private void button1_Click(object sender, EventArgs e)
{
MACHandler mh = new MACHandler(comboBoxMAC.Text);
byte[] mac = mh.ComputeMAC(myConverter.StringToByteArray(textBoxPlain.Text), myConverter.StringToByteArray(textBoxKey.Text));
textBoxMAC.Text = myConverter.ByteArrayToString(mac);
textBoxMACHEX.Text = myConverter.ByteArrayToHexString(mac);
}
private void button2_Click(object sender, EventArgs e)
{
MACHandler mh = new MACHandler(comboBoxMAC.Text);
if (mh.CheckAuthenticity(myConverter.StringToByteArray(textBoxPlain.Text), myConverter.HexStringToByteArray(textBoxMACHEX.Text), myConverter.StringToByteArray(textBoxKey.Text)) == true)
{
System.Windows.Forms.MessageBox.Show("MAC OK !!!");
}
else
{
System.Windows.Forms.MessageBox.Show("MAC NOT OK !!!");
}
}
private void GetHashTime_Click(object sender, EventArgs e)
{
MACHandler myMAC = new MACHandler(comboBoxMAC.Text);
long startTime = DateTime.Now.Ticks;
int count = 10000000;
byte[] hashValue = myMAC.ComputeMAC(myConverter.StringToByteArray(textBoxPlain.Text), myConverter.StringToByteArray(textBoxKey.Text));
textBoxMAC.Text = myConverter.ByteArrayToString(hashValue);
textBoxMACHEX.Text = myConverter.ByteArrayToHexString(hashValue);
double operationTime = (DateTime.Now.Ticks - startTime);
operationTime = operationTime / (10 * count);
HashTime.Text = "Hash time: " + operationTime.ToString() + " us";
}
