A Blockchain-Based Multi-Cloud Storage Data Auditing Scheme to Locate Faults

【Author】 Zhang, Cheng; Xu, Yang; Hu, Yupeng; Wu, Jiajing; Ren, Ju; Zhang, Yaoxue

【Source】IEEE TRANSACTIONS ON CLOUD COMPUTING

【影响因子】5.697

【Abstract】Network storage services have benefited countless users worldwide due to the notable features of convenience, economy and high availability. Since a single service provider is not always reliable enough, more complex multi-cloud storage systems are developed for mitigating the data corruption risk. While a data auditing scheme is still needed in multi-cloud storage to help users confirm the integrity of their outsourced data. Unfortunately, most of the corresponding schemes rely on trusted institutions such as the centralized third-party auditor (TPA) and the cloud service organizer, and it is difficult to identify malicious service providers after service disputes. Therefore, we present a blockchain-based multi-cloud storage data auditing scheme to protect data integrity and accurately arbitrate service disputes. We not only introduce the blockchain to record the interactions among users, service providers, and organizers in data auditing process as evidence, but also employ the smart contract to detect service dispute, so as to enforce the untrusted organizer to honestly identify malicious service providers. We also use the blockchain network and homomorphic verifiable tags to achieve the low-cost batch verification without TPA. Theoretical analyses and experiments reveal that the scheme is effective in multi-cloud environments and the cost is acceptable.

【Keywords】Multi-cloud storage; blockchain; data auditing; dispute arbitration

【发表时间】2022 OCT 1

【收录时间】2023-01-21

【文献类型】理论模型

【主题类别】

区块链应用-实体经济-审计领域