Remote access control mechanism using rabin public key cryptosystem

Abstract

There is no efficient algorithm for factoring a large composite number in polynomial time and the security of the Rabin cryptosystem is based on it. As large number of internet users access the web server everyday through insecure channel, therefore, user authentication along with privacy over the world is very important. In this paper, we first proposed Rabin cryptosystem based remote login authentication protocol without using smart card for accessing the web server securely. This paper not only proposed the authentication protocol, but it also applies well popular BAN logic to analyze the security of the proposed protocol. Additionally, we have presented informal security analysis. The proposed protocol not only contributes strong security, but it also achieves others advantages like mutual authentication property, efficient and user-friendly password change phase and an approach which helps to recover the forgot password securely.