Date Added: Dec 2012
The security issues are always raised for remote authentication service. Smart card based authentication protocol is best suited for authenticate legitimate user. Developing secure authentication protocol is a strong challenge. There are many potential attacks that are targeted at authentication such as insider attack, offline password guessing attack, masquerade attack, server spoofing attack, and parallel session attack. Recently many previous proposed schemes are fail to resist these attacks. In this paper, the authors introduce a remote authentication protocol that provides secure mutual authentication process and session key agreement. Their proposed protocol is providing better security to resist all possible attacks. In this protocol, they use low computing cost hash function and random nonce. They use random nonce to avoid complexity of time synchronization.