Fine-Grained Revocation

Definition ∞ Fine-grained revocation allows for the precise removal of access rights to specific data or functionalities within a system. This capability differs from broad revocation by enabling the selective termination of permissions for individual data elements or user actions, rather than an entire user account or data set. In decentralized systems, it requires advanced cryptographic techniques or smart contract logic to ensure that revoked access is universally and immutably enforced across the network. It offers enhanced security and control over digital information, particularly for sensitive or proprietary data.
Context ∞ Fine-grained revocation is a significant technical challenge and an active area of research in blockchain security and decentralized identity management. News reports discuss its importance for enterprise blockchain solutions where granular control over data sharing is a regulatory and business requirement. Developments in attribute-based encryption and zero-knowledge proofs aim to provide more practical implementations of this advanced security feature.