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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
2416f73b ZJS |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2017 Zbigniew Jędrzejewski-Szmek | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU Lesser General Public License as published by | |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | Lesser General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public License | |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
19 | ***/ | |
20 | ||
21 | #include "hexdecoct.h" | |
22 | #include "random-util.h" | |
23 | #include "log.h" | |
24 | ||
25 | static void test_acquire_random_bytes(bool high_quality_required) { | |
26 | uint8_t buf[16] = {}; | |
27 | unsigned i; | |
28 | ||
29 | log_info("/* %s */", __func__); | |
30 | ||
31 | for (i = 1; i < sizeof buf; i++) { | |
32 | assert_se(acquire_random_bytes(buf, i, high_quality_required) == 0); | |
33 | if (i + 1 < sizeof buf) | |
34 | assert_se(buf[i] == 0); | |
35 | ||
36 | hexdump(stdout, buf, i); | |
37 | } | |
38 | } | |
39 | ||
40 | static void test_pseudorandom_bytes(void) { | |
41 | uint8_t buf[16] = {}; | |
42 | unsigned i; | |
43 | ||
44 | log_info("/* %s */", __func__); | |
45 | ||
46 | for (i = 1; i < sizeof buf; i++) { | |
47 | pseudorandom_bytes(buf, i); | |
48 | if (i + 1 < sizeof buf) | |
49 | assert_se(buf[i] == 0); | |
50 | ||
51 | hexdump(stdout, buf, i); | |
52 | } | |
53 | } | |
54 | ||
55 | int main(int argc, char **argv) { | |
56 | log_set_max_level(LOG_DEBUG); | |
57 | log_parse_environment(); | |
58 | log_open(); | |
59 | ||
60 | test_acquire_random_bytes(false); | |
61 | test_acquire_random_bytes(true); | |
62 | ||
63 | test_pseudorandom_bytes(); | |
64 | ||
65 | return 0; | |
66 | } |