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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 00:53:35 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 00:53:35 +0000 |
commit | 69c6a41ffb878ef98c9378ed4b1634a404cfaa7f (patch) | |
tree | b2a4f704565d62fbb129ab9dc3b35977c50e6e7f /tests/libdnssec/test_random.c | |
parent | Initial commit. (diff) | |
download | knot-upstream.tar.xz knot-upstream.zip |
Adding upstream version 2.7.6.upstream/2.7.6upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | tests/libdnssec/test_random.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/tests/libdnssec/test_random.c b/tests/libdnssec/test_random.c new file mode 100644 index 0000000..7c86aa6 --- /dev/null +++ b/tests/libdnssec/test_random.c @@ -0,0 +1,82 @@ +/* Copyright (C) 2018 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include <stdint.h> +#include <string.h> +#include <tap/basic.h> + +#include "crypto.h" +#include "error.h" +#include "random.h" + +int check_buffer(void) +{ + const size_t buffer_size = 128; + uint8_t buffer_prev[buffer_size]; + memset(buffer_prev, 0, buffer_size); + uint8_t buffer[buffer_size]; + memset(buffer, 0, buffer_size); + + for (int i = 0; i < 10; i++) { + int result = dnssec_random_buffer(buffer, buffer_size); + if (result != DNSSEC_EOK) { + return 1; + } + + if (memcmp(buffer, buffer_prev, buffer_size) == 0) { + return 1; + } + + memmove(buffer_prev, buffer, buffer_size); + } + + return 0; +} + +int check_random_type(void) +{ + uint16_t numbers[1000] = { 0 }; + int conflicts = 0; + + for (int i = 0; i < 1000; i++) { + numbers[i] = dnssec_random_uint16_t(); + // check all previous + for (int j = 0; j < i; j++) { + if (numbers[i] == numbers[j]) { + conflicts += 1; + } + } + } + + // allow 5 % of conflicts + return conflicts <= 50 ? 0 : 1; +} + +int main(void) +{ + plan_lazy(); + + dnssec_crypto_init(); + + // quite stupid, just check if it does something + + ok(check_buffer() == 0, "dnssec_random_buffer()"); + ok(check_random_type() == 0, "dnssec_random_uint16_t()"); + + dnssec_crypto_cleanup(); + + return 0; +} |