A Robust IoT-Based Three-Factor Authentication Scheme for Cloud Computing Resistant to Session Key Exposure

Table 5

Computation and communication costs and smart card storage cost of related schemes.

	Computation overhead			Running time (ms)	Communication cost (bits)	Storage cost (bits)
	User	Server	CS
Zhou et al. [26]				18	3584	640
Amin et al. [21]				11.5	2560	512
Kumari et al. [20]				554.64	2624	576
Mo et al. [25]			−	385.998	960	712
Ghani et al. [35]				21.4	1792	384
Martinez-Pelaez et al. [36]				89.1	3456	640
Our scheme				159.1	2304	532