private void TestScalarMultiplication(PrimeFieldCurve C)
{
Random Rnd = new Random();
int k1 = Rnd.Next(1000, 2000);
int k2 = Rnd.Next(1000, 2000);
int k3 = Rnd.Next(1000, 2000);
PointOnCurve P1 = C.ScalarMultiplication(k1, C.PublicKeyPoint, true);
PointOnCurve P2 = C.ScalarMultiplication(k2, C.PublicKeyPoint, true);
PointOnCurve P3 = C.ScalarMultiplication(k3, C.PublicKeyPoint, true);
PointOnCurve P = C.ScalarMultiplication(k1 + k2 + k3, C.PublicKeyPoint, true);
C.AddTo(ref P1, P2);
C.AddTo(ref P1, P3);
P.Normalize(C);
P1.Normalize(C);
Assert.AreEqual(P, P1);
P2 = C.Zero;
k1 += k2;
k1 += k3;
while (k1-- > 0)
{
C.AddTo(ref P2, C.PublicKeyPoint);
}
P2.Normalize(C);
Assert.AreEqual(P, P2);
}
public void Test_ECDH(PrimeFieldCurve Curve1, PrimeFieldCurve Curve2)
{
int n;
for (n = 0; n < 100; n++)
{
byte[] Key1 = Curve1.GetSharedKey(Curve2.PublicKey, Hashes.ComputeSHA256Hash);
byte[] Key2 = Curve2.GetSharedKey(Curve1.PublicKey, Hashes.ComputeSHA256Hash);
Assert.AreEqual(Hashes.BinaryToString(Key1), Hashes.BinaryToString(Key2));
Curve1.GenerateKeys();
Curve2.GenerateKeys();
}
}
public void Test_Signature(PrimeFieldCurve Curve1, PrimeFieldCurve Curve2)
{
int n;
int Ok = 0;
int Errors = 0;
using (RandomNumberGenerator rnd = RandomNumberGenerator.Create())
{
for (n = 0; n < 100; n++)
{
byte[] Data = new byte[1024];
rnd.GetBytes(Data);
try
{
byte[] Signature = Curve1.Sign(Data);
bool Valid = Curve2.Verify(Data, Curve1.PublicKey, Signature);
if (Valid)
{
Ok++;
}
else
{
Errors++;
}
}
catch (Exception)
{
Errors++;
}
Curve1.GenerateKeys();
Curve2.GenerateKeys();
}
}
Assert.AreEqual(0, Errors);
}
