Attribute-based sharing method for cloud data with fine-grained dynamic access control

Due to the number of individuals who rely on cloud computing, there are massive issues with sharing data over the cloud.To enhance the security and flexibility of data sharing, this paper proposes a cloud-based data attribute-based sharing method grounded in fine-grained dynamic access control.This approach first introduces a dynamic revocation mechanism to ensure granularity in permission management.Subsequently, it combines attribute encryption with a weight exchange mechanism to further enhance data access control.Finally, experimental validation confirms the method's performance.The findings indicate that the proposed solution is more accurate by 5.2%, more inclined to detect relevant information by 6.3% and it is 7.8% better than the conventional methods.The model is highly scalable and efficient in dealing with large scale data, and it satisfies security requirements in data exchange in the cloud.