An Adaptive Mechanism for Securing Real-time Speech Transmission over the Internet.
Alessandro Aldini, Roberto Gorrieri, Marco Roccetti · 2000
We propose an adaptive packet audio control mechanism, originally designed for controlling and adapting the audio applications to the network conditions, and now equipped with cryptographic features in order to support secure, unicast, voice-based communications over the Internet. We take advantage of the characteristics of the adaptive mechanism in order to realize a lightweight security infrastructure which offers a good trade-off between Quality of Service (QoS) and security assurances. From the performance viewpoint, we claim the algorithm meets the real time constraints needed by audio transmission applications. From the security viewpoint, the algorithm aims at guaranteeing the authenticity of the trusted parties, and the confidentiality and integrity of the data during the conversation lifetime, being careful not to degrade the QoS. In order to support this claim, we compare the performance of the proposed mechanism with other well-known tools designed for the secure audio transmission over the Internet.