/// <summary>
/// Save current graph as png image
/// </summary>
public void SaveGraph()
{
SaveFileDialog saveFileDialog = new SaveFileDialog();
saveFileDialog.DefaultExt = ".png";
saveFileDialog.Filter = "Portable-Network-Graphic|*.png";
string suggestedFilename = "a = " + ellipticCurve.A + " b = " + ellipticCurve.B;
if (ellipticCurve is EllipticCurveZ)
{
EllipticCurveZ tmp = (EllipticCurveZ)ellipticCurve;
suggestedFilename += " p = " + tmp.P;
}
saveFileDialog.FileName = suggestedFilename;
if (saveFileDialog.ShowDialog() == DialogResult.OK)
{
Bitmap bmp = new Bitmap(Form.PicBoxGraph.Image);
Bitmap croppedBmp = bmp.Clone(new Rectangle(0, 0, coordinateSystem.Width, coordinateSystem.Height),
bmp.PixelFormat);
croppedBmp.Save(saveFileDialog.FileName);
}
}
public void AddMultiplyTest()
{
int a = 3;
int b = 19;
int p = 23;
EllipticCurveZ curve = new EllipticCurveZ(a, b, p);
ECPoint p1 = new ECPoint(3, 3);
ECPoint p2 = new ECPoint(4, 7);
ECPoint p3 = new ECPoint(3, 20);
Assert.AreEqual(new ECPoint(19, 9), curve.Add(p1, p1));
Assert.AreEqual(new ECPoint(13, 22), curve.Multiply(3, p1));
Assert.AreEqual(new ECPoint(1, 0), curve.Multiply(6, p1));
Assert.AreEqual(new ECPoint(9, 19), curve.Add(p1, p2));
Assert.AreEqual(new ECPoint(), curve.Add(p1, p3));
}
