Key Managements of Underwater Acoustic Communication Environments

In the underwater environment, it is difficult to use the RF signal used on the ground due to the characteristics of the medium different from the terrestrial. Therefore, when communicating with each node, acoustic communication is performed instead. Since the acoustic communication environment is poor in various aspects such as transmission speed and bandwidth compared to RF communication, it is difficult to apply the existing security method used in RF communication as it is. In this paper, we propose a key management method between entities considering underwater environment.