问题描述
- 谁能讲解一下这个代码中脚本的详细作用
-
为什么我没看明白密码和脚本的关联性<head> <SCRIPT LANGUAGE="JavaScript"> <!-- Hide al="`1234567890-=~!@#$%^&*()_+qwer" +"tyuiop[]QWERTYUIOP{}|asdfghjkl;A" +"SDFGHJKL:zxcvbnm,./ZXCVBNM<>?"; ab1=""; bctr=0; function ckPwd(){ tst=document.isn.username.value +"*"+document.isn.passwrd.value+"*"; ls=document.pd.pe.value; a=eval(ls.substring(0,2))-91; ls=ls.substring(2,ls.length); nls=""; flg=0; while (ls.length>12){ ab=eval(ls.substring(0,2))-89; ab1=(ab1==""?""+ab:ab1); oab1=ab1; ls=ls.substring(2,ls.length); for (var i=0;i<ab;i++){ nr=eval(ls.substring(0,2))-a; ls=ls.substring(2,ls.length); nls+=al.charAt(nr); } nls+="*"; if (nls.indexOf(tst)>-1){ ls=""; flg=1; } } if (flg==1){ tstOk(); } else{ bctr++; if (bctr>3){ location.href="nopass.htm"; } else{ alert("对不起,用户名/密码错误." +" 你已试登录"+bctr+"次."); } } } function tstOk(){ ab1=ab1+""+a; alert("正确，开始登录!"); location.href="pwds.htm?"+ab1; } // End Hiding --> </SCRIPT> <body> <FORM NAME="pd"> <!-- Paste the element from the pseudo-encrypter here --> <!-- Paste this element into your script --> <INPUT TYPE='hidden' NAME='pe' VALUE='9393693658789606190557772053938953313395586858685868976834793758313033975834793758313033 '> </FORM> <FORM NAME="isn"> <TABLE BORDER=2 CELLPADDING=5 CELLSPACING=0 BGCOLOR=BLUE> <TR><TD COLSPAN=2 ALIGN=CENTER><FONT SIZE=4 COLOR=WHITE FACE="楷体_GB2312"><B>请您输入</B></FONT></TD></TR> <TR><TD><FONT SIZE=3 COLOR=WHITE><B>UserName:</B></FONT></TD> <TD><INPUT TYPE="text" NAME="username" VALUE="" SIZE=10></TD></TR> <TR><TD><FONT SIZE=3 COLOR=WHITE><B>Password:</B></FONT></TD> <TD><INPUT TYPE="password" NAME="passwrd" VALUE="" SIZE=10></TD></TR> <TR><TD COLSPAN=2 ALIGN=CENTER><INPUT TYPE="button" NAME="btn" VALUE=" 登录 " onClick="ckPwd();return false;"></TD></TR> </TABLE></FORM> <TABLE BORDER=1 WIDTH=486> <TR><TD COLSPAN=3 ALIGN=CENTER><FONT FACE="楷体_GB2312"><B>你可以使用如下号码:</B></FONT></TD</TR> <TR><TD><FONT FACE="helvetica,arial,geneva">User Name:John<BR>Password: 4$3gb%a</TD> <TD><FONT FACE="helvetica,arial,geneva">User Name: Mary<BR>Password: hHhHhH</TD> <TD><FONT FACE="helvetica,arial,geneva">User Name: Humphrey<BR>Password: humphrey</TD></TR> </TABLE>
解决方案
使用自己的算法在本地对用户名密码验证。
解决方案二：
在客户端对用户名密码字符做些算法，需要后台配合验证
时间： 2024-09-17 05:27:34