Mutual authentication protocols for the virtual home environment in 3G mobile network

In the virtual home environment (VHE), which was proposed to offer global roaming and personal service environment portability, user´s profiles and service logic are conveyed from home network to visited network to provide services at the visited network. Because user´s profiles and service logics may contain confidential information, some procedures for mutual authentication among entities for offering confidence are needed. For these issues, we propose and analyze two 3-party mutual authentication protocols adaptable to the VHE in 3G; the password based mutual authentication protocol and the mutual authentication protocol with trusted third party.