一种面向低轨卫星网络的高效无证书身份认证方案.

Aiming at the problems of long time delay and high computation cost of using complex bilinear mapping in the current LEO satellite network authentication scheme, this paper proposed an efficient certificateless authentication scheme based on the Gayathri’s certificateless authentication scheme. This scheme unifies the user’s public key and real identity, so that need not the third party to participate in the authentication process and reduce the authentication delay; uses a small number of point multiplication and point addition operations on the elliptic curve to construct the authentication message, which does not involve the bilinear mapping and reduces the computation cost. Then this paper proves the authentication scheme’s security based on the assumption of elliptic curve discrete mathematics under the random oracle model. Finally, through experimental simulation, comparing with the existing LEO satellite identity authentication schemes, the proposed scheme has lower authentication delay, computational overhead and communication overhead. [ABSTRACT FROM AUTHOR]