摘要
网页验证码技术是目前各类网站防止机器人程序自动注册和登录等攻击的有效方法,阐述了验证码的作用及实现原理,并通过实例给出基于ASP环境下的几种常见验证码的具体实现方法。
Web verification code technology is an effective method against attack of auto-login and auto-registry from Robot programs,expounds the role of verification code and implementation principle,And through the examples based on ASP environment of several com mon concrete realization method of the verification code.
出处
《电脑知识与技术》
2012年第1X期552-554,557,共4页
Computer Knowledge and Technology
