private void button3_Click(object sender, EventArgs e)
{
BigInteger text;
BigInteger.TryParse(richTextBox6.Text, out text);
BigInteger p, q, exp;
BigInteger.TryParse(richTextBox1.Text, out p);
BigInteger.TryParse(richTextBox2.Text, out q);
BigInteger.TryParse(richTextBox3.Text, out exp);
KeysPair keys = new KeysPair(p, q, exp);
BigInteger cypherText = keys.encrypt(text);
richTextBox7.Text = cypherText.ToString();
}
