3 * PKCS #5 password-based key derivation function PBKDF2, see RFC 2898.
6 /* nettle, low-level cryptographics library
8 * Copyright (C) 2012 Simon Josefsson
10 * The nettle library is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU Lesser General Public License as published by
12 * the Free Software Foundation; either version 2.1 of the License, or (at your
13 * option) any later version.
15 * The nettle library is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
17 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
18 * License for more details.
20 * You should have received a copy of the GNU Lesser General Public License
21 * along with the nettle library; see the file COPYING.LIB. If not, write to
22 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
26 #ifndef NETTLE_PBKDF2_H_INCLUDED
27 #define NETTLE_PBKDF2_H_INCLUDED
29 #include "nettle-meta.h"
35 /* Namespace mangling */
36 #define pbkdf2 nettle_pbkdf2
37 #define pbkdf2_hmac_sha1 nettle_pbkdf2_hmac_sha1
38 #define pbkdf2_hmac_sha256 nettle_pbkdf2_hmac_sha256
42 nettle_hash_update_func
* update
,
43 nettle_hash_digest_func
* digest
,
44 unsigned digest_size
, unsigned iterations
,
45 unsigned salt_length
, const uint8_t * salt
,
46 unsigned length
, uint8_t * dst
);
48 #define PBKDF2(ctx, update, digest, digest_size, \
49 iterations, salt_length, salt, length, dst) \
50 (0 ? ((update)((ctx), 0, (uint8_t *) 0), \
51 (digest)((ctx), 0, (uint8_t *) 0)) \
53 (nettle_hash_update_func *)(update), \
54 (nettle_hash_digest_func *)(digest), \
55 (digest_size), (iterations), \
56 (salt_length), (salt), (length), (dst)))
58 /* PBKDF2 with specific PRFs. */
61 pbkdf2_hmac_sha1(unsigned key_length
, const uint8_t * key
,
63 unsigned salt_length
, const uint8_t * salt
,
64 unsigned length
, uint8_t * dst
);
67 pbkdf2_hmac_sha256(unsigned key_length
, const uint8_t * key
,
69 unsigned salt_length
, const uint8_t * salt
,
70 unsigned length
, uint8_t * dst
);
75 #endif /* NETTLE_PBKDF2_H_INCLUDED */