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diff --git a/src/add_python/lilliput/multiplications.py b/src/add_python/lilliput/multiplications.py
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--- a/src/add_python/lilliput/multiplications.py
+++ b/src/add_python/lilliput/multiplications.py
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+# Implementation of the Lilliput-AE tweakable block cipher.
+#
+# Authors, hereby denoted as "the implementer":
+# Kévin Le Gouguec,
+# Léo Reynaud
+# 2019.
+#
+# For more information, feedback or questions, refer to our website:
+# https://paclido.fr/lilliput-ae
+#
+# To the extent possible under law, the implementer has waived all copyright
+# and related or neighboring rights to the source code in this file.
+# http://creativecommons.org/publicdomain/zero/1.0/
+
+"""Multiplications for Lilliput-TBC's tweakey schedule.
+
+This module provides a list of functions implementing lane multiplications,
+from ALPHAS[0] = α₀ = I to ALPHAS[6] = α₆ = M_R³.
+"""
def _multiply_M(lane):