Research on Secure Data Sharing Technology of Block Chain

Blockchain technology has attracted much attention since its emergence. Its unique characteristics of decentralization, trustworthiness and tamper-proof provide the possibility to build a more secure and effective data sharing platform. This paper first discusses the relevant knowledge of data sharing technology, explains how block chain realizes data sharing, and then analyzes existing data sharing schemes. It is also classified according to its core technology, so that researchers can quickly understand the existing data sharing schemes based on block chain, and can judge and choose research direction and technical route according to their own needs. This is also the value of this study. Finally, this paper analyzes the performance of four shared data schemes using experimental data from literature, and predicts the future development of sharing technology.