Persistent Protection in Multicast Content Delivery
نویسنده
چکیده
Persistent Protection in Multicast Content Delivery Malek Barhoush, Ph.D. Concordia University, 2012 Computer networks make it easy to distribute digital media at low cost. Digital rights management (DRM) systems are designed to limit the access that paying subscribers (and non-paying intruders) have to these digital media. However, current DRM systems are tied to unicast delivery mechanisms, which do not scale well to very large groups. In addition, the protection provided by DRM systems is in most cases not persistent, i.e., it does not prevent the legitimate subscriber from re-distributing the digital media after reception. We have collected the requirements for digital rights management from various sources, and presented them as a set of eleven requirements, associated with five categories. Several examples of commercial DRM systems are briefly explained and the requirements that they meet are presented in tabular format. None of the example systems meet all the requirements that we have listed. The security threats that are faced by DRM systems are briefly discussed. We have discussed approaches for adapting DRM systems to multicast data transmission. We have explored and evaluated the security protocols of a unicast distribution model, published by Grimen, et al. that provides “persistent protection”. We have found two security attacks and have provided the solution to overcome the discovered attacks. Then we have proposed a more scalable architecture based on the modified model. We call the resulting architecture persistent protection in multicast content iii delivery. We present and formally validate the protocol for control and data exchange among the interacting parties of our proposal.
منابع مشابه
A New Method based on Intelligent Water Drops for Multicast Routing in Wireless Mesh Networks
In recent years a new type of wireless networks named wireless mesh networks has drawn the attention of researchers. In order to increase the capacity of mesh network, nodes are equipped with multiple radios tuned on multiple channels emerging multi radio multi channel wireless mesh networks. Therefore, the main challenge of these networks is how to properly assign the channels to the radios. O...
متن کاملA Massively Scalable Persistent Content Distribution System
This paper proposes a novel form of peercasting system as an improved solution for IP-based mass media content delivery. Several approaches are discussed, some of which are already widely deployed, or undergoing such deployment, as homogeneous systems. In particular, IP multicast and Peer-to-Peer (P2P) overlay network techniques are described in isolation as they form the bedrock of the new pee...
متن کاملA massively scalable persistent content distribution system
This paper proposes a novel form of peercasting system as an improved solution for IP-based mass media content delivery. Proposal aims to improve existing homogenous and heterogeneous systems for mass media distribution to very large user bases, with needs for timely and reliable delivery, and content persistence. Thus IP multicast has great advantages for delivery with controlled last-mile ele...
متن کاملA Survey on Multicast Routing Approaches in Wireless Mesh Networks
Wireless mesh networks (WMNs) which mediates the broadband Internet access, have been recently received many attentions by the researchers. In order to increase capacity in these networks, nodes are equipped with multiple radios tuned on multiple channels emerging multi radio multi-channel WMNs (MRMC WMNs). Therefore, a vital challenge that poses in MRMC WMNs is how to properly assign channels ...
متن کاملLive Streaming via Application-Level Multicast in Content Delivery Networks
With the increasing popularity of multimedia streaming applications over the Internet, innovative infrastructures and technologies are needed to efficiently distribute the surging amount of multimedia contents. Content delivery networks provide an intermediate layer of infrastructure that helps to deliver the contents from content providers to a large community of geographically distributed use...
متن کامل