| Algorithm 2 Algorithm for Trust Evaluation Phase |
| Input: The trustiness of the node k |
| The node u is who sends a query against suspicious node w |
| Output: Determine how to perform trust evaluation for suspicious node w |
| if there are no nodes around suspicious node w to perform the trust evaluation then |
| gateway determine Gateway-assisted trust evaluation through physical inspection |
| else |
| if node w’s trustiness is higher than 0.6 then |
| gateway determine Gateway-independent trust evaluation through collaborative inspection |
| else |
| gateway determine Gateway-assisted trust evaluation through logical inspection |
| end if |
| end if |
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