A Technique Based on the Module-K Super Graceful Labelling for Designing New-Type Graphical Passwords

Abstract

NA149 computer as well as information security is the most significant challenge. Graphical passwords are already examined as the reliable authentication scheme over the textual passwords. Also psychological study says that human can easily remember images than text. So according to this fact, graphical passwords are easy to remember and difficult to guess. But because of graphic nature, nearly all the graphical password techniques are vulnerable to shoulder surfing attack. So here, a new graphical password authentication technique is based on the idea of “topological structure plus number theory” and various labellings for solving network transfer delay by using other type of graphical passwords. We define a new graph labelling, called Module-K super graceful labelling, and find some network models that admit our new labelling, and furthermore our methods can be transformed into effective algorithms. We try to find some connections between new graphical passwords defined on a topological structure, and show some them can form algebraic groups in this article. By the way, we find new graph labellings in which some mathematical conjectures are produced. These passwords promise the better robustness and memorability. Various available applications use the image and graphical passwords based authentication systems.