Secure User Authentication with Graphical Passwords and PassText

Most of the users access the Internet or web services by means of smart phones, which are capable of handling all kinds of computations. There is a necessity to provide mutual authentication among the clients (Mobile Hosts) and servers. In general, users authenticated to system or website by means of User ID and Password, a claim for user's identity. Passwords have their own vulnerabilities such as dictionary, brute-force, guessing, observation and spyware attacks etc. Users are the weakest link in any secure system because, they choose simple, short and easy to remember passwords. we proposes a strong password generation algorithm with help of PassText and Graphical Password concepts. PassText Password concept is used to generate a unique strong password with help of password images (graphical password). User need to remember only the password images instead of text. This paper analyzes the security issues with help of scyther tool.