An approach for secure time synchronization in wireless sensor network

Wireless sensor networks (WSN) have received a lot of attention recently due to their wide applications such as target tracking, environment monitoring, and scientific exploration in dangerous environments. Secure time synchronization is a key service for wireless sensor networks (WSN). Time synchronization protocol synchronizes local clocks of group nodes to a common clock. In group, some of the sensor nodes may be malicious, which may disrupt the normal operation of a sensor network. In this paper a novel secure pair-wise and group-wise approaches for synchronizing the nodes in non-malicious environment are proposed.