?? verify.aspx
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?<%@ Page Language="C#" Description="Epass 1000 Demo ---ASP.NET" %>
<%@ Import Namespace="System"%>
<%@ Import Namespace="System.IO"%>
<%@ Import Namespace="System.Security"%>
<%@ Import Namespace="System.Security.Cryptography"%>
<%@ Import Namespace="System.Text"%>
<script language="c#" runat=server>
//by Yangsheng Zhu
//Date: 2003/6/3
//MD5 Function
string fun_MD5(string str)
{
byte[] b = System.Text.Encoding.GetEncoding(1252).GetBytes(str);
b=new System.Security.Cryptography.MD5CryptoServiceProvider().ComputeHash(b);
string ret="";
for(int i=0;i<b.Length;i++)
ret+=b[i].ToString("x").PadLeft(2,'0');
return ret;
}
Byte[] hexstr2array(string HexStr)
{
string HEX = "0123456789ABCDEF";
string str = HexStr.ToUpper();
int len = str.Length;
byte[] RetByte = new byte[len/2];
for(int i=0; i<len/2; i++)
{
int NumHigh = HEX.IndexOf(str[i*2]);
int NumLow = HEX.IndexOf(str[i*2+1]);
RetByte[i] = Convert.ToByte(NumHigh*16+NumLow);
}
return RetByte;
}
</script>
<%
string clientrandom = Session["Message"].ToString();
string username = Request.Form["SN_SERAL"];
string clientdigest = Request.Form["Digest"];
string filename = this.MapPath("user.txt");
//Read from file and Get the user pwd
string userpwd="";
StreamReader srReadLine = new StreamReader((System.IO.Stream)File.OpenRead(filename),
System.Text.Encoding.ASCII);
srReadLine.BaseStream.Seek(0, SeekOrigin.Begin);
bool b_break = true;
while (srReadLine.Peek() > -1 && b_break)
{
if (Object.Equals(srReadLine.ReadLine(),username))
{
userpwd = srReadLine.ReadLine();
b_break = false;
}
}
srReadLine.Close();
//these for MD5_HMAC
string ipad="";
string opad="";
{
for(int i=0; i<64; i++)
{
ipad += "6";
opad += "\\";
}
}
string Password= userpwd;
int KLen = Password.Length;
string iResult = "";
{
for(int i = 0; i < 64; i++)
{
if(i < KLen)
iResult += Convert.ToChar(ipad[i] ^ Password[i]);
else
iResult += Convert.ToChar(ipad[i]);
}
}
iResult += clientrandom;
iResult = fun_MD5(iResult);
byte[] Test = hexstr2array(iResult);
iResult = "";
char[] b = System.Text.Encoding.GetEncoding(1252).GetChars(Test);
for(int i=0;i<b.Length;i++)
{
iResult += b[i];
}
string oResult = "";
{
for (int i=0; i<64; i++)
{
if (i < KLen)
oResult += Convert.ToChar(opad[i] ^ Password[i]);
else
oResult += Convert.ToChar(opad[i]);
}
}
oResult += iResult;
string Result = fun_MD5(oResult).ToUpper();
if (Object.Equals(Result, clientdigest))
Message.Text += "<br> ?????! ::: " + username;
else
{
Session["key"] = "key";
Response.Redirect("main.html");
}
%>
<html>
<body>
<asp:label id="Message" forecolor="red" font-bold="true" runat=server/><br>
</body>
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