An Improved Quantum Identity Authentication Protocol for Multi-party Secure Communication.

Quantum secure identity authentication is a gripping part in the field of quantum communication which has an obvious superiority to makes the identity authentication system more secure. There are many existing multi-party quantum authentication protocols whereas not impeccable, some potential insecurity for some multi-party communication in those protocols can lead to be eavesdropped. Therefore, this paper aims to proposed an improved multi-party quantum identity authentication for secure communication scheme, by coalescing two advancing methods from Hong et al. [23] and Xiong et al. [24] and introduces a simple protocol that incorporates quantum identity authentication technique into multi-party communication medley with Greenberger-Horne-Zeilinger states as well as photons in Bell entangled states can be safely measured by legitimate parties. This protocol literally not only smooth over the insecure problems but also easy to realize. With this improved protocol, the authentication method can defend many attacks in the real world. In addition, effective protection against various attacks like eavesdropping or entangled-and-measure attack can also be achieved via this improved protocol.