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/*
* AFsplitter - Anti forensic information splitter
*
* Copyright (C) 2004 Clemens Fruhwirth <clemens@endorphin.org>
* Copyright (C) 2009-2023 Red Hat, Inc. All rights reserved.
*
* AFsplitter diffuses information over a large stripe of data,
* therefore supporting secure data destruction.
*
* 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.
*
* This program 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 Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef INCLUDED_CRYPTSETUP_LUKS_AF_H
#define INCLUDED_CRYPTSETUP_LUKS_AF_H
#include <stddef.h>
struct crypt_device;
struct volume_key;
/*
* AF_split operates on src and produces information split data in
* dst. src is assumed to be of the length blocksize. The data stripe
* dst points to must be capable of storing blocksize*blocknumbers.
* blocknumbers is the data multiplication factor.
*
* AF_merge does just the opposite: reproduces the information stored in
* src of the length blocksize*blocknumbers into dst of the length
* blocksize.
*
* On error, both functions return -1, 0 otherwise.
*/
int AF_split(struct crypt_device *ctx, const char *src, char *dst,
size_t blocksize, unsigned int blocknumbers, const char *hash);
int AF_merge(const char *src, char *dst, size_t blocksize,
unsigned int blocknumbers, const char *hash);
size_t AF_split_sectors(size_t blocksize, unsigned int blocknumbers);
int LUKS_encrypt_to_storage(
char *src, size_t srcLength,
const char *cipher,
const char *cipher_mode,
struct volume_key *vk,
unsigned int sector,
struct crypt_device *ctx);
int LUKS_decrypt_from_storage(
char *dst, size_t dstLength,
const char *cipher,
const char *cipher_mode,
struct volume_key *vk,
unsigned int sector,
struct crypt_device *ctx);
#endif
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