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

  title={Captcha as Graphical Passwords—A New Security Primitive Based on Hard AI Problems},
  author={Bin B. Zhu and Jeff Yan and Guanbo Bao and Maowei Yang and Ning Xu},
  journal={IEEE Transactions on Information Forensics and Security},
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 (CaRP). CaRP is both a Captcha and a graphical password scheme. CaRP addresses a number of security problems… CONTINUE READING
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