APPARATUS FOR QUANTUM KEY DISTRIBUTION ON A QUANTUM NETWORK AND METHOD USING THE SAME

摘要

A quantum key distribution apparatus and method on a quantum network is disclosed. The quantum key distribution apparatus according to an embodiment of the present invention includes an authentication key sharing unit that shares authentication keys with quantum key client devices; A quantum key generator for generating keys filtered by the quantum key client devices using a quantum state; An error correction unit for correcting errors of the filtered keys to generate output bit streams and an output bit stream received from the authentication keys, the distributed output bit streams and the quantum key client devices to calculate an encrypted bit stream And a bit string operation unit. The present invention improves security by restricting the distribution device from knowing the key shared among users.