public void TestGenerateRandomElement()
{
var algebra = new EllipticCurveAlgebra(EllipticCurveID.Prime256v1);
var generator = algebra.Generator;
(var index, var point) = algebra.GenerateRandomElement(RandomNumberGenerator.Create());
var expected = algebra.GenerateElement(index);
Assert.That(point.Equals(expected));
}
public void TestGenerateElement()
{
var algebra = new EllipticCurveAlgebra(EllipticCurveID.Prime256v1);
var generator = algebra.Generator;
var groupHandle = ECGroupHandle.CreateByCurveNID((int)EllipticCurveID.Prime256v1);
var ctx = BigNumberContextHandle.Create();
var index = SecureBigNumber.FromBigNumber(new BigNumber(
BigInteger.Parse("97752369786356789875745735", System.Globalization.NumberStyles.Integer)
));
var expected = new ECPoint(groupHandle);
ECPointHandle.Multiply(groupHandle, expected.Handle, index.Handle, ECPointHandle.Null, BigNumberHandle.Null, ctx);
var result = algebra.GenerateElement(index);
Assert.That(result.Equals(expected));
}