using
System;
using
System.Collections.Generic;
using
System.ComponentModel;
using
System.Data;
using
System.Drawing;
using
System.Linq;
using
System.Text;
using
System.Windows.Forms;
using
System.Security;
using
System.Security.Cryptography;
namespace
WindowsFormsApplication1
{
public partial
class Form1
: Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object
sender, EventArgs e)
{
}
public static string
EncryptData(string Message)
{
byte[] Results;
System.Text.UTF8Encoding
UTF8 = new System.Text.UTF8Encoding();
MD5CryptoServiceProvider
HashProvider = new MD5CryptoServiceProvider();
byte[] TDESKey =
HashProvider.ComputeHash(UTF8.GetBytes("14klfdsalk"));
TripleDESCryptoServiceProvider
TDESAlgorithm = new TripleDESCryptoServiceProvider();
TDESAlgorithm.Key = TDESKey;
TDESAlgorithm.Mode = CipherMode.ECB;
TDESAlgorithm.Padding = PaddingMode.PKCS7;
byte[] DataToEncrypt =
UTF8.GetBytes(Message);
try
{
ICryptoTransform
Encryptor = TDESAlgorithm.CreateEncryptor();
Results = Encryptor.TransformFinalBlock(DataToEncrypt,
0, DataToEncrypt.Length);
}
finally
{
TDESAlgorithm.Clear();
HashProvider.Clear();
}
return Convert.ToBase64String(Results);
}
public static string DecryptString(string
Message)
{
byte[] Results;
System.Text.UTF8Encoding
UTF8 = new System.Text.UTF8Encoding();
MD5CryptoServiceProvider
HashProvider = new MD5CryptoServiceProvider();
byte[] TDESKey =
HashProvider.ComputeHash(UTF8.GetBytes("14klfdsalk"));
TripleDESCryptoServiceProvider
TDESAlgorithm = new TripleDESCryptoServiceProvider();
TDESAlgorithm.Key = TDESKey;
TDESAlgorithm.Mode = CipherMode.ECB;
TDESAlgorithm.Padding = PaddingMode.PKCS7;
byte[] DataToDecrypt = Convert.FromBase64String(Message);
try
{
ICryptoTransform
Decryptor = TDESAlgorithm.CreateDecryptor();
Results =
Decryptor.TransformFinalBlock(DataToDecrypt, 0, DataToDecrypt.Length);
}
finally
{
TDESAlgorithm.Clear();
HashProvider.Clear();
}
return UTF8.GetString(Results);
}
private void button1_Click(object
sender, EventArgs e)
{
textBox2.Text = EncryptData(textBox1.Text);
}
private void button2_Click(object
sender, EventArgs e)
{
textBox4.Text = DecryptString(textBox3.Text);
}
}
}
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