A Cooperative Jamming Scheme Based on Node Authentication for Underwater Acoustic Sensor Networks

Cooperative jamming (CJ) is one of the important methods to solve security problems of underwater acoustic sensor networks (UASNs). In this paper, we propose a Cooperative Jamming Scheme based on Node Authentication for UASNs to improve the effect of CJ by selecting suitable jamming source for found illegal nodes. In the node authentication, all nodes will be identified by their trust value (TV). TV is calculated according to three types of evidence: channel-based trust evidence, behavior-based trust evidence and energy-based trust evidence. Besides, to deal with cases where legal nodes may be suspected, the historical TV and trust redemption will be considered when calculating TV. In cooperative jamming, according to the link quality, several nodes are selected to jam illegal nodes. Both simulation and field experiment show that the proposed scheme can accurately find the illegal nodes in the time-vary channel and improve the security of the network.