// Check that the base point scalar multiple routine matches the generic base point routine
void base_point_test(MinTLS_NamedCurve curve)
{
size_t const key_sz = mintls_ecdh_scalar_size(curve);
size_t const pt_sz = mintls_ecdh_point_size(curve);
// Scalar representing 1 (in big endian)
std::vector<uint8_t> one(key_sz,0);
one[key_sz-1] = 1;
// Extract out the base point
std::vector<uint8_t> base_point(pt_sz);
ASSERT_EQ(
mintls_ecdh_base_scalar_mult(
curve, // (I) Curve
&one[0], // (I) Private Key
one.size(), // (I) Private Key size
&base_point[0] // (O) Public Key
),
0
);
// Computer scalar multiple in two ways
std::vector<uint8_t> scalar(key_sz,0);
mintls_random(&scalar[0], key_sz);
std::vector<uint8_t> point1(pt_sz);
std::vector<uint8_t> point2(pt_sz);
ASSERT_EQ(
mintls_ecdh_base_scalar_mult(
curve, // (I) Curve
&scalar[0], // (I) Private Key
scalar.size(), // (I) Private Key Size
&point1[0] // (O) Public Key
),
0
);
ASSERT_EQ(
mintls_ecdh_scalar_mult(
curve, // (I) Curve
&scalar[0], // (I) Scalar (big endian using [5] 4.3.3)
scalar.size(), // (I) Scalar size
&base_point[0], // (I) Base point (uncompressed using [5] 4.3.6)
base_point.size(), // (I) Base point size
&point2[0] // (O) Point (uncompressed using [5] 4.3.6)
),
0
);
EXPECT_EQ(point1,point2);
}
void base_point1(double tooth_angle)
{
base_point(tooth_angle, CLEARANCE_POINT1_TYPE);
}
