps to maintain the number of keys along, every time keys are updated continuously. Moreover, we implement the proposed approach on the Ethereum blockchain and put all the data through smart contract on the decentralized IPFS cloud server which is transparent, secure, traceable, and storage utilization. Only authenticated users can interface with IIoT applications, even if someone tries to corrupt them, and then revoke the digital certificate from the user. It will be known from the performance of this paper that the proposed approach not only provides the privacy of the users but also obtains the high authentication accuracy, throughput and reduces the latency in comparison of existing approach.