Game Optimization for Time-Critical Multicast Data Origin Authentication: Trade Off between Security and Efficiency

Security and efficiency of messages transmission are crucial requirements for multicast data origin authentication, especially in time-critical scenarios, such as pay-TV and the smart grid. However, how to balance such equirements is still a difficult issue. Through analysis, we find that TV-HORS is more suitable for the time-critical scenarios than RSA-based and MAC-based scheme. However, the reuse times of TV-HORS scheme is still too small to suit some scenarios. In this paper, we present a Game Model of Multicast Data Origin Authentication (GMMDOA), to describe the relationship between security and efficiency for the time-critical multicast communication, contra posing the TV-HORS scheme. By analyzing our model with Shannons information and game theory, we propose an optimization scheme for update the private key. Through the security analysis of our model, the signature valid time is negligible compared with the adversary attacking time. Thus, the security of our scheme is still secure even in the lowest risk-level parameter. We present measurement results from experiments and discuss performance comparisons. It shows that, our scheme does significantly to promote the efficiency of multicast data origin authentication.