A Lightweight Attribute-Based Security Scheme for Fog-Enabled Cyber Physical Systems

Table 7

Computational overhead.

Schemes	Setup	KeyGen	Encrypt	Decrypt	KeyRevoke	Total operations
Fog-CPS scheme		N/A
Odelu and Das [8]		N/A			N/A
Guo et al. [6]					N/A
Zhou et al. [9]					N/A
Yamada et al. [14]					N/A
Cheng et al. [12]					N/A

Note: : exponentiation operation; : pairing operation; : scalar point multiplication in the elliptic curve group .