Table 4.
Estimated efficiency comparison.
| Protocol | Computational Cost | ||
|---|---|---|---|
|
| |||
| User | Sensor | Gateway | |
| Yeh et al.'s protocol | 2.5M | 3M | 3M |
| Shi et al.'s protocol | 3M | 2M | 1M |
| Our protocol | 3M | 2M | 1M |
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