diff options
Diffstat (limited to 'test/ec')
| -rw-r--r-- | test/ec/test_countermeasures.py | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/test/ec/test_countermeasures.py b/test/ec/test_countermeasures.py index 946261c..c3a6ee3 100644 --- a/test/ec/test_countermeasures.py +++ b/test/ec/test_countermeasures.py @@ -9,6 +9,7 @@ from pyecsca.ec.countermeasures import ( MultiplicativeSplitting, EuclideanSplitting, BrumleyTuveri, + PointBlinding, ) from pyecsca.ec.mod import mod from pyecsca.ec.mult import * @@ -247,6 +248,27 @@ def test_brumley_tuveri(mults, secp128r1, num): @pytest.mark.parametrize( + "num", + [ + 3253857902090173296443513219124437746, + 1234567893141592653589793238464338327, + ], +) +def test_point_blinding(mults, secp128r1, num): + mult = copy(mults[0]) + mult.init(secp128r1, secp128r1.generator) + raw = mult.multiply(num) + + neg = secp128r1.curve.coordinate_model.formulas["neg"] + + for mult in mults: + pb = PointBlinding(mult, mult, neg=neg) + pb.init(secp128r1, secp128r1.generator) + masked = pb.multiply(num) + assert raw.equals(masked) + + +@pytest.mark.parametrize( "scalar", [ 3253857902090173296443513219124437746, @@ -264,6 +286,7 @@ def test_brumley_tuveri(mults, secp128r1, num): MultiplicativeSplitting, EuclideanSplitting, BrumleyTuveri, + PointBlinding, ), repeat=2, ), @@ -279,15 +302,20 @@ def test_combination(scalar, one, two, secp128r1): mult.init(secp128r1, secp128r1.generator) raw = mult.multiply(scalar) - add = mult.formulas["add"] + add = secp128r1.curve.coordinate_model.formulas["add-2015-rcb"] + neg = secp128r1.curve.coordinate_model.formulas["neg"] if one in (AdditiveSplitting, EuclideanSplitting): layer_one = one.from_single(mult, add=add) + elif one == PointBlinding: + layer_one = one.from_single(mult, neg=neg) else: layer_one = one.from_single(mult) if two in (AdditiveSplitting, EuclideanSplitting): kws = {"add": add} + elif two == PointBlinding: + kws = {"neg": neg} else: kws = {} |