Adaptive traitor tracing for large anonymous attack
Hongxia Jin, Jeffery Lotspiech, Michael Nelson, Nimrod Megiddo · 2008
In this paper we focus on traitor tracing technologies for the anonymous re-broadcasting attack where the attackers re-distribute the per-content encrypting key or the decrypted plain content. To defend against an anonymous attack, content is usually built with different variations. For example, content is divided into multiple segments, each segment comes with multiple variations, and each variation is differently encrypted. Each user/player can only play back one variation per segment through the content.