Blockchain-Based Remote Data Integrity Auditing Schemewith Deduplication Mechanism
Shuai Feng, Lunzhi Deng, Yan Gao, Yaying Wu, Jian Wen · Research Square · 2024
Abstract Remote data integrity auditing (RDIA) schemes can inspect the integrity of outsourced data. Anddeduplication improves the utilization of cloud storage space. Therefore, a considerable number ofremote data integrity auditing schemes with deduplication mechanism (RDIA-DE) have been proposedby researchers. However, most of these schemes suffer from the following shortcomings. Initially,these schemes rely on honest and trustworthy third-party auditors (TPAs), which were difficult toachieve in reality. Additionally, the computational overhead of the proof-of-ownership (PoW) algorithmsincreases linearly with the number of challenged data blocks. In this paper, we put forward anovel RDIA-DE scheme based on blockchain. This scheme utilizes smart contracts to conduct dataintegrity audits, thereby eliminating the dependency on TPA and penalizing malicious cloud storageproviders. Subsequently, we provided security proofs under the random oracle model (ROM). Ultimately,we conducted a performance analysis on six RDIA-DE schemes. The results demonstrate thatthe new scheme enjoys significant efficiency advantages.