Asp.net MD5 encryption function (c #)

The following method can be used to directly input data and reverse the md5 encrypted code.

/// <Summary>
/// Use md5 Encryption
/// </Summary>
/// <Param name = "Sourcein"> input data </param>
/// <Returns> </returns>
Public static string MD5 (string Sourcein)
{
MD5CryptoServiceProvider MD5CSP = new MD5CryptoServiceProvider ();
Byte [] MD5Source = System. Text. Encoding. UTF8.GetBytes (Sourcein );
Byte [] MD5Out = MD5CSP. ComputeHash (MD5Source );
Return Convert. ToBase64String (MD5Out );
}

The above only applies. however, many companies are currently in the asp-to-asp.net phase. In order not to change the original user database, we need to find the same result as the md5 encryption of asp. The following code is what I have used. For your reference, refer to the yellow part of the code.

Using System;
Using System. Drawing;
Using System. Collections;
Using System. ComponentModel;
Using System. Windows. Forms;
Using System. Data;

Namespace WindowsApplication2
{
/// <Summary>
/// Summary of Form1.
/// </Summary>
Public class Form1: System. Windows. Forms. Form
{
Private System. Windows. Forms. Button button1;
Private System. Windows. Forms. TextBox textBox1;
Private System. Windows. Forms. TextBox textBox2;
Private System. Windows. Forms. Label label1;
Private System. Windows. Forms. Label label2;
Private System. Windows. Forms. TextBox textBox3;
Private System. Windows. Forms. Label label3;
/// <Summary>
/// Required designer variables.
/// </Summary>
Private System. ComponentModel. Container components = null;

Public Form1 ()
{
//
// Required for Windows Form Designer support
//
InitializeComponent ();

//
// TODO: add Any constructor code after InitializeComponent calls
//
}

/// <Summary>
/// Clear all resources in use.
/// </Summary>
Protected override void Dispose (bool disposing)
{
If (disposing)
{
If (components! = Null)
{
Components. Dispose ();
}
}
Base. Dispose (disposing );
}

# Region code generated by Windows Form Designer
/// <Summary>
/// The designer supports the required methods-do not use the code editor to modify
/// Content of this method.
/// </Summary>
Private void InitializeComponent ()
{
This. button1 = new System. Windows. Forms. Button ();
This. textBox1 = new System. Windows. Forms. TextBox ();
This. textBox2 = new System. Windows. Forms. TextBox ();
This. label1 = new System. Windows. Forms. Label ();
This. label2 = new System. Windows. Forms. Label ();
This. textBox3 = new System. Windows. Forms. TextBox ();
This. label3 = new System. Windows. Forms. Label ();
This. SuspendLayout ();
//
// Button1
//
This. button1.Location = new System. Drawing. Point (200, 96 );
This. button1.Name = "button1 ";
This. button1.TabIndex = 0;
This. button1.Text = "encrypted ";
This. button1.Click + = new System. EventHandler (this. button#click );
//
// TextBox1
//
This. textBox1.Location = new System. Drawing. Point (88, 24 );
This. textBox1.Name = "textBox1 ";
This. textBox1.Size = new System. Drawing. Size (120, 21 );
This. textBox1.TabIndex = 1;
This. textBox1.Text = "";
//
// TextBox2
//
This. textBox2.Location = new System. Drawing. Point (88, 64 );
This. textBox2.Name = "textBox2 ";
This. textBox2.Size = new System. Drawing. Size (312, 21 );
This. textBox2.TabIndex = 2;
This. textBox2.Text = "";
//
// Label1
//
This. label1.location = new system. Drawing. Point (48, 32 );
This. label1.name = "label1 ";
This. label1.size = new system. Drawing. Size (32, 16 );
This. label1.tabindex = 3;
This. label1.text = "password ";
//
// Label2
//
This. label2.location = new system. Drawing. Point (16, 64 );
This. label2.name = "label2 ";
This. label2.size = new system. Drawing. Size (64, 16 );
This. label2.tabindex = 4;
This. label2.text = "after MD5 encryption ";
//
// Textbox3
//
This. textBox3.Location = new System. Drawing. Point (280, 24 );
This. textBox3.Name = "textBox3 ";
This. textBox3.Size = new System. Drawing. Size (120, 21 );
This. textBox3.TabIndex = 5;
This. textBox3.Text = "";
//
// Label3
//
This. label3.Location = new System. Drawing. Point (216, 32 );
This. label3.Name = "label3 ";
This. label3.Size = new System. Drawing. Size (48, 16 );
This. label3.TabIndex = 6;
This. label3.Text = "offset ";
//
// Form1
//
This. AutoScaleBaseSize = new System. Drawing. Size (6, 14 );
This. ClientSize = new System. Drawing. Size (416,133 );
This. Controls. Add (this. label3 );
This. Controls. Add (this. textBox3 );
This. Controls. Add (this. label2 );
This. Controls. Add (this. label1 );
This. Controls. Add (this. textBox2 );
This. Controls. Add (this. textBox1 );
This. Controls. Add (this. button1 );
This. Name = "Form1 ";
This. Text = "Form1 ";
This. Load + = new System. EventHandler (this. form#load );
This. ResumeLayout (false );

}
# Endregion

/// <Summary>
/// Main entry point of the application.
/// </Summary>
[Stathread]
Static void main ()
{
Application. Run (New form1 ());
}

/// <Summary>
///
/// </Summary>
/// <Param name = "sdatain"> string to be encrypted </param>
/// <Param name = "move"> offset </param>
/// <Returns> string encrypted by sdatain </returns>

Public String getmd5 (string sdatain, string move)
{
System. Security. cryptography. md5cryptoserviceprovider MD5 = new system. Security. cryptography. md5cryptoserviceprovider ();
Byte [] bytvalue, bythash;
Bytvalue = system. Text. encoding. utf8.getbytes (move + sdatain );
Bythash = md5.computehash (bytvalue );
Md5.clear ();
String stemp = "";
For (INT I = 0; I <bythash. length; I ++)
{
Stemp + = bythash [I]. tostring ("X"). padleft (2, '0 ');
}
Return stemp;
}
Private void form1_load (Object sender, system. eventargs E)
{

}

Private void button#click (Object sender, system. eventargs E)
{
This. textbox2.text = getmd5 (this. textbox1.text, this. textbox3.text );
}
}
}