Abstract
Routing strategy is one of the most important researches in Opportunistic Internet of Things (IoT), and it highly influences the efficiency of data transmission. In this paper, a hybrid Opportunistic IoT secure routing strategy based on node intimacy and trust value (HIRouter) is proposed to resolve the problem of unbalanced transmission efficiency and security in the message delivery process. According to the records of node encounter and message forwarding, the strategy proposed in this paper can calculate nodes’ intimacy and trust value. The messages are then forwarded based on the intimacy and trust value between nodes. Experimental results verify that HIRouter algorithm we proposed can improve the message delivery rates and reduce the overhead rate in the Opportunistic IoT with dense nodes and frequent interactions between nodes.
Highlights
IoT is a network that uses sensing devices to connect objects and networks and enable objects to interact and exchange information, achieve intelligent identification and management
Several routing algorithms have been proposed. e most prominent routing algorithm is the epidemic algorithm. Nodes can forward their information to every node they encounter in the network before reaching the destination node [24]. e node of the spray and wait (S&W) algorithm produces L message copies for L neighboring nodes; the L nodes that receive the copies seek the destination node [25,26,27,28]. e PROPHET algorithm forwards messages based on the historical information of node encounters 29
A hybrid opportunistic IoT secure routing strategy based on node intimacy and the trust value is proposed. e routing strategy mainly calculates the mixed utility value between nodes based on the encounters between the nodes and the message-forwarding path. e mixed utility value is used as the basis for message forwarding. is strategy considers the encounter situations between the nodes and successful message-forwarding records to ensure that messages are forwarded to the nodes with high intimacy and trust value thereby the strategy balances the efficiency and security of data forwarding
Summary
IoT is a network that uses sensing devices to connect objects and networks and enable objects to interact and exchange information, achieve intelligent identification and management. It is mainly used in fields such as intelligent transportation, intelligent logistics, and smart cities. Nodes can forward their information to every node they encounter in the network before reaching the destination node [24]. E PROPHET algorithm forwards messages based on the historical information of node encounters 29. Using the historical encounter information between nodes, the PROPHET routing algorithm formulates message-forwarding strategies; updating the message-. A hybrid Opportunistic IoT secure routing strategy based on node intimacy and trust value is proposed. Messages are forwarded from nodes with low mixed utility values to nodes with high mixed utility values until the destination node is reached. e probability of messages being forwarded to selfish and malicious nodes is reduced, which laterally improves the security of messages in the network
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