ADAMAS: Interweaving unicode and color to enhance CAPTCHA security
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- 作者：Narges Roshanbin ; roshanbi@ualberta.ca" class="auth_mail" title="E-mail the corresponding authorAuthor Vitae ; James Miller jm@ece.ualberta.ca" class="auth_mail" title="E-mail the corresponding authorAuthor Vitae
- 关键词：CAPTCHA ; UNICODE ; Color ; Interactive CAPTCHAs ; CAPTCHA security ; CAPTCHA usability
- 刊名：Future Generation Computer Systems
- 出版年：2016
- 出版时间：February 2016
- 年：2016
- 卷：55
- 期：Complete
- 页码：289-310
- 全文大小：2837 K
文摘
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A new interactive CAPTCHA is proposed that offers resistance against various forms of attacks.
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The large Unicode character set is used as the input space of this CAPTCHA.
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The use of homoglyphs makes segmentation and recognition more difficult for attackers.
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A large amount of randomness is incorporated in this CAPTCHA in order to minimize patterns and prevent attacks.
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Use of color in the foreground and background of this CAPTCHA aims to balance security and usability.