Speaker: Serdar Pehlivanoglou
Day:  Wednesday, 1/31/2006
Room: ITEB 336
Time: 2:00pm

Title: Broadcast encryption

Cryptography has proven to be capable of providing copyright protection assurance for digital
content distribution. In some applications such as subscriber based receiver systems, it is
possible to prevent copyright violations by embedding loyalty increasing and key
redistribution prevention mechanisms. Broadcast encryption protocols are schemes where only
authorized users are allowed to get access to content and apply to digital distribution
channels (e.g. subscription services) or content protection (the best example is DVD
players). Traitor tracing protocol is a way of preventing key redistribution.
In this paper, we will present Subset-Cover framework with an integration of tracing
mechanism, which abstracts a variety of revocation schemes. Subset-Cover framework is
introduced in [NNL01] with a slight relaxation on its tracing requirements. The disadvantage
of such a weaker requirement is also going to be discussed in following sections.