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

Table 2

Comparison of computation overhead for health data sharing.

Schemes	Data encryption	Data decryption	Data reencryption key generation	Data reencryption
Yeh et al. [22]			—	—
EPPS [27]			—	—
Au et al. [20]
Wang et al. [25]
Our scheme