diff options
author | Chris Hiszpanski <chris@hiszpanski.name> | 2019-04-18 00:55:30 -0700 |
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committer | Chris Hiszpanski <chris@hiszpanski.name> | 2021-04-04 01:23:16 -0700 |
commit | 6d88c555019f32509f303e23dcfbba824fecd2ee (patch) | |
tree | 9d976063b4cb63e2e8ad4529c6d597b4470464c7 /src/prng.c |
Initial public commit.
mDNS and SDP are functional. Otherwise, library is still very much
a work in progress. All tests pass.
Diffstat (limited to 'src/prng.c')
-rw-r--r-- | src/prng.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/prng.c b/src/prng.c new file mode 100644 index 0000000..147304b --- /dev/null +++ b/src/prng.c @@ -0,0 +1,47 @@ +/** + * liburtc + * Copyright 2020 Chris Hiszpanski + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +#include <stdint.h> +#include <stdlib.h> +#include <time.h> + +#include "prng.h" + +/** + * Initialize pseudo-random number generator + */ +void prng_init() { + srand(time(NULL)); +} + +/** + * Fill specified memory with pseudo-random data + * + * \param dst Destination memory + * \param sz Size (in bytes) of destination memory + */ +void prng(void *dst, size_t sz) { + for (; sz; sz--) { + *(uint8_t *)dst++ = rand() & 0xFF; + } +} |