Group-based Public Key Traitor Tracing Scheme
Liu Yun-ke · Jisuanji gongcheng · 2011
To protect the legal interests of copyright owners efficiently,this paper presents a group-based public key pirate tracing scheme.Legal users are divided into groups.By applying group-oriented technique,they can construct more decryption keys.The tracing algorithm is faster as it can first narrow down the traitor to specific group.By combining the discrete log representation problem and large integer factoring problem,this scheme is full collusion resistant,and it has the advantage of black-box tracing.