3D-wavelet based Secure and Scalable Media Streaming in a Centralcontrolled P2P Framework

To meet with the ever-increasing needs of large-scale multimedia applications, a streaming media system has to be both secure and scalable. Conventional P2P technology used in streaming media could solve the problem of scalability and bandwidth bottleneck of traditional CIS architecture but still have problems in handling security for losing central manageability and robustness. Therefore, to handle security and scalability issues as a whole, in this paper we present a novel secure and scalable streaming media scheme in a central-controlled P2P framework. By firstly adopting 3D-wavelet coding in P2P streaming, we encode the raw data into different layers and separate security management from data transmission by transmitting the layer with most priority in CIS network to guarantee quality and conduct security management while transmitting the lower priority content layers in the pure P2P network to promote scalability .In our implementation, we specify the 3D-wavelet coding for P2P streaming, and design our handshaking and streaming process, load-balancing gossip-based management protocol for P2P peers. Our experimental results demonstrate our scalable framework exceed CIS streaming and meanwhile achieve better security with accepted encoding/decoding overheads over pure P2P media streaming.