一种手绘轨迹验证码的仿真实现

A Simulation Realization of Hand-Drawn Track CAPTCHA

验证码技术通常作为分布式信息处理的第一道安全屏障,图形文本验证码是一种最常用的验证码解决方案,但实验证明,传统图形文本验证码很容易被机器程序识别,因此,存在较大安全隐患。本文提出的“手绘轨迹引导的图形文本验证码解决方案”由于大大增加了空间复杂度,难以被机器程序识别。手绘轨迹是一种人工处理方式,由于其处理过程效率低下而无实际应用价值,因此,需要使用计算机程序来仿真实现。实验证明,仿真实现的“手绘轨迹引导的图形文本验证码”符合验证码设计目标,是一种有效的图形文本验证码解决方案。

CAPTCHA technology is usually used as the first security barrier for distributed information processing. Graphic text CAPTCHA is one of the most commonly used CAPTCHA solutions, but experiments have shown that traditional graphic text CAPTCHAs are easily recognized by machine programs;therefore, Traditional graphic text CAPTCHAs have major security risks.The“graphic text CAPTCHA solution guided by hand-drawn track”proposed in the paper is difficult to be recognized by machine programs due to greatly increased space complexity. The hand-drawn track is a manual processing method, which has no practical application value due to the low efficiency of the processing process;therefore, it is necessary to use a computer program to simulate it. Experiments have proved that the“graphic text CAPTCHA guided by hand-drawn track”realized by simulation meets the design goals of the CAPTCHA and is an effective graphic text CAPTCHA solution.