TFPPASV: A Three-Factor Privacy Preserving Authentication Scheme for VANETs

Table 4

Performance comparisons.

Scheme	Computation cost	RT (ms)	ME	BE	SO
Ours		2.6535	4	2560	1024
Xu et al. [10]		2.6535	4	2560	1024
Ma et al. [32]		7.5159	4	4992	832
Cui et al. [33]		2.6523	3	3840	512
Zhong et al. [34]		0.4426	3	4648	320

Note. RT: running time; ME: no. of message exchanges; BE: bit exchange; SO: storage overhead.