基于CAPTCHA技术的挑战信息使用时机模型

Using Verification Code with Opportunity Model Based on CAPTCHA

为了合理使用挑战信息并达到抑制蠕虫病毒传播的目的,采用数学建模方法建立一个基于CAPTCHA技术的挑战信息使用时机数学模型.针对CAPTCHA技术增加了用户负担和网络负载的不足,提出了改进策略,要找到一个合适的时间发送挑战信息,从而定性的分析了使用挑战信息的最佳时机.

Rational use of verification code for the purpose of inhibiting the spread of the virus worm,the use of mathematical modeling methods to build a verification code uses opportunity mathematic model based CAPTCHA.Improvement strategy is proposed to make up an increase of the burden of customers and the network load for CAPTCHA.Thereby it is a qualitative analysis of the best time to use verification code.