Title :
Design and Improvement of Chinese CAPTCHA Based on Mathematical Expression
Author_Institution :
Dept. of Comput., Wuhan Polytech., Wuhan, China
Abstract :
Uses CAPTCHA in web page can to a certain extent, to resist the attacks from network. But many sites using the CAPTCHA is based on the English or the digital characters, and only adopts a simple deformation treatment, safety not guaranteed. The Chinese CAPTCHA in upper case characters, and adding noise, deformation processing, the machine automatically recognizes the very difficult. The experiment show: the Chinese CAPTCHA based mathematical expression has higher security.
Keywords :
Internet; natural language processing; security of data; Chinese CAPTCHA based mathematical expression; Web page; deformation processing; simple deformation treatment; upper case characters; Character recognition; Computer languages; Computers; Humans; Noise; Security; Software; Chinese CAPTCHA based mathematical expression; automatic attack; mathematical expression;
Conference_Titel :
Computer Science & Service System (CSSS), 2012 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4673-0721-5
DOI :
10.1109/CSSS.2012.159
