Generation of Random Order using Mouse Clicked in Text Based Color CAPTCHA

Abstract

CAPTCHA is used as a standard security mechanism to prevent the bots to enter into the commercial websites like e-governance, inventory, educational sector and so on. Now a days hackers wrote malicious program and enter into the website to destroy their resources. To prevent such kind of activities, in this paper introduces a Random Ordered Mouse Clicked Curve based CAPTCHA (ROMCCC) is completely differing from the existing web CAPTCHA. It combines the features of text based and image based CAPTCHA. In order to improve the representation of a CAPTCHA character by involving two major fields such as user friendly and secure, the methodology proposed in this paper introduces a Curve (upper/lower) Based Text (CBT) CAPTCHA. A group of CAPTCHA characters (i.e 6 to 8) is to be arranged and look like a parabola shape. In the CAPTCHA screening test, a set of CAPTCHA character along with an available usage character represented. In this proposed methodology, a random number is to be displayed under each CAPTCHA character. Based on the sorted order of the random number, userclick the usage character one by one and these characters are displayed in the text box. After clicking all the usage characters, then only the user can sign and enter into the corresponding websites. This type of CAPTCHA can be applied in the major available web area. The number of usable CAPTCHA characters is to differ for each attempt and also each CAPTCHA character is represented in different colors. This makes the same character can have the chance to represent in different colors which in turn the pixel intensity can vary. Meanwhile of displaying usage characters are represented in different order for each attempt along with the CAPTCHA character set. Consequently this type of process can be broken by any robot and web security can be strengthened in the areas such as inventory, defense and banking sectors.