Secure Access Control to Data in Off-Chain Storage in Blockchain-Based Consent Systems

Data access control is a crucial aspect of data management. Actors who want to share need systems manage consent in order decide can their data. This guarantees the privacy data, which often sensitive. As secure distributed ledger, blockchain widely used today for access. However, not ideal storing large volumes due its characteristics. Therefore, it coupled with off-chain facilitate storage these kinds located outside require security procedures. article proposes securing mechanism based on encryption blockchain-based systems. The protocol uses symmetric key system, prevents reading stored sphere by malicious actors would have mechanism’s set up allows each be encrypted that anchored blockchain. then obtained owner and read