Open Access

ARTICLE

Distributed Secure Storage Scheme Based on Sharding Blockchain

by Jin Wang^1,2, Chenchen Han¹, Xiaofeng Yu^3,*, Yongjun Ren⁴, R. Simon Sherratt⁵

1 School of Computer Science and Mathematics, Fujian University of Technology, Fuzhou, 350118, China
2 School of Computer & Communication Engineering, Changsha University of Science & Technology, Changsha, 410004, China
3 School of Business, Nanjing University, Nanjing, 210093, China
4 School of Computer, School of Software, School of Cyberspace Security, Engineering Research Center of Digital Forensics, Ministry of Education, Nanjing University of Information Science & Technology, Nanjing, 210044, China
5 Department of Biomedical Engineering, University of Reading, RG6 6AY, UK

* Corresponding Author: Xiaofeng Yu. Email:

Computers, Materials & Continua 2022, 70(3), 4485-4502. https://doi.org/10.32604/cmc.2022.020648

Received 01 June 2021; Accepted 17 July 2021; Issue published 11 October 2021

Abstract

Distributed storage can store data in multiple devices or servers to improve data security. However, in today's explosive growth of network data, traditional distributed storage scheme is faced with some severe challenges such as insufficient performance, data tampering, and data lose. A distributed storage scheme based on blockchain has been proposed to improve security and efficiency of traditional distributed storage. Under this scheme, the following improvements have been made in this paper. This paper first analyzes the problems faced by distributed storage. Then proposed to build a new distributed storage blockchain scheme with sharding blockchain. The proposed scheme realizes the partitioning of the network and nodes by means of blockchain sharding technology, which can improve the efficiency of data verification between nodes. In addition, this paper uses polynomial commitment to construct a new verifiable secret share scheme called PolyVSS. This new scheme is one of the foundations for building our improved distributed storage blockchain scheme. Compared with the previous scheme, our new scheme does not require a trusted third party and has some new features such as homomorphic and batch opening. The security of VSS can be further improved. Experimental comparisons show that the proposed scheme significantly reduces storage and communication costs.

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Citations