L13-PALLADIUM

6.857 Computer and Network Security October 22, 2002 Lecture Notes 13 : Palladium, Zero Knowledge Lecturer: Ron Rivest Scribe: Baratz/Gavacs/Sen/Sudan [These are the initial scribe notes. The final version will appear with updated figures. Namely, the figures will have larger fonts.] 1 Outline - Palladium discussion - Zero Knowledge Proofs 2 Palladium discussion Prof. Rivest: What did people like / dislike about Palladium? Student: I think it’s interesting to think about the various other organizations that are affecting Palladium, like Hollywood, etc. Student: I don’t think Palladium is going to fly. They haven’t really come up with a killer-app and the cost is going to be too high. What is the killer app? Movie and music distribution? Prof. Rivest: Could movie distribution be the killer app? That really seems to be their driving motivation. Student: It seems as though the only way they can justify this initiative is if they envision PCs becoming the center of a home theater system. Using PCs to control DVD players, TVs, etc. Prof. Rivest: A very useful way of thinking about it is as a virtual embedded set top box. Student: How can they use this system for DRM if it isn’t physically tamper-resistant? Maybe due to the DMCA it would be illegal to install dual-ported memory. Hardware attacks could probably be carried out for hundreds of dollars or less. A movie could be extracted and then distributed. Prof. Rivest: Besides DRM, what could this be used for? Student: Possibly ...