exynos-linux-stable/include/linux/fscrypto_sec.h

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/*
* Copyright (C) 2016 Samsung Electronics Co., Ltd.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef _FSCRYPTO_SEC_H
#define _FSCRYPTO_SEC_H
#include <crypto/sha.h>
#ifdef CONFIG_CRYPTO_FIPS
#include <crypto/rng.h>
#endif /* CONFIG CRYPTO_FIPS */
/*
* CONSTANT ONLY FOR INTERNAL
*/
#define HMAC_SIZE SHA256_DIGEST_SIZE
/*
* CONSTANT USED BY OUT OF CRYPTO_ODE
*/
#define FS_ESTIMATED_NONCE_SIZE (FS_AES_256_XTS_KEY_SIZE + HMAC_SIZE)
#define FS_KEY_DERIVATION_NONCE_SIZE 96
#define FS_RNG_SEED_SIZE 16
int fscrypt_sec_get_key_aes(const char *source_data, const char *source_key, char *raw_key);
int fscrypt_sec_set_key_aes(char *save_key_data, const char *master_key_desc);
int __init fscrypt_sec_crypto_init(void);
void __exit fscrypt_sec_crypto_exit(void);
#ifdef CONFIG_CRYPTO_FIPS
struct crypto_rng *fscrypt_sec_alloc_rng(void);
void fscrypt_sec_free_rng(struct crypto_rng *rng);
#endif /* CONFIG CRYPTO_FIPS */
#endif /* _FSCRYPTO_SEC_H */