Multi-party Quantum Key Distribution Protocol Without Information Leakage

Quantum secure communication is the key development object of current communication technology. There are many branches, among which the most important branch is quantum key distribution. Information leakage is the most likely problem in the process of quantum key distribution. Therefore, based on the entangled properties of Bell state particles, this paper proposes a multi-party quantum key distribution protocol without information leakage. The protocol not only authenticates the identity of the users. It also ensures that, there is authentication between the third party and the users. This is to enable any of the complete the distribution with the help of the third party. Our proposed protocol makes use of entanglement characteristics of particles. The security analysis of the protocol has confirmed it as effective to withstand information leakage. Also, the protocol can relatively resists common attacks, making it theoretically safe.