Secure, Robust and Adaptive Echo-Based Information Hiding in Voice Communications for Equipment Maintenance in Marine Ships

The maintenance of equipments in marine ships is a critical issue, in which the security of robustness of the communications between the marine ships and the base present foremost importance. As the communication link confronts bandwidth and delay constraints, it is challengeable to design an appropriate scheme. In this paper, we propose an echo-based information hiding scheme for addressing this problem. The confidentiality and integrity of the maintenance communications can be guaranteed. The robustness of the communication indicates the resilience to artificial tampering. The interaction for maintenance guidance can provide associated text or images via voice communications. Our echo-based method utilizes the sound echo delay to hide the information in the voices. The simulation verified that the scheme is secure and robust.