GNUnet  0.19.5
crypto_pow.c
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1 /*
2  This file is part of GNUnet.
3  Copyright (C) 2012, 2013, 2019 GNUnet e.V.
4 
5  GNUnet is free software: you can redistribute it and/or modify it
6  under the terms of the GNU Affero General Public License as published
7  by the Free Software Foundation, either version 3 of the License,
8  or (at your option) any later version.
9 
10  GNUnet is distributed in the hope that it will be useful, but
11  WITHOUT ANY WARRANTY; without even the implied warranty of
12  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  Affero General Public License for more details.
14 
15  You should have received a copy of the GNU Affero General Public License
16  along with this program. If not, see <http://www.gnu.org/licenses/>.
17 
18  SPDX-License-Identifier: AGPL3.0-or-later
19  */
27 #include "platform.h"
28 #include "gnunet_util_lib.h"
29 #include <sodium.h>
30 
41 void
43  const void *buf,
44  size_t buf_len,
45  struct GNUNET_HashCode *result)
46 {
47  /* Threads hardcoded at 1 in libsodium */
48  GNUNET_break (0 ==
49  crypto_pwhash_argon2id ((unsigned char *) result,
50  sizeof (struct GNUNET_HashCode),
51  buf,
52  buf_len,
53  (unsigned char*) salt,
54  3, /* iterations */
55  1024 * 1024, /* memory (1 MiB) */
56  crypto_pwhash_argon2id_ALG_ARGON2ID13));
57 }
58 
59 
60 /* end of crypto_pow.c */
static int result
Global testing status.
static struct GNUNET_CRYPTO_PowSalt salt
Salt for PoW calcualations.
static char buf[2048]
void GNUNET_CRYPTO_pow_hash(const struct GNUNET_CRYPTO_PowSalt *salt, const void *buf, size_t buf_len, struct GNUNET_HashCode *result)
Calculate the 'proof-of-work' hash (an expensive hash).
Definition: crypto_pow.c:42
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur.
Value for a salt for GNUNET_CRYPTO_pow_hash().
A 512-bit hashcode.