Secure and Privacy-Preserving Data Sharing and Collaboration in Mobile Healthcare Social Networks of Smart Cities

Table 1

Functionality comparison of data sharing schemes in MHSN.

	Zhang et al. [14]	Wang et al. [25]	Au et al. [20]	PEC [26]	EPPS [27]	Our scheme
Health data confidentiality	PKE	IBE	CP-ABE	CP-ABE	CP-ABE	CP-ABE
Health data access control	Consent-based	Identity-based	Attribute-based	Attribute-based	Attribute-based	Attribute-based
Outsourced encryption	—	No	No	No	No	Yes
Outsourced decryption	—	No	No	No	Yes	Yes
Data authorization	Yes	Yes	Yes	No	No	Yes
Social data collaboration	No	No	No	Yes	Yes	Yes