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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
91e023d8 | 2 | |
349cc4a5 | 3 | #if HAVE_GCRYPT |
91e023d8 ZJS |
4 | #include <gcrypt.h> |
5 | ||
91e023d8 | 6 | #include "gcrypt-util.h" |
b68f10bf | 7 | #include "hexdecoct.h" |
91e023d8 ZJS |
8 | |
9 | void initialize_libgcrypt(bool secmem) { | |
10 | const char *p; | |
11 | if (gcry_control(GCRYCTL_INITIALIZATION_FINISHED_P)) | |
12 | return; | |
13 | ||
14 | p = gcry_check_version("1.4.5"); | |
15 | assert(p); | |
16 | ||
96d49011 | 17 | /* Turn off "secmem". Clients which wish to make use of this |
91e023d8 ZJS |
18 | * feature should initialize the library manually */ |
19 | if (!secmem) | |
20 | gcry_control(GCRYCTL_DISABLE_SECMEM); | |
21 | gcry_control(GCRYCTL_INITIALIZATION_FINISHED, 0); | |
22 | } | |
4ac2ca1b ZJS |
23 | |
24 | int string_hashsum(const char *s, size_t len, int md_algorithm, char **out) { | |
bd944e6e | 25 | _cleanup_(gcry_md_closep) gcry_md_hd_t md = NULL; |
4ac2ca1b ZJS |
26 | size_t hash_size; |
27 | void *hash; | |
28 | char *enc; | |
29 | ||
30 | initialize_libgcrypt(false); | |
31 | ||
32 | hash_size = gcry_md_get_algo_dlen(md_algorithm); | |
33 | assert(hash_size > 0); | |
34 | ||
35 | gcry_md_open(&md, md_algorithm, 0); | |
36 | if (!md) | |
37 | return -EIO; | |
38 | ||
39 | gcry_md_write(md, s, len); | |
40 | ||
41 | hash = gcry_md_read(md, 0); | |
42 | if (!hash) | |
43 | return -EIO; | |
44 | ||
45 | enc = hexmem(hash, hash_size); | |
46 | if (!enc) | |
47 | return -ENOMEM; | |
48 | ||
49 | *out = enc; | |
50 | return 0; | |
51 | } | |
b68f10bf | 52 | #endif |