Copyright for request_key.2:
Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. Written by David Howells (email@example.com) and Copyright (C) 2016 Michael Kerrisk <firstname.lastname@example.org>
License for request_key.2:
This program 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 2 of the License, or (at your option) any later version.