MDS: Multiplexed Digital Signature for real-time streaming over multi-sessions

Abstract

We propose an efficient scheme called MDS (Multiplexed Digital Signature) to digitally sign on real-time stream of which application especially requires multiple sessions. A typical scenario is that a source multicast multimedia contents over the Internet using several RTP/RTCP sessions. With a system using a previously proposed stream authentication scheme directly, both the computation and the transmission overhead are linearly increased in proportional to the number of sessions to be opened. This is mainly because existing schemes have only taken a single session into account. MDS is well suited for supporting data origin authentication efficiently in such a scenario. © Springer-Verlag Berlin Heidelberg 2005.