DSSPS

Data sharing plays an important role in the development of the Internet, and it is widely used in various fields. This paper focuses on the security issues in the process of data sharing, combined with blockchain and access control technology, a data sharing security protection scheme (DSSPS) based on consortium chain and Ciphertext-Policy Attribute-Based Encryption (CP-ABE) is proposed, and a resource sharing platform (RSPL) is designed. The scheme first classifies and stores data by setting up a double-chain architecture (record chain, and log chain) based on the consortium chain and three databases (attribute database, file database and index database); secondly, CP-ABE is used to control access to shared files. Achieve fine-grained access control and secure sharing. Finally, the security of the scheme is analyzed.