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-rw-r--r--pyecsca/ec/formula.py5
1 files changed, 5 insertions, 0 deletions
diff --git a/pyecsca/ec/formula.py b/pyecsca/ec/formula.py
index 897a44b..5b6f028 100644
--- a/pyecsca/ec/formula.py
+++ b/pyecsca/ec/formula.py
@@ -68,6 +68,11 @@ class TriplingFormula(Formula):
_outputs = 1
+class NegationFormula(Formula):
+ _inputs = 1
+ _outputs = 1
+
+
class ScalingFormula(Formula):
_inputs = 1
_outputs = 1