| 验证码技术的攻防对策研究 |
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| 引用本文： | 王斌君,王靖亚,杜凯选,韩 宇.验证码技术的攻防对策研究[J].计算机应用研究,2013,30(9):2776-2779. |
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| 作者姓名： | 王斌君 王靖亚 杜凯选 韩 宇 |
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| 作者单位： | 中国人民公安大学 网络安全保卫学院,北京,100038 |
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| 基金项目： | 公安部应用创新项目（2011YYCXGADX126） |
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| 摘 要： | 针对验证码的本质特征、形式化定义、今后发展方向和研究重点等问题, 通过深入、细致地分析和研究现有大量验证码, 给出了验证码的本质特征描述及形式化定义, 并从信息类型分类（共五种）、识别方式分类（共两种）和交互性分类（共两种）三个维度给出了验证码的20个种类; 分析了20种验证码类型的技术特点, 研究了其攻防对策, 给出了各类验证码今后的研究重点、难点及其研究方向。重点探讨了动态验证码和隐性验证码（包括语义验证码）, 特别针对验证码通用攻击的攻防对策, 提出了验证码领域的一些新思路和新研究方法。
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| 关 键 词： | 身份鉴别 验证码 动态验证码 隐性验证码 验证码分类 验证码设计 |
Research on attach and strategy of CAPTCHA technology |
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| WANG Bin-jun,WANG Jing-y,DU Kai-xuan,HAN Yu.Research on attach and strategy of CAPTCHA technology[J].Application Research of Computers,2013,30(9):2776-2779. |
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| Authors: | WANG Bin-jun WANG Jing-y DU Kai-xuan HAN Yu |
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| Affiliation: | College of Cybersecurity Protection, Chinese People's Public Security University, Beijing 100038, China |
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| Abstract: | About the problem of essential characteristics, formal definition, new direction and research key of CAPTCHA, through a lots of analysis of the known CAPTCHA, this paper discussed the essential characterize and formal definition of CAPTCHA. It proposed the 20 varieties of CAPTCHA by three dimensions of information classification (5 varieties), recognized method classification (2 varieties), and interaction type classification (2 varieties), and gave technical characteristics analysis, attach and strategy research, keys and directions of the 20 varieties. Then it discussed the dynamic CAPTCHA and implicit CAPTCHA(including semantic CAPTCHA), specially proposed about the general CAPTCHA attach, some new idea and new method of CAPTCHA. |
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| Keywords: | authentication CAPTCHA dynamic CAPTCHA implicit CAPTCHA CAPTCHA classification CAPTCHA design |
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