Secure Protocol for Incoming Sensor Node in the Dynamic Sensor Networks

The establishment of shared cryptography keys is one of the challenging problems in the sensor networks. Key Infection is a promising model to solve this problem on the commodity sensor networks without complex mechanism. This model, however, does not consider the mobility of sensors, so if sensor nodes move out of initial communication range, they cannot rejoin the network since they require new pair-wise key. Therefore, key infection model has been restricted in the static sensor network To be applied on the dynamic sensor networks, therefore, key infection model has to be extended to handle incoming sensor node. In this paper, we propose secure protocol for incoming sensor node in the dynamic sensor networks and verify the proposed protocol formally. Furthermore, we use simulation to investigate the effect of our proposed protocol.