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diff --git a/src/common/pearson.h b/src/common/pearson.h
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+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * pearson.h - prototypes pour l'implémentaton du calcul rapide d'empreintes de chaînes
+ *
+ * Copyright (C) 2021 Cyrille Bagard
+ *
+ *  This file is part of Chrysalide.
+ *
+ *  Chrysalide is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Chrysalide is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with Chrysalide.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#ifndef _COMMON_PEARSON_H
+#define _COMMON_PEARSON_H
+
+
+#include <stdint.h>
+
+
+/**
+ * Plus d'informations avec les liens suivants :
+ *  - https://en.wikipedia.org/wiki/Pearson_hashing
+ *  - https://web.archive.org/web/20120704025921/http://cs.mwsu.edu/~griffin/courses/2133/downloads/Spring11/p677-pearson.pdf
+ */
+
+
+/* Fournit les permutations par défaut par Pearson. */
+const char *get_pearson_permutations(void);
+
+/* Détermine l'empreinte Pearson d'une chaîne de caractères. */
+uint8_t pearson_hash(const char *, const char *);
+
+
+
+#endif  /* _COMMON_PEARSON_H */