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Persistent Protection in Multicast Content Delivery

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Persistent Protection in Multicast Content Delivery

Barhoush, Malek (2011) Persistent Protection in Multicast Content Delivery. PhD thesis, Concordia University.

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Abstract

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 delivery. We present and formally validate the protocol for control and data exchange among the interacting parties of our proposal.

Divisions:Concordia University > Faculty of Engineering and Computer Science > Computer Science and Software Engineering
Item Type:Thesis (PhD)
Authors:Barhoush, Malek
Institution:Concordia University
Degree Name:Ph. D.
Program:Computer Science
Date:23 November 2011
Thesis Supervisor(s):Atwood, Dr. J. William
ID Code:974025
Deposited By:MALEK BARHOUSH
Deposited On:20 Jun 2012 14:41
Last Modified:15 Nov 2012 16:43

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  • Persistent Protection in Multicast Content Delivery. (deposited 20 Jun 2012 14:41) [Currently Displayed]
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