A New Data Sharing Scheme Based on Blockchain

Abstract

With the development of social information and network technology, the era of big data has arrived. However, data security and privacy have become a bottleneck of big data development. To address this issue, the blockchain with distributed ledger as an important key technology provides an effective solution for data security in big data. In this paper, a system model based on blockchain for data sharing and security is proposed. Based on the model, a data sharing scheme has proposed. In the scheme, block consensus and data sharing as two important stages are highlighted. In the simulation, the result shows that the performance of proposed scheme is much higher than that of attribute-based encryption scheme when the size of the encrypting data is large.