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+/* chacha-internal.h
+
+   The ChaCha stream cipher.
+
+   Copyright (C) 2013 Joachim Strömbergson
+   Copyright (C) 2012 Simon Josefsson
+   Copyright (C) 2014 Niels Möller
+
+   This file is part of GNU Nettle.
+
+   GNU Nettle is free software: you can redistribute it and/or
+   modify it under the terms of either:
+
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
+
+   GNU Nettle 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 copies of the GNU General Public License and
+   the GNU Lesser General Public License along with this program.  If
+   not, see http://www.gnu.org/licenses/.
+*/
+
+#ifndef NETTLE_CHACHA_INTERNAL_H_INCLUDED
+#define NETTLE_CHACHA_INTERNAL_H_INCLUDED
+
+#include "nettle-types.h"
+
+#define _chacha_core _nettle_chacha_core
+
+void
+_chacha_core(uint32_t *dst, const uint32_t *src, unsigned rounds);
+
+#endif /* NETTLE_CHACHA_INTERNAL_H_INCLUDED */