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56 lines
2.0 KiB
C
56 lines
2.0 KiB
C
/*
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* crypto backend implementation
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*
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* Copyright (C) 2010-2012, Red Hat, Inc. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef _CRYPTO_BACKEND_H
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#define _CRYPTO_BACKEND_H
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#include <stdint.h>
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#include "config.h"
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struct crypt_device;
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struct crypt_hash;
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struct crypt_hmac;
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int crypt_backend_init(struct crypt_device *ctx);
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#define CRYPT_BACKEND_KERNEL (1 << 0) /* Crypto uses kernel part, for benchmark */
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uint32_t crypt_backend_flags(void);
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const char *crypt_backend_version(void);
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/* HASH */
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int crypt_hash_size(const char *name);
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int crypt_hash_init(struct crypt_hash **ctx, const char *name);
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int crypt_hash_write(struct crypt_hash *ctx, const char *buffer, size_t length);
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int crypt_hash_final(struct crypt_hash *ctx, char *buffer, size_t length);
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int crypt_hash_destroy(struct crypt_hash *ctx);
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/* HMAC */
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int crypt_hmac_size(const char *name);
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int crypt_hmac_init(struct crypt_hmac **ctx, const char *name,
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const void *buffer, size_t length);
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int crypt_hmac_write(struct crypt_hmac *ctx, const char *buffer, size_t length);
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int crypt_hmac_final(struct crypt_hmac *ctx, char *buffer, size_t length);
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int crypt_hmac_destroy(struct crypt_hmac *ctx);
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/* RNG (must be usable in FIPS mode) */
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enum { CRYPT_RND_NORMAL = 0, CRYPT_RND_KEY = 1, CRYPT_RND_SALT = 2 };
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int crypt_backend_fips_rng(char *buffer, size_t length, int quality);
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#endif /* _CRYPTO_BACKEND_H */
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