International Association for Cryptologic Research

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CAPTCHA: Using Hard AI Problems for Security

Authors:
Luis von Ahn
Manuel Blum
Nicholas J. Hopper
John Langford
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DOI: 10.1007/3-540-39200-9_18 (login may be required)
URL: https://iacr.org/archive/eurocrypt2003/26560294/26560294.pdf
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Conference: EUROCRYPT 2003
BibTeX
@inproceedings{eurocrypt-2003-2005,
  title={CAPTCHA: Using Hard AI Problems for Security},
  booktitle={Advances in Cryptology - EUROCRYPT 2003, International Conference on the Theory and Applications of Cryptographic Techniques, Warsaw, Poland, May 4-8, 2003, Proceedings},
  series={Lecture Notes in Computer Science},
  publisher={Springer},
  volume={2656},
  pages={294-311},
  url={https://iacr.org/archive/eurocrypt2003/26560294/26560294.pdf},
  doi={10.1007/3-540-39200-9_18},
  author={Luis von Ahn and Manuel Blum and Nicholas J. Hopper and John Langford},
  year=2003
}