C#

<br />
string Key = Security.CreateKey();<br />
            Console.WriteLine(Encoding.ASCII.GetString(Security.Decrypt(Security.Encrypt(Encoding.ASCII.GetBytes("Test"), Key), Key)));<br />

<br />
public string CreateKey()<br />
        {<br />
            DESCryptoServiceProvider desCrypto = (DESCryptoServiceProvider)DESCryptoServiceProvider.Create();<br />
            return ASCIIEncoding.ASCII.GetString(desCrypto.Key);<br />
        }<br />
<br />
public byte[] Encrypt (byte[] Data, string Key)<br />
        {<br />
            MemoryStream MemStream = new MemoryStream();<br />
            DESCryptoServiceProvider Des = new DESCryptoServiceProvider();<br />
            SetDesKey(Des, Key);<br />
<br />
            ICryptoTransform DesEncrypt = Des.CreateEncryptor();<br />
            CryptoStream CryptStream = new CryptoStream(MemStream, DesEncrypt, CryptoStreamMode.Write);<br />
            CryptStream.Write(Data, 0, Data.Length);<br />
            CryptStream.Close();<br />
<br />
            return MemStream.ToArray();<br />
        }<br />
<br />
        public byte[] Decrypt(byte[] Data, string Key)<br />
        {<br />
            byte[] returnContainer;<br />
            MemoryStream MemStream = new MemoryStream(Data);<br />
<br />
            DESCryptoServiceProvider Des = new DESCryptoServiceProvider();<br />
            SetDesKey(Des, Key);<br />
<br />
            ICryptoTransform DesEncrypt = Des.CreateEncryptor();<br />
            CryptoStream CryptStream = new CryptoStream(MemStream, DesEncrypt, CryptoStreamMode.Read);<br />
<br />
            returnContainer = new byte[MemStream.Length];<br />
            CryptStream.Read(returnContainer, 0, returnContainer.Length);<br />
            CryptStream.Close();<br />
<br />
            return returnContainer;<br />
        }<br />
<br />
private void SetDesKey(DESCryptoServiceProvider DESProvider, String password)<br />
        {<br />
            int i;<br />
            Byte[] bytePassword;<br />
            bytePassword = (new ASCIIEncoding()).GetBytes(password);<br />
            Byte[] passwordHash;<br />
            SHA1Managed SHhash = new SHA1Managed();<br />
<br />
            passwordHash = SHhash.ComputeHash(bytePassword);<br />
<br />
            Byte[] pwh = new Byte[8];<br />
            for (i = 0; i < 8; i++)<br />
                pwh[i] = passwordHash[i];<br />
<br />
            Byte[] pwiv = new Byte[8];<br />
            for (int j = 7; i < 16; i++)<br />
                pwiv[j] = passwordHash[j + 7];<br />
<br />
            DESProvider.Key = pwh;<br />
            DESProvider.IV = pwiv;<br />
        }<br />

private static void ProvideDragPathReturnToParent(Control ctrl, int intX_end, int intY_end,
    int intX_start, int intY_start)
{
    Timer dragDropTimer = new Timer();
    dragDropTimer.Enabled = true;
    dragDropTimer.Interval = 2;
    dragDropTimer.Tick +=new EventHandler(dragDropTimer_Tick);
    dragDropTimer.Start();
}


private static void dragDropTimer_Tick(object sender, System.EventArgs e)
{
    int x = 0, y = 0;
    //Control cthis = ((Control)sender);

    for (int index = 0; index <= 64; index++)
    {
        x = pt_start.X + (intX_end - pt_start.X) * index / 64;
        y = pt_start.Y + (intY_end - pt_start.Y) * index / 64;
    }

    //cthis.Location = new System.Drawing.Point(x, y);

    MessageBox.Show("Hello");
}