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InfoResearchPeer-reviewed
Toward Efficient Multi-User Access Control Encrypted Search for Web Data Management
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Summary
The paper introduces SEOMA, described as the first multi-keyword encrypted search primitive that supports both owner authentication and multi-user access control for web data management. It uses attribute encryption for data owner authentication and a policy tree with linear secret-sharing for hierarchical user access control, with security shown in a random oracle model by reduction to the DBDH and CBDH problems. Computation and communication overhead is reported as only 0.05-0.4× and 0.07-0.47× that of prior schemes.