Fine-Grained Task Access Control System for Mobile Crowdsensing

Table 4

Comparison in computation.

[26]				—	—
[28]			—	—
Our system

stand for the exponentiation operation in and . stands for the operation in . stands for the billnear pairing operation. There are positive attributes, negative attributes, and wildcards in our system, and [28], 3 attributes in Ref. [26].