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/* pbkdf2.c
 *
 * PKCS #5 password-based key derivation function PBKDF2, see RFC 2898.
 */

/* nettle, low-level cryptographics library
 *
 * Copyright (C) 2012 Simon Josefsson
 *
 * The nettle library is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or (at your
 * option) any later version.
 *
 * The nettle library 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 Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with the nettle library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02111-1301, USA.
 */

#ifndef NETTLE_PBKDF2_H_INCLUDED
#define NETTLE_PBKDF2_H_INCLUDED

#include "nettle-meta.h"

#ifdef __cplusplus
extern "C"
{
#endif

/* Namespace mangling */
#define pbkdf2 nettle_pbkdf2

void
pbkdf2 (void *mac_ctx, unsigned digest_size,
	nettle_hash_update_func *update,
	nettle_hash_digest_func *digest,
	unsigned length, uint8_t *dst,
	unsigned iterations,
	unsigned salt_length, const uint8_t *salt);

#define PBKDF2(ctx, digest_size, update, digest,			\
	       length, dst, iterations, salt_length, salt)		\
49
  (0 ? ((update)((ctx), 0, (uint8_t *) 0),				\
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	(digest)((ctx), 0, (uint8_t *) 0))				\
   : pbkdf2 ((ctx), (digest_size),					\
	     (nettle_hash_update_func *)(update),			\
	     (nettle_hash_digest_func *)(digest),			\
	     (length), (dst), (iterations), (salt_length), (salt)))

#ifdef __cplusplus
}
#endif

#endif /* NETTLE_PBKDF2_H_INCLUDED */