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import numpy as np
from pyecsca.sca import Trace, match_pattern, match_part, pad
def test_simple_match(plot):
pattern = Trace(
np.array([1, 15, 12, -10, 0, 13, 17, -1, 0], dtype=np.dtype("i1")), None
)
base = Trace(
np.array(
[0, 1, 3, 1, 2, -2, -3, 1, 15, 12, -10, 0, 13, 17, -1, 0, 3, 1],
dtype=np.dtype("i1"),
),
None,
)
filtered = match_part(base, 7, 9)
assert filtered == [7]
plot(base=base, pattern=pad(pattern, (filtered[0], 0)))
def test_multiple_match(plot):
pattern = Trace(
np.array([1, 15, 12, -10, 0, 13, 17, -1, 0], dtype=np.dtype("i1")), None
)
base = Trace(
np.array(
[
0,
1,
3,
1,
2,
-2,
-3,
1,
18,
10,
-5,
0,
13,
17,
-1,
0,
3,
1,
2,
5,
13,
8,
-8,
1,
11,
15,
0,
1,
5,
2,
4,
],
dtype=np.dtype("i1"),
),
None,
)
filtered = match_pattern(base, pattern, 0.9)
assert filtered == [7, 19]
plot(
base=base,
pattern1=pad(pattern, (filtered[0], 0)),
pattern2=pad(pattern, (filtered[1], 0)),
)
|
