Design and Implementation of Access Control for Pension Data : A Smart Contract Approach.

With the development of the Blockchain 3.0 era, there is an increased focus on combining smart contracts with other technologies. In the pension data scenario, traditional access control methods are no longer applicable due to complex data objects, numerous data operations, high granularity requirements and the need to support scalability. To address these issues, a more secure and flexible access control scheme is required. Therefore, this research abstractly describes the specific scenarios under pension data applications, combines smart contracts with an attribute-based access control model, designs and implements three smart contracts based on the Hyperledger Fabric blockchain architecture: Drive Contract, Access Contract, and Policy Contract. The solution has completed performance testing and can remain stable in the face of a large number of concurrent requests.