A more efficient secure event signature protocol for massively multiplayer online games based on P2P

In recent years, Massively multiplayer online games (MMOGs) have been increasingly popular. Considering the limits of the traditional architectures, MMOGs based on the peer-to-peer networks have many advantages: scalability, computation cost, reliability and concurrency. Researchers have made improvements on this protocol to enhance its security since Chan et al. proposed an efficient and secure event signature (EASES) protocol, however, no one has solved this problem in essence. In 2013, Yuan et al. presented a higher secure scheme, unfortunately, its efficiency is lower than others due to bilinear pairing. In this paper, we propose a more efficient and secure protocol, the security of which is just guaranteed by the Diffie-Hellman problem. Meanwhile, it is concluded that the efficiency of ours also behaves better after the comparison with other existing protocols.