Quantum Authentication and Quantum Key Distribution Protocol

Hwayean Lee, Jongin Lim, HyungJin Yang

Published 2005-10-18, updated 2006-01-11Version 2

We propose a quantum key distribution protocol with quantum based user authentication. Our protocol is the first one in which users can authenticate each other without previously shared secret and then securely distribute a key where the key may not be exposed to even a trusted third party. The security of our protocol is guaranteed by the properties of the entanglement.