Abstract: Abstract:With the rapid development of information technology,people enjoy the convenience brought by information technology.However network users also confront network security threats such as theft,cyber attacks.Currently,the unique features of quantum can ensure the absolute safety of quantum communication, so researchers opened up new ideas to ensure information security in the field of quantum communication,especially in quantum key distribution field,which has been widespread concerned.Based on the properties of entangled Bell states,this paper proposes a quantum key distribution protocol with two-way identity authentication.Compared to conventional quantum key distribution protocol,this protocol has the characteristic of Zero-knowledge,and two-way identity authentication,as well as only once quantum sequence transmission which are capable of finishing identity authentication and key distribution simultaneously.It shows that the quantum key distribution protocol raised in this paper can resist a series of attacks like intercept retransmission attacks,middle attack and so on through the analysis of this paper.

Key words: key distribution