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Diffstat (limited to 'src/test/test-random-util.c')
-rw-r--r-- | src/test/test-random-util.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/src/test/test-random-util.c b/src/test/test-random-util.c new file mode 100644 index 000000000..50f4da270 --- /dev/null +++ b/src/test/test-random-util.c @@ -0,0 +1,65 @@ +/*** + This file is part of systemd. + + Copyright 2017 Zbigniew Jędrzejewski-Szmek + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see <http://www.gnu.org/licenses/>. +***/ + +#include "hexdecoct.h" +#include "random-util.h" +#include "log.h" + +static void test_acquire_random_bytes(bool high_quality_required) { + uint8_t buf[16] = {}; + unsigned i; + + log_info("/* %s */", __func__); + + for (i = 1; i < sizeof buf; i++) { + assert_se(acquire_random_bytes(buf, i, high_quality_required) == 0); + if (i + 1 < sizeof buf) + assert_se(buf[i] == 0); + + hexdump(stdout, buf, i); + } +} + +static void test_pseudorandom_bytes(void) { + uint8_t buf[16] = {}; + unsigned i; + + log_info("/* %s */", __func__); + + for (i = 1; i < sizeof buf; i++) { + pseudorandom_bytes(buf, i); + if (i + 1 < sizeof buf) + assert_se(buf[i] == 0); + + hexdump(stdout, buf, i); + } +} + +int main(int argc, char **argv) { + log_set_max_level(LOG_DEBUG); + log_parse_environment(); + log_open(); + + test_acquire_random_bytes(false); + test_acquire_random_bytes(true); + + test_pseudorandom_bytes(); + + return 0; +} |