1]Lee S W,Kim H S,Yoo K Y.Efticient Verifier Based Key Agreement Protocol for Three Parties Without Server' s Public Key[J].Applied Mathematics and Computation,2005,167 (1):996-1003.
2Yang Xiumei,Zhou Fucai,Liu Guangwei,Chang Guiran. A New Key Exchange Protocol for Threer parties[J].Joumal o f Northeastern University( Natural Science),2009,30(7):976-97 9.