blob: 9bab47dd8a02613d8f089e4879ecca3837fa1236 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
/* SPDX-License-Identifier: LGPL-2.1+ */
#if HAVE_GCRYPT
#include <gcrypt.h>
#include "gcrypt-util.h"
#include "hexdecoct.h"
void initialize_libgcrypt(bool secmem) {
if (gcry_control(GCRYCTL_INITIALIZATION_FINISHED_P))
return;
assert_se(gcry_check_version("1.4.5"));
/* Turn off "secmem". Clients which wish to make use of this
* feature should initialize the library manually */
if (!secmem)
gcry_control(GCRYCTL_DISABLE_SECMEM);
gcry_control(GCRYCTL_INITIALIZATION_FINISHED, 0);
}
int string_hashsum(const char *s, size_t len, int md_algorithm, char **out) {
_cleanup_(gcry_md_closep) gcry_md_hd_t md = NULL;
size_t hash_size;
void *hash;
char *enc;
initialize_libgcrypt(false);
hash_size = gcry_md_get_algo_dlen(md_algorithm);
assert(hash_size > 0);
gcry_md_open(&md, md_algorithm, 0);
if (!md)
return -EIO;
gcry_md_write(md, s, len);
hash = gcry_md_read(md, 0);
if (!hash)
return -EIO;
enc = hexmem(hash, hash_size);
if (!enc)
return -ENOMEM;
*out = enc;
return 0;
}
#endif
|
