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Graphical passwords have been proposed as an alternative to textual passwords, due to its complexity that users are having in remembering their password combination. Graphical password was introduced by Blonder in 1996, which was easier to remember because of its graphical content. Therefore usability and memo ability are improved. In this paper, we propose and develop a new graphical password called...
Effective user authentication is critical for protecting information and system safety. The most common computer authentication method is text password. Previous research suggests that text password can be hard to remember and users tend to create simple text password that is unsecure. Various password strategies and alternative authentication applications have been proposed, such as mnemonic password,...
Text-based password schemes have inherent security and usability problems, leading to the development of graphical password schemes. However, most of these alternate schemes are vulnerable to spyware attacks. We propose a new scheme, using CAPTCHA (Completely Automated Public Turing tests to tell Computers and Humans Apart) that retaining the advantages of graphical password schemes, while simultaneously...
In these days, password security is one of major part of security problems. With reference to the memory ability of human's memory and the previous solution proposed over the text password, we can find graphical password as one of the best solution in this way. On the other hand, parallel by graphical password, query direct password (QDP) is one of the major studies in password security. As, Kerberos...
Nowadays, user authentication is one of the important topics in information security. Strong text-based password schemes could provide with certain degree of security. However, the fact that strong passwords are difficult to memorize often leads their owners to write them down on papers or even save them in a computer file. Graphical authentication has been proposed as a possible alternative solution...
Access to computer networks and systems is most often based on the use of conventional passwords nowadays. However, users have difficulty remembering a password that is long and random-appearing. So, they create short, simple, and insecure passwords. Graphical passwords have been designed to try to make passwords more memorable and easier for people to use, to create and, therefore, more usable and...
Graphical passwords are an alternative authentication method to alphanumeric passwords in which users click on images to authenticate themselves rather than type alphanumeric strings. This research aims to study the usability features of the recognition base graphical password methods available and extract the usability features of the existing methods. In this paper we study the recognition base...
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