SAIFC: A Secure Authentication Scheme for IOV Based on Fog-Cloud Federation

Table 6

Comparison of the different schemes in terms of communication cost and the number of bits.

No	Schemes	Number of messages	Total bits
1	[21]	6	3392
2	[11]	6	8992
3	[15]	2	2272
4	[19]	3	1760
5	[20]	3	1760
6	[18]	6	2496
7	[17]	4	3024
8	[14]	4	1952
9	[13]	9	1280
10	SAIFC	7	1760