International Journal of Advanced Innovative Technology in Engineering (IJAITE)

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A Robust Authentication Scheme With Captcha Using Enhanced Security Primitive

GUNJAN MALVIYA, PALLAVI ITANKAR

Abstract :

All the applications on web implement varied authentication schemes to secure data from unauthorized access. Without proper authentication scheme the data is subjected to be attacked. Passwords are most widely used form of authentication scheme. Lot of researches has been done to make this scheme better and more secure. Still there is lot of scope as this form of authentication schemes has several vulnerabilities such as eavesdropping, replay attack etc. One more type of attack which is been a trouble for service providers is Denial of Service (DoS) attack sometimes called as botnet attack. This is an attempt to make a machine or network resource unavailable to its intended users by flooding it with useless requests/traffic. CAPTCHA is a possible solution for such DoS attack. But programs are designed to bypass the CAPTCHA security. In this work we make an attempt to present a robust authentication scheme using modified process of CAPTCHA to enhance authentication security at input level. The proposed scheme is supposed to be security measure for number of attacks such as eavesdropping, replay attack, and botnet attack.

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