Research Article
SAIFC: A Secure Authentication Scheme for IOV Based on Fog-Cloud Federation
Table 5
Comparison of the different schemes in terms of communication costs.
| No | Schemes | HF | ECC | PKE | PKD | SKE | SKD | Total cost | Total cost (ms) |
| 1 | [21] | 35 Thf | 4Teccm | 0TPKe | 0TPKd | 0TSKe | 0TSKd | 35 Thf + 4Teccm | 8.9845 | 2 | [11] | 8 Thf | 11Teccm | 0TPKe | 0TPKd | 0TSKe | 0TSKd | 8 Thf + 11Teccm | 24.5044 | 3 | [15] | 10 Thf | 6Teccm | 0TPKe | 0TPKd | 0TSKe | 0TSKd | 10 Thf + 6Teccm | 13.5518 | 4 | [19] | 9 Thf | 7Teccm | 0TPKe | 0TPKd | 0TSKe | 0TSKd | 9 Thf + 7Teccm | 15.8043 | 5 | [20] | 13 Thf | 8Teccm | 0TPKe | 0TPKd | 0TSKe | 0TSKd | 7 Thf + 8Teccm | 17.8379 | 6 | [18] | 17 Thf | 0Teccm | 0TPKe | 0TPKd | 0TSKe | 0TSKd | 17 Thf | 0.0391 | 7 | [17] | 17 Thf | 0Teccm | 0TPKe | 0TPKd | 0TSKe | 0TSKd | 17 Thf | 0.0391 | 8 | [14] | 12 Thf | 0Teccm | 0TPKe | 0TPKd | 2TSKe | 2TSKd | 12 Thf + 2TSKe + 2TSKd | 0.046 | 9 | [13] | 20 Thf | 0Teccm | 0TPKe | 0TPKd | 0TSKe | 0TSKd | 20 Thf | 0.046 | 10 | SAIFC | 30 Thf | 8Teccm | 0TPKe | 0TPKd | 0TSKe | 0TSKd | 30 Thf + 8Teccm | 17.877 |
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