The application relates to the technical field of e-government
data management, and particularly discloses a cross-department
data security sharing
system based on a government affair
blockchain, which comprises a data resource
perception module, a fusion strategy construction module, a sharing behavior evaluation module and an intelligent collaborative scheduling module. The scheme constructs a unified government affair data and
blockchain security sharing fusion model, establishes an accurate and quantitative mapping relationship between
data sharing operation instructions and
blockchain verifiable audit tracks, and accurately reflects the influence of data sensitivity levels, user roles and sharing contexts on
access control through a dynamic attribute-based
encryption strategy model and data-driven calibration. Through high-precision strategy
simulation and real-time monitoring, the
controllability and risks of
data sharing are quantified, access strategies are dynamically adjusted according to security situations, and intelligent contracts and optimization algorithms are used to automatically optimize between
data value maximization and risk minimization, so that the safety, compliance and efficiency of government affair
data sharing are ensured.