public void TestPolynomial_Eval()
{
var p = HashiCorpShamir.MakePolynomial(42, 1);
Assert.Equal(42, p.Evaluate(0));
// out := p.evaluate(1)
// exp := add(42, mult(1, p.coefficients[1]))
// if out != exp {
// t.Fatalf("bad: %v %v %v", out, exp, p.coefficients)
// }
var ret = p.Evaluate(1);
var exp = HashiCorpShamir.Add(42,
HashiCorpShamir.Mult(1, p.Coefficients[1]));
Assert.Equal(ret, exp);
}
public void TestInterpolate_Rand()
{
for (int i = 0; i < 256; i++)
{
var p = HashiCorpShamir.MakePolynomial((byte)i, 2);
var x_vals = new byte[] { 1, 2, 3 };
var y_vals = new byte[] { p.Evaluate(1), p.Evaluate(2), p.Evaluate(3) };
// out := interpolatePolynomial(x_vals, y_vals, 0)
// if out != uint8(i) {
// t.Fatalf("Bad: %v %d", out, i)
// }
Assert.Equal((byte)i,
HashiCorpShamir.InterpolatePolynomial(x_vals, y_vals, 0));
}
}
public void TestPolynomial_Random()
{
var p = HashiCorpShamir.MakePolynomial(42, 2);
Assert.Equal(42, p.Coefficients[0]);
}