Adaptive security scheme for real-time VoIP using multi-layer steganography

Abstract

Nowadays Voice over Internet Protocol (VoIP) is one of the most widely used technologies to transmit the voice. With the widely spreading in such technology many counters attaches tried to apply different counter measure. In this paper we tried to build a counter countermeasure which increases the security of specific messages by performing a complicated three security stages. These stages are; embedding the selected voice into RGB image, hidden the image in voice signal and perform data integrity using real time protocol (RTP). Following such a proposed algorithm, the process of eavesdrop or counter attacks will not be able to break such a multi-layer security process. In this paper, we propose an Adaptive VoIP steganography approach to hide the audio information within images to enhance the security of the voice communications. The proposed system is completely implemented and developed using C++ in OPNET Modeler. Simulation results showed that the proposed system is robust enough to overcome many attacks such as denial of service, man-in-the-middle and eavesdrop without affecting network performance or quality of service.