Cryptography Using CAPTCHA Puzzles.

Abishek Kumarasubramanian Rafail Ostrovsky Omkant Pandey Akshay Wadia

Published in: IACR Cryptol. ePrint Arch. (2012)

Keyphrases

cellular automata
crossword puzzles
information security
constraint satisfaction
jigsaw puzzle
data sets
databases
management system
markov random field