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/*
* utils_crypt - cipher utilities for cryptsetup
*
* Copyright (C) 2004-2007 Clemens Fruhwirth <clemens@endorphin.org>
* Copyright (C) 2009-2019 Red Hat, Inc. All rights reserved.
* Copyright (C) 2009-2019 Milan Broz
*
* 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 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 _UTILS_CRYPT_H
#define _UTILS_CRYPT_H
#include <unistd.h>
#define MAX_CIPHER_LEN 32
#define MAX_CIPHER_LEN_STR "31"
#define MAX_KEYFILES 32
struct crypt_device;
/* Not to be used directly */
struct safe_allocation {
size_t size;
char data[0];
};
int crypt_parse_name_and_mode(const char *s, char *cipher,
int *key_nums, char *cipher_mode);
int crypt_parse_hash_integrity_mode(const char *s, char *integrity);
int crypt_parse_integrity_mode(const char *s, char *integrity,
int *integrity_key_size);
int crypt_parse_pbkdf(const char *s, const char **pbkdf);
void *crypt_safe_alloc(size_t size);
void crypt_safe_free(void *data);
void *crypt_safe_realloc(void *data, size_t size);
void crypt_memzero(void *s, size_t n);
ssize_t crypt_hex_to_bytes(const char *hex, char **result, int safe_alloc);
#endif /* _UTILS_CRYPT_H */
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