A secure and robust dynamic ID-based mutual authentication scheme with smart card using elliptic curve cryptography

As networking and wireless communication technologies advance more rapidly, it give rise to a quick change in the m-commerce land scape. The insecure public internet as an access medium resulted in lots of cryptographic attacks on wireless transactions. Due to this, there is an extreme demand for light weight and secure authentication protocols. In this context, few researchers have proposed E.C.C based authentication schemes to validate the legitimacy of the user connecting to remote server. Recently Islam et al has proposed a dynamic ID based authentication scheme using E.C.C and claimed that their scheme is secure and flexible. In this manuscript, we will illustrate that their scheme is susceptible to offline password guessing attack and user impersonation attack. We then communicate a secure and robust authentication scheme, which is resistant to all cryptographic attacks and light weight. We have analyzed security strengths of our scheme formally using random oracle model and game theory.