一种基于常识的图片验证码设计方法

为了防止非法用户对在线系统的恶意攻击,提出了一种简单高效基于常识的图片验证码设计方法。通过不同难度层次的常识构建常识库,设计生成的图片验证码质量较高,用户根据图片验证码的常识问题推理得到答案,将答案作为密匙进行认证,而不是直接输入图片验证码上面的字符,可以有效杜绝非法用户对系统的攻击,弥补当前诸多验证方法的不足,同时又兼顾了验证码设计的可用性和安全性准则,适用于普通在线系统的身份认证。

An Image Verification Code Design Method Based on Common Knowledge

In order to prevent the malicious attack of illegal users on the online system, a simple and efficient design method of image verification code based on common sense is proposed. The common sense library is built by common sense of different difficulty levels, and the quality of the picture verification code generated by the design is high. The user infers the answer according to the common sense problem of the picture verification code, and authenticates the answer as a key instead of directly inputting the character above the picture verification code. It can effectively prevent illegal users from attacking the system and make up for the shortcomings of many current authentication methods. At the same time, it also takes into account the usability and security criteria of authentication code design. It is suitable for the authentication of ordinary online systems.