Secured Data Integrity Scheme for Internet of Things

The provision of security to any information in an IoT network is a big challenge, which must be given the top priority for many current and future applications of IoT. Traditional data integrity verification approaches only use encryption algorithms to secure information, depending on Third-Party Auditors (TPAs). The blockchain’s basic principle is that information produced by users or nodes is tested for accuracy and cannot be altered once it is updated on the blockchain. Blockchain based data integrity schemes can effectively overcome TPA’s issues. In this paper, we propose a blockchain based data integrity technique with a bilinear design for IoT information. We achieve data integrity according to the characteristics of bilinear design in the form of blockchain communications. The proposed blockchain based framework for data integrity verification consists of different entities such as client, Key Generation Centre (KGC), cloud storage server, and blockchain. Proposed data integrity verification operates in three stages: Setup stage, Processing stage and Verification stage. We analysed the prformance of proposed scheme using different parameters like end to end delay, memory utilazation and accuracy rate.