摘要
在实际应用中,验证码的安全性与易用性是人们关注的重要方面。针对当前很多站点的验证码都缺乏可靠的安全性,设计了一种基于字符特征的随机问题阅读式验证码,它能有效抵御光学字符识别技术对阅读式验证码的破解。
How to make a secure and apt CAPTCHA is the essential of the CAPTCHA in the practice. But the most of CAPTCHAR are lack of security, A brief introduction of the current CAPTCHA is given and a new method about randomized question reading CAPTCHA based on character feature is designed, which can prevents from breaking by the technology of optical character recognition.
出处
《计算机工程与设计》
CSCD
北大核心
2008年第7期1619-1621,1690,共4页
Computer Engineering and Design
关键词
自动攻击
验证码
阅读式验证码
字符特征
随机问题
attack automatically
CAPTCHA
reading CAPTCHA
character feature
randomized question
