Design and Analysis of a Provable Secure Two-Factor Authentication Protocol for Internet of Things

Table 4

Calculation cost comparison.

Protocol	User (ms)	Gateway (ms)	Sensor (ms)	Total (ms)	Communication cost (bits)
Amin et al. [40]	12  0.0882	18  0.045	6  0.0264	0.1596	9216
Chen et al. [41]	8  +  17.2552	3  + 2  16.1955	5  +  11.499	44.9497	4608
Wu et al. [28]	13  0.0637	3  + 2  16.1955	5  +  11.499	27.7582	8192
Sadri and Asaar [13]	6  +  +  34.4554	10  +  +  16.213	5  0.022	50.6904	5888
Our protocol	8  +  17.2522	10  +  +  16.213	5  0.022	33.4872	6400