Blockchain Enabled Cloud Data Storage Supporting Deduplication With Fair Remittance

Abstract In cloud computing environment data redundancy and data integrity management are the consequential issues. They result in huge space wastage and compromises data security and data accuracy. Data deduplication and data auditing are the techniques used to efficiently reduce storage space and to verify the integrity of the cloud stored data. Most of the existing data deduplication and auditing algorithms are mainly focusing on static data storage environment which does not efficiently fits to the dynamic nature of cloud storage. Integrating data deduplication with integrity verification is very challenging to handle and such existing systems suffers from faking of audit results and data ownership leakage. Also, existing cloud data auditing schemes does not provide compensation to users, if their data integrity is compromised. Blockchain technology with its key features, provides security, trust and efficiency to handle data storage in cloud. In order to solve the issues in existing data auditing integrated deduplication systems, this paper proposes Blockchain incorporated secure cloud data storage system supporting data auditing and deduplication with fair remittance. The implementation results and security analysis confirm that the proposed system outperforms well in terms of data integrity verification and deduplication with enhanced accuracy and security compared to state of the arts.