Privacy-Preserving Task Distribution Mechanism with Cloud-Edge IoT for the Mobile Crowdsensing

Table 1

Properties comparisons.

Schemes	F1	F2	F3	F4	F5	F6
ABKS-SM [28]	LSSS, AND-gate	CPA, CKA	Semi	×	×	√
FGTAC [10]	AND-gate	CPA, CKA	Fully	√	√	√
Scheme 1	AND-gate	CPA, CKA	Semi	×	×	√
Scheme 2	AND-gate	CPA, CKA	Semi	√	√	√

Notations: F1: access structure; F2: security level; F3: security requirement of the crowdsensing platform; F4: fast search; F5: lightweight decryption; F6: policy hidden.