Unequal authenticity protection of video multicasting

Multicast video authentication is important to verify the authenticity of video data transmitted over the network. In this paper, we focus on unequal authenticity protection for video multicasting. A two-stage authentication strategy, which is composed of hash-based authentication and FEC-based correction, is proposed to resist the pollution attack. Different from the traditional methods, the FEC parameters instead of the rate are derived via a RD optimization procedure. In addition, we also analyze the issues of security strength, authentication rate, and hash length for the proposed method. The analyses show that our method with unequal hash length indeed achieves better RD performance. Simulation results further demonstrate the effectiveness of the proposed method.