Cloud Data Deduplication Scheme Based on Blockchain
Pengliang Shi, Dongning Hao · 2023
To address the problem of untrustworthiness among entities faced in the process of data deduplication in cloud storage environment, this paper proposes a cloud data deduplication scheme based on blockchain. Firstly, to ensure the trustworthiness of data ownership proof in the data deduplication process, a data ownership verification algorithm based on random location sampling is designed with the help of blockchain technology and Merkle hash tree; Secondly, an oblivious pseudo-random protocol is used to obtain convergent encryption key to facilitate deduplication by cloud servers provides. Finally, the scheme security is proved by conducting security analysis, while simulation experiments are conducted to verify the effectiveness of the scheme.