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import pytest
from pyecsca.ec.params import get_params
from pyecsca.ec.transformations import M2SW, M2TE, M2E, TE2M, TE2E, TE2SW, SW2M, SW2TE, SW2E
def test_montgomery():
curve25519 = get_params("other", "Curve25519", "affine")
sw = M2SW(curve25519)
assert sw is not None
assert sw.curve.is_on_curve(sw.generator)
assert sw.curve.is_neutral(sw.curve.neutral)
te = M2TE(curve25519)
assert te is not None
assert te.curve.is_on_curve(te.generator)
assert te.curve.is_neutral(te.curve.neutral)
e = M2E(curve25519)
assert e is not None
assert e.curve.is_on_curve(e.generator)
assert e.curve.is_neutral(e.curve.neutral)
def test_twistededwards():
ed25519 = get_params("other", "Ed25519", "affine")
m = TE2M(ed25519)
assert m is not None
assert m.curve.is_on_curve(m.generator)
assert m.curve.is_neutral(m.curve.neutral)
e = TE2E(ed25519)
assert e is not None
assert e.curve.is_on_curve(e.generator)
assert e.curve.is_neutral(e.curve.neutral)
sw = TE2SW(ed25519)
assert sw is not None
assert sw.curve.is_on_curve(sw.generator)
assert sw.curve.is_neutral(sw.curve.neutral)
def test_shortweierstrass():
secp128r2 = get_params("secg", "secp128r2", "affine")
m = SW2M(secp128r2)
assert m is not None
assert m.curve.is_on_curve(m.generator)
assert m.curve.is_neutral(m.curve.neutral)
te = SW2TE(secp128r2)
assert te is not None
assert te.curve.is_on_curve(te.generator)
assert te.curve.is_neutral(te.curve.neutral)
with pytest.raises(ValueError):
SW2E(secp128r2)
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