using System.Security.Cryptography;
class Program{
   static void Main() {
      string sMsg = "The message to encrypt!";
      string sEnc, sDec;
      DESCryptoServiceProvider des = new DESCryptoServiceProvider();
      System.Text.Encoding utf = new System.Text.UTF8Encoding();
      byte[] key = utf.GetBytes("12345678");
      byte[] iv = { 1, 2, 3, 4, 5, 6, 7, 8 };
      ICryptoTransform encryptor = des.CreateEncryptor(key, iv);
      ICryptoTransform decryptor = des.CreateDecryptor(key, iv);
      {
         byte[] bMsg = utf.GetBytes(sMsg);
         byte[] bEnc = encryptor.TransformFinalBlock(bMsg, 0, 
                                                     bMsg.Length);
         sEnc = System.Convert.ToBase64String(bEnc);
      }
      {
         byte[] bEnc = System.Convert.FromBase64String(sEnc);
         byte[] bDec = decryptor.TransformFinalBlock(bEnc, 0, 
                                                     bEnc.Length);
         sDec = utf.GetString(bDec);
      }
      System.Console.WriteLine("Message  : " + sMsg);
      System.Console.WriteLine("Encrypted: " + sEnc);
      System.Console.WriteLine("Decrypted: " + sDec);
   }
}