ECMAM: Elliptic Curve Cryptosystem based Mutual Authentication Model on Satellite Control Communications

초록

When a satellite or a satellite control center receives a signal from each other party on satellite control communication, each party has to judge whether the signal comes from an authenticated party or not using some authentication operation. If each party cannot authenticate the signal exactly, a satellite and satellite control center can be damaged significantly or be controlled by unauthenticated party. And the requirements of the bandwidth efficiency on satellite communications should also be considered. This paper proposes ECMAM (Elliptic Curve Cryptosystem based Mutual Authentication Model), which is a mutual authentication model using Elliptic Curve Cryptosystem (ECC) for security on satellite control communication. ECMAM comprises two mutual authentication parts. The first part that is a 2-pass message exchange protocol authenticates each party using the signature scheme of ECC. The second part uses not only a session key generated in the first part but also a counter for the authentication. And both a time stamp and a counter, which is used in the first and second mutual authentication parts respectively, prevent the attack of replaying. ECMAM satisfies the fundamental requirements of security, which are entity authentication, key authentication, key agreement, key confirmation, key freshness, and non-repudiation of user. ECMAM also affords good bandwidth efficiency to satellite communication.