Update copyright headers for dual licensing.

1 files changed, 35 insertions, 8 deletions

diff --git a/poly1305-internal.c b/poly1305-internal.c
index 8c5a7496..2ee16807 100644
--- a/poly1305-internal.c
+++ b/poly1305-internal.c
@@ -1,12 +1,39 @@
-/* nettle, low-level cryptographics library
- *
- * Placed by the author under public domain or the MIT license.
- * (see https://github.com/floodyberry/poly1305-donna )
+/* poly1305-internal.c
+
+   Copyright: 2012-2013 Andrew M. (floodyberry)
+   Copyright: 2013 Nikos Mavrogiannopoulos
+   Copyright: 2013 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/.
+*/
+
+/* Based on https://github.com/floodyberry/poly1305-donna.
  * Modified for nettle by Nikos Mavrogiannopoulos and Niels Möller.
- *
- * Copyright: 2012-2013 Andrew M. (floodyberry)
- * Copyright: 2013 Nikos Mavrogiannopoulos
- * Copyright: 2013 Niels Möller
+ * Original license notice:
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the