git.samba.org - gd/nettle/blob - pbkdf2.h

   1 /* pbkdf2.h
   2
   3    PKCS #5 password-based key derivation function PBKDF2, see RFC 2898.
   4
   5    Copyright (C) 2012 Simon Josefsson
   6
   7    This file is part of GNU Nettle.
   8
   9    GNU Nettle is free software: you can redistribute it and/or
  10    modify it under the terms of either:
  11
  12      * the GNU Lesser General Public License as published by the Free
  13        Software Foundation; either version 3 of the License, or (at your
  14        option) any later version.
  15
  16    or
  17
  18      * the GNU General Public License as published by the Free
  19        Software Foundation; either version 2 of the License, or (at your
  20        option) any later version.
  21
  22    or both in parallel, as here.
  23
  24    GNU Nettle is distributed in the hope that it will be useful,
  25    but WITHOUT ANY WARRANTY; without even the implied warranty of
  26    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  27    General Public License for more details.
  28
  29    You should have received copies of the GNU General Public License and
  30    the GNU Lesser General Public License along with this program.  If
  31    not, see http://www.gnu.org/licenses/.
  32 */
  33
  34 #ifndef NETTLE_PBKDF2_H_INCLUDED
  35 #define NETTLE_PBKDF2_H_INCLUDED
  36
  37 #include "nettle-meta.h"
  38
  39 #ifdef __cplusplus
  40 extern "C"
  41 {
  42 #endif
  43
  44 /* Namespace mangling */
  45 #define pbkdf2 nettle_pbkdf2
  46 #define pbkdf2_hmac_sha1 nettle_pbkdf2_hmac_sha1
  47 #define pbkdf2_hmac_sha256 nettle_pbkdf2_hmac_sha256
  48
  49 void
  50 pbkdf2 (void *mac_ctx,
  51         nettle_hash_update_func *update,
  52         nettle_hash_digest_func *digest,
  53         size_t digest_size, unsigned iterations,
  54         size_t salt_length, const uint8_t *salt,
  55         size_t length, uint8_t *dst);
  56
  57 #define PBKDF2(ctx, update, digest, digest_size,                        \
  58                iterations, salt_length, salt, length, dst)              \
  59   (0 ? ((update)((ctx), 0, (uint8_t *) 0),                              \
  60         (digest)((ctx), 0, (uint8_t *) 0))                              \
  61    : pbkdf2 ((ctx),                                                     \
  62              (nettle_hash_update_func *)(update),                       \
  63              (nettle_hash_digest_func *)(digest),                       \
  64              (digest_size), (iterations),                               \
  65              (salt_length), (salt), (length), (dst)))
  66
  67 /* PBKDF2 with specific PRFs. */
  68
  69 void
  70 pbkdf2_hmac_sha1 (size_t key_length, const uint8_t *key,
  71                   unsigned iterations,
  72                   size_t salt_length, const uint8_t *salt,
  73                   size_t length, uint8_t *dst);
  74
  75 void
  76 pbkdf2_hmac_sha256 (size_t key_length, const uint8_t *key,
  77                     unsigned iterations,
  78                     size_t salt_length, const uint8_t *salt,
  79                     size_t length, uint8_t *dst);
  80
  81 #ifdef __cplusplus
  82 }
  83 #endif
  84
  85 #endif /* NETTLE_PBKDF2_H_INCLUDED */