How does the C # program do the registration code?

Program

Using System;
Using System.Data;
Using System.Configuration;
Using System.Web;
Using System.Web.Security;
Using System.Web.UI;
Using System.Web.UI.WebControls;
Using System.Web.UI.WebControls.WebParts;
Using System.Web.UI.HtmlControls;
Using System.Web.Configuration;
Using Hasher;
<summary>
Summary description of CS
</summary>
///
Namespace CS
{
public class CS
{
Judge the serial number
public bool CSS ()
M is a configuration file value
X is the serial number value
CSS to compare whether the registration code is correct
{
Hasher.hasher hash = new Hasher.hasher ();
String Xulie = hash. Sern ();
String m = ConfigurationManager.AppSettings.Get ("message"). ToString ();

if (m = = Xulie)
{
return true;

}
Else
{
return false;

}

}

public bool Text (string x)
X is a write parameter
Used when the registration code is not correct
{
Hasher.hasher hash = new Hasher.hasher ();
String Xulie = hash. Sern ();
if (x = = Xulie)
{
return true;
}
Else
{
return false;
}
}

public void con (string path, String x)
Write configuration file information
Path is the virtual path of the request
X the value to be modified
{

Configuration config = webconfigurationmanager.openwebconfiguration (path);

Config. AppSettings.Settings.Clear ();
String m = ConfigurationManager.AppSettings.Get ("message");
Config. APPSETTINGS.SETTINGS.ADD ("message", x);
Config. Save ();

}

}
}


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Reply Person: wuda8 (C # asp.net 2.0 blog) () Prestige: 93 2006-11-1 15:37:43 Score: 0


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Using System;
Using System.Data;
Using System.Configuration;
Using System.Web;
Using System.Web.Security;
Using System.Web.UI;
Using System.Web.UI.WebControls;
Using System.Web.UI.WebControls.WebParts;
Using System.Web.UI.HtmlControls;
Using System.IO;
Using System.Security.Cryptography;
Using System.Management;
<summary>
Summary description of Hasher
</summary>
///
Namespace Hasher
{

public class Hasher
{

Private byte[] _hashkey; Hash Key storage Variable
public string _hashtext; strings to be encrypted
Public Hasher ()
// {
// }

String that needs to produce a cryptographic hash
public string Hashtext
{
Set
{
_hashtext = value;
}
Get
{
return _hashtext;
}
}

Uses the MD5CryptoServiceProvider class to produce a hash value. You do not need to provide a key.
</summary>
<returns></returns>
public string Md5hasher ()
{
byte[] Md5data = System.Text.Encoding.UTF8.GetBytes (Hashtext);

MD5 Md5 = new MD5CryptoServiceProvider ();

Byte[] result = Md5.computehash (md5data);

return convert.tobase64string (Result); Returns a length of 25-byte string
}

Get CPU Serial Number
Public String Getcpuid ()
{
ManagementClass mc = new ManagementClass ("Win32_Processor");
Managementobjectcollection MOC = MC. GetInstances ();

String strcpuid = null;
foreach (ManagementObject mo in MOC)
{
Strcpuid = mo. properties["Processorid"]. Value.tostring ();
Break
}
return strcpuid;
}//end method
Get the hard drive serial number
Public String Getdriveid ()
{
String driveserialnum = "";
Scripting.filesystemobjectclass Mysystem = new Scripting.filesystemobjectclass ();
foreach (Scripting.drive mydriver in mysystem.drives)
{
String serialnumber = "";
Try
{
SerialNumber = MyDriver.SerialNumber.ToString ();
Driveserialnum = Driveserialnum + serialnumber;
}
catch (Exception ex)
{

}

}

return driveserialnum;
}

Public String Strjia ()
{
String Strjiami = "";
Strjiami = Getcpuid () + Getdriveid ();

return Strjiami;
}
public string Jiqixuelie;
public string duijiqima = null;
Get the machine code.
public string Hashgetdriveid ()

{
Hasher hs = new Hasher ();

Hs. Hashtext = Hs.strjia ();
String Jiqi = hs. Md5hasher ();
Duijiqima = Jiqi. Substring (8, 5);
return Duijiqima;
}

public string Sern ()
The final serial number//m to the configuration file value
X is the serial number value
CSS to compare whether the registration code is correct
{

888888888888888888888888888888888 Get the machine code
Hasher hs = new Hasher ();

88888888888888888888888888888888888888888888888888 Get serial number
Hasher hash = new Hasher ();
Hash. Hashtext = Hs.hashgetdriveid (). ToString ();
Jiqixuelie = hash. Md5hasher ();
return Jiqixuelie;
}

}