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 confidentialityPKEIBECP-ABECP-ABECP-ABECP-ABE
Health data access controlConsent-basedIdentity-basedAttribute-basedAttribute-basedAttribute-basedAttribute-based
Outsourced encryptionNoNoNoNoYes
Outsourced decryptionNoNoNoYesYes
Data authorizationYesYesYesNoNoYes
Social data collaborationNoNoNoYesYesYes