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1 | /* pbkdf2-hmac-sha1.c |
2 | * | |
3 | * PKCS #5 PBKDF2 used with HMAC-SHA1, see RFC 2898. | |
4 | */ | |
5 | ||
6 | /* nettle, low-level cryptographics library | |
7 | * | |
8 | * Copyright (C) 2012 Simon Josefsson | |
9 | * | |
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. | |
14 | * | |
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. | |
19 | * | |
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, | |
23 | * MA 02111-1301, USA. | |
24 | */ | |
25 | ||
26 | #if HAVE_CONFIG_H | |
27 | # include "config.h" | |
28 | #endif | |
29 | ||
30 | #include "pbkdf2.h" | |
31 | ||
32 | #include "hmac.h" | |
33 | ||
34 | void | |
35 | pbkdf2_hmac_sha1 (unsigned key_length, const uint8_t *key, | |
36 | unsigned iterations, | |
37 | unsigned salt_length, const uint8_t *salt, | |
38 | unsigned length, uint8_t *dst) | |
39 | { | |
40 | struct hmac_sha1_ctx sha1ctx; | |
41 | ||
42 | hmac_sha1_set_key (&sha1ctx, key_length, key); | |
43 | PBKDF2 (&sha1ctx, hmac_sha1_update, hmac_sha1_digest, | |
44 | SHA1_DIGEST_SIZE, iterations, salt_length, salt, length, dst); | |
45 | } |