2 * AFsplitter - Anti forensic information splitter
4 * Copyright (C) 2004, Clemens Fruhwirth <clemens@endorphin.org>
5 * Copyright (C) 2009-2012, Red Hat, Inc. All rights reserved.
7 * AFsplitter diffuses information over a large stripe of data,
8 * therefor supporting secure data destruction.
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version 2
13 * of the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU Library General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
24 #ifndef INCLUDED_CRYPTSETUP_LUKS_AF_H
25 #define INCLUDED_CRYPTSETUP_LUKS_AF_H
28 * AF_split operates on src and produces information split data in
29 * dst. src is assumed to be of the length blocksize. The data stripe
30 * dst points to must be capable of storing blocksize*blocknumbers.
31 * blocknumbers is the data multiplication factor.
33 * AF_merge does just the opposite: reproduces the information stored in
34 * src of the length blocksize*blocknumbers into dst of the length
37 * On error, both functions return -1, 0 otherwise.
40 int AF_split(char *src, char *dst, size_t blocksize, unsigned int blocknumbers, const char *hash);
41 int AF_merge(char *src, char *dst, size_t blocksize, unsigned int blocknumbers, const char *hash);
42 size_t AF_split_sectors(size_t blocksize, unsigned int blocknumbers);