Security is demanded in many ranges of applications. Mostly for authentication purpose user tend to use textual passwords. But they are vulnerable to dictionary attacks, shoulder surfing, eaves dropping, and social engineering. As an alternative to textual passwords, graphical passwords can be used. But even graphical passwords are vulnerable to shoulder surfing. So as to cope up with this problem we can combine text with images to generate session passwords. By using this the session passwords will be generated only once. In our project two techniques are used to generate session passwords using text and colors. When the session passwords is entered the innovative algorithm namely Magic Rectangle Generation algorithm (MRGA) is applied. The singly even Magic Rectangle is formed based on seed number, start number, row sum and column sum. The value of row sum an column sum is very difficult to trace. Hence it is helpful to enhance the security due to its complexity in encryption process.
Keywords : Textual and Graphical Password, attacks, security, authentication,Magic Rectangle Generation Algorithm,, encryption.