High-efficiency and provably secure key agreement of double rounds in both sides

Under the circumstance of completely open up of network,in order to guarantee the security of the communication,construct secure and efficient key agreement protocol.A new two rounds two-party authenticated key agreement protocol is proposed.According to the key agreement,two models in the new key agreement protocol by both sides is analyzed with key agreement to make a session key,and then new forms of double rounds key negotiation meeting is proved formally,in addition,a triple rounds confirmed key negotiation meeting is,the good effect is obtained through the experiment performance analysis.