Security of Park-Lim key agreement schemes for VSAT satellite communications

Park and Lim [1998] proposed a modified Yacobi scheme, a modified Diffie-Hellman scheme in two cases, and a modified Diffie-Hellman scheme with ID for key agreement in very small aperture terminal satellite communications. In this paper, we show that the three Park-Lim schemes are insecure against an impersonation attack.