A Public-Key Traitor Tracing Scheme with an Optimal Transmission Rate

Abstract

The way of transmitting the encrypted digital content, to the legitimate subscribers over a broadcast channel has wide commercial applications; such as Pay-TV, DVD, etc In order to discourage the legitimate subscribers from giving away their decryption keys, the traitor tracing scheme collies up In this paper, we propose a public-key traitor tracing scheme that has optimal transmission rate In other words, our scheme enables everyone to transmit the encrypted digital contents almost, without, any redundancy As for tracing, our scheme supports black-box tracing, i.e., identifying colluders without opening the pirate decode Moreover, in our scheme, the storage requirement, for legitimate subscribers and digital content broadcasters is smaller than that of previous schemes