private void BTMAHOA_Click(object sender, EventArgs e)
{
temp = 1;
BTRCON.Show();
RT2.Hide();
BTCOPY.Enabled = true;
BTCOPY.Text = "COPY THUẬT TOÁN MÃ HÓA";
}
private void Form2_Load(object sender, EventArgs e)
{
BTRCON.Hide();
RT2.Hide();
BTCOPY.Enabled = false;
}