Enhancing security against hard AI problems in user authentication using CAPTCHA as graphical passwords

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Captcha as Graphical Passwords—a New Security Primitive Based on Hard AI Problems

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We introduce captcha, an automated test that humans can pass, but current computer programs can’t pass: any program that has high success over a captcha can be used to solve an unsolved Artificial Intelligence (AI) problem. We provide several novel constructions of captchas. Since captchas have many applications in practical security, our approach introduces a new class of hard problems that ca...

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ژورنال

عنوان ژورنال: International Journal of Advanced Computer Research

سال: 2016

ISSN: 2249-7277,2277-7970

DOI: 10.19101/ijacr.2016.624001