A Data Security Exchange and Sharing System Construction Method and Perfomance Evaluation

Sensitive data faces security risks of theft, tampering, or abuse during the exchange and sharing process. This paper proposes a new method for constructing a data security exchange and sharing system based on the above risks, and improves attribute-based access control technology to achieve policy conflict resolution through dynamic authentication and multi-party joint authorization. On this basis, real-time recording technology based on Merkle tree is used to achieve tamper proof forensics and precise traceability of data. The experimental results show that the data security exchange and sharing system has the advantages of high encryption speed as well as search efficiency, and has the characteristics of supporting multi-party joint authorization and short response time for access control.