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-rw-r--r--pyecsca/sca/re/epa.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/pyecsca/sca/re/epa.py b/pyecsca/sca/re/epa.py
index 325f11d..5e2b78a 100644
--- a/pyecsca/sca/re/epa.py
+++ b/pyecsca/sca/re/epa.py
@@ -53,6 +53,9 @@ def graph_to_check_inputs(
# Now handle the regular checks
for point in points:
formula = ctx.formulas[point]
+ if not formula:
+ # Skip input point or infty point (they magically appear and do not have an origin formula)
+ continue
inputs = tuple(map(lambda pt: ctx.points[pt], ctx.parents[point]))
check_list = formula_checks.setdefault(formula, [])
check_list.append(inputs)