private void test_ecdh_curve(Asn1Object obj, string text, BigNumber.Context ctx)
{
Key a = Key.FromCurveName(obj);
Key b = Key.FromCurveName(obj);
BigNumber x_a = new BigNumber();
BigNumber y_a = new BigNumber();
BigNumber x_b = new BigNumber();
BigNumber y_b = new BigNumber();
try {
Console.Write("Testing key generation with {0}", text);
a.GenerateKey();
if (a.Group.Method.FieldType == Objects.NID.X9_62_prime_field.NID)
{
a.PublicKey.GetAffineCoordinatesGFp(x_a, y_a, ctx);
}
else
{
a.PublicKey.GetAffineCoordinatesGF2m(x_a, y_a, ctx);
}
Console.Write(".");
b.GenerateKey();
if (b.Group.Method.FieldType == Objects.NID.X9_62_prime_field.NID)
{
b.PublicKey.GetAffineCoordinatesGFp(x_b, y_b, ctx);
}
else
{
b.PublicKey.GetAffineCoordinatesGF2m(x_b, y_b, ctx);
}
Console.Write(".");
byte[] abuf = new byte[MessageDigest.SHA1.Size];
int aout = a.ComputeKey(b, abuf, KDF1_SHA1);
Console.Write(".");
byte[] bbuf = new byte[MessageDigest.SHA1.Size];
int bout = b.ComputeKey(a, bbuf, KDF1_SHA1);
Console.Write(".");
Assert.Greater(aout, 4);
Assert.AreEqual(aout, bout);
Assert.IsTrue(Compare(abuf, bbuf));
Console.Write(" ok");
}
finally {
a.Dispose();
b.Dispose();
x_a.Dispose();
y_a.Dispose();
x_b.Dispose();
y_b.Dispose();
}
Console.WriteLine();
}
public void TestCase()
{
using (BigNumber.Context ctx = new BigNumber.Context()) {
/* NIST PRIME CURVES TESTS */
test_ecdh_curve(Objects.NID.X9_62_prime192v1, "NIST Prime-Curve P-192", ctx);
test_ecdh_curve(Objects.NID.secp224r1, "NIST Prime-Curve P-224", ctx);
test_ecdh_curve(Objects.NID.X9_62_prime256v1, "NIST Prime-Curve P-256", ctx);
test_ecdh_curve(Objects.NID.secp384r1, "NIST Prime-Curve P-384", ctx);
test_ecdh_curve(Objects.NID.secp521r1, "NIST Prime-Curve P-521", ctx);
/* NIST BINARY CURVES TESTS */
test_ecdh_curve(Objects.NID.sect163k1, "NIST Binary-Curve K-163", ctx);
test_ecdh_curve(Objects.NID.sect163r2, "NIST Binary-Curve B-163", ctx);
test_ecdh_curve(Objects.NID.sect233k1, "NIST Binary-Curve K-233", ctx);
test_ecdh_curve(Objects.NID.sect233r1, "NIST Binary-Curve B-233", ctx);
test_ecdh_curve(Objects.NID.sect283k1, "NIST Binary-Curve K-283", ctx);
test_ecdh_curve(Objects.NID.sect283r1, "NIST Binary-Curve B-283", ctx);
test_ecdh_curve(Objects.NID.sect409k1, "NIST Binary-Curve K-409", ctx);
test_ecdh_curve(Objects.NID.sect409r1, "NIST Binary-Curve B-409", ctx);
test_ecdh_curve(Objects.NID.sect571k1, "NIST Binary-Curve K-571", ctx);
test_ecdh_curve(Objects.NID.sect571r1, "NIST Binary-Curve B-571", ctx);
}
}
/// <summary>
/// Calls EC_POINT_get_affine_coordinates_GFp()
/// </summary>
/// <param name="x"></param>
/// <param name="y"></param>
/// <param name="ctx"></param>
public void GetAffineCoordinatesGFp(BigNumber x, BigNumber y, BigNumber.Context ctx)
{
Native.ExpectSuccess(
Native.EC_POINT_get_affine_coordinates_GFp(group.Handle, ptr, x.Handle, y.Handle, ctx.Handle)
);
}
public void TestCase() {
using (BigNumber.Context ctx = new BigNumber.Context()) {
/* NIST PRIME CURVES TESTS */
test_ecdh_curve(Objects.NID.X9_62_prime192v1, "NIST Prime-Curve P-192", ctx);
test_ecdh_curve(Objects.NID.secp224r1, "NIST Prime-Curve P-224", ctx);
test_ecdh_curve(Objects.NID.X9_62_prime256v1, "NIST Prime-Curve P-256", ctx);
test_ecdh_curve(Objects.NID.secp384r1, "NIST Prime-Curve P-384", ctx);
test_ecdh_curve(Objects.NID.secp521r1, "NIST Prime-Curve P-521", ctx);
/* NIST BINARY CURVES TESTS */
test_ecdh_curve(Objects.NID.sect163k1, "NIST Binary-Curve K-163", ctx);
test_ecdh_curve(Objects.NID.sect163r2, "NIST Binary-Curve B-163", ctx);
test_ecdh_curve(Objects.NID.sect233k1, "NIST Binary-Curve K-233", ctx);
test_ecdh_curve(Objects.NID.sect233r1, "NIST Binary-Curve B-233", ctx);
test_ecdh_curve(Objects.NID.sect283k1, "NIST Binary-Curve K-283", ctx);
test_ecdh_curve(Objects.NID.sect283r1, "NIST Binary-Curve B-283", ctx);
test_ecdh_curve(Objects.NID.sect409k1, "NIST Binary-Curve K-409", ctx);
test_ecdh_curve(Objects.NID.sect409r1, "NIST Binary-Curve B-409", ctx);
test_ecdh_curve(Objects.NID.sect571k1, "NIST Binary-Curve K-571", ctx);
test_ecdh_curve(Objects.NID.sect571r1, "NIST Binary-Curve B-571", ctx);
}
}
