A NEW AUTHENTICATION SCHEME FOR SECURITY USING CAPTCHA PASSWORD
Journal Title: International Journal of Engineering Sciences & Research Technology - Year 0, Vol 4, Issue 8
Abstract
Many security primitives are based on hard mathematical problems. Using hard AI problems for security is emerging as an exciting new paradigm, but has been under-explored. In this paper, we present a new security primitive based on hard AI problems, namely, a novel family of graphical password systems built on top of Captcha technology, which we call Captcha as graphical passwords (CaGP). CaGP is both a Captcha and a graphical password scheme. CaGP addresses a number of security problems altogether, such as online guessing attacks, relay attacks, and, if combined with dual-view technologies, shoulder-surfing attacks. Notably, a CaGP password can be found only probabilistically by automatic online guessing attacks even if the password is in the search set. CaGP also offers a novel approach to address the well-known image hotspot problem in popular graphical password systems, such as PassPoints, that often leads to weak password choices. CaGP is not a panacea, but it offers reasonable security and usability and appears to fit well with some practical applications for improving online security.
Authors and Affiliations
P. Thrivikram
Keywords
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