Delegated Key-Policy Attribute-Based Set Intersection over Outsourced Encrypted Data Sets for CloudIoT

Table 1

Property summary for PSI solutions in the literature and KP-ABSI in this paper. PSI delegation means that the data owners can delegate set intersection operations to the cloud. Outsourced encrypted data set means it can do PSI over outsourced encrypted data sets in the cloud. Fine-grained authorization means that it supports attribute-based access control policy.

Schemes	PSI delegation	Outsourced encrypted data sets	Fine-grained authorization
Two-party PSI [9, 10]	✕	✕	✕
Three-party PSI [5, 12]	✓	✓	✕
AB-PSI [8]	✓	✕	✓
KP-ABSI	✓	✓	✓