Journal of Applied Sciences ›› 2021, Vol. 39 ›› Issue (1): 164-173.doi: 10.3969/j.issn.0255-8297.2021.01.014

• Blockchain • Previous Articles    

Cloud Storage Data Integrity Verification Scheme Based on Blockchain

LIU Feng, ZHAO Junfeng   

  1. College of Computer Science, Inner Mongolia University, Hohhot 010021, Inner Mongolia, China
  • Received:2020-11-03 Published:2021-02-04

Abstract: Aiming at the problems existing in data integrity of cloud storage services, a blockchain-based cloud storage data integrity verification scheme is proposed by referring to the current remote data integrity verification scheme. Firstly, an integrity certificate is stored in a tamper-proof blockchain, thus an accountable data integrity certificate is constructed. At the same time, the third-party auditor is replaced by the smart contract in the blockchain to verify the integrity of the data. In the verification stage, the integrity verification of data copies is added, and the cloud storage service is forced to store at least one data copy. In addition, a third-party arbitration organization is introduced for the first time, which uses the accountable data integrity certificate to arbitrate the integrity of illegal requests from malicious cloud storage providers and users. Finally, the proposed scheme is proved to be safe and feasible by analysis and experiment.

Key words: data integrity, blockchain, cloud storage, multiple-replica

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