Quatum authentication using entangled states
A quantum authentication scheme is presented in this paper. Two parties share Einstein-Podolsky-Rosen (EPR) pairs previously as the identification token. They create auxiliary EPR pairs to interact with the identification token. Then the authentications accomplished by a complete Bell state measurement. This scheme is proved to be secure. If no errors and eavesdroppers exist in the transmission, the identification token is unchanged after the authentication. So it can be reused.
authentication identification token epr pair security the bell state measurement reusable