CAJ | 학술논문

基于ASP．NET的动态网站的验证码可通过生成随机数字和字母字符串且存入位于服务器端内存里的Session中或位于客户端磁盘上的Cookie中，接着生成具有该随机数字和字母且加上背景噪音线和前景噪音点的验证码图片的静态页面发送至客户端浏览器，客户端用户输入用户名、密码和验证码并提交给Web应用服务器，Web应用服务器读取Session或Cookie中的用户名和密码来判断用户的合法性，同时读取其中的随机数字和字母字符串判断验证码的正确性，若用户不合法或验证码不正确，则发送信息到客户端要求重新输入，从而有效地防止用户利用机器人自动注册、登录、灌水．
기우ASP．NET적동태망참적험증마가통과생성수궤수자화자모자부천차존입위우복무기단내존리적Session중혹위우객호단자반상적Cookie중，접착생성구유해수궤수자화자모차가상배경조음선화전경조음점적험증마도편적정태혈면발송지객호단류람기，객호단용호수입용호명、밀마화험증마병제교급Web응용복무기，Web응용복무기독취Session혹Cookie중적용호명화밀마래판단용호적합법성，동시독취기중적수궤수자화자모자부천판단험증마적정학성，약용호불합법혹험증마불정학，칙발송신식도객호단요구중신수입，종이유효지방지용호이용궤기인자동주책、등록、관수．
Verification code of dynamic website based on ASP. NET can generate random numbers and letters string, and stored in Session in memory of the server or in Cookie in the disk of the client, and then generate the random numbers and letters verification code image that has noise-line background and noise-point foreground in a static page and send it to the client browser, the client user input name, password and verification code and submit to the Web application servers, Web application server read user name and password in the Session or Cookie to determine the legitimacy of the user, while reading the random numbers and letters string in the Session or Cookie to judge the correctness of verification code, if the user is not legal or the verification code is not correct, then send a message to the client requirements to re-enter, so as to effectively prevent the user from the use of automated robots registration, login, irrigation.