Linking Protection Design for ALE System

This paper mainly introduced Linking Protection(LP) scheme and the encryption algorithm adopted in it,which aims at resolving the vulnerability of the automatic link establishment(ALE) system's security The algorithm's realiability is proved by lots ofteses; And the performance of LP scheme is analyed by simulating. The results of the simulation prove that the scheme enchances the system's security, however duing to the word synchronization, it affects the performance a little.