Asp.net中图片验证码的设计与实现

Picture Verification Code Design and Implementation in the Asp.net

图片验证码已成为许多主流网站用来防止非法用户自动注册、登录、灌水的一种有效手段。该文在介绍了验证码原理、技术的基础上,给出了在ASP.NET中设计图片验证码的方法。

Picture verification code has become many mainstream website used to prevent illegal users to be automatic register,log in,irrigation is a kind of effective means.This paper introduces the verification code principle,technology are discussed on the ba sis of the design in ASP.NET picture verification code method.