Method for securing media independent handover message transportation

PURPOSE: A method for securing media independent handover message transportation is provided to protect MIH(Media Independent Handover) messages from an external attack by transmitting and receiving MIH messages through a secure channel. CONSTITUTION: A MMT(Multi-Mode Terminal,110) enables an authentication process of a second layer and an access router by an EAP(Extended Authentication Protocol). The access router transmits MAC(Medium Access Control) address of MSK(Master Session Key) and the terminal to an information server(120). The access router produces peer keys through MSK. The information server creates an information server key with the MSK. The peer key is used in security channel forming between the access router and the terminal. The information server key is used between the terminal and the information server for forming a secure channel.