Analysis and Modification of Internet Key Exchange Protocol Based on Pre-shared Key Authentication

The paper elaborates on IKE protocol with pre-shared Key authentication in main mode and puts forward corresponding advises to the potential secure flaws and the disadvantage of not supporting road warrior users.The proposed scheme can detect the attack quickly by authenticating the messages at once and prevent the identity of senders and receivers from being got by others,with no limitation to fixed IP address.It is secure,efficient and feasible.