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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2023 Red Hat
*/
#include <linux/random.h>
#include <linux/types.h>
#include "random.h"
void get_random_bytes(void *buffer, size_t byte_count)
{
uint64_t rand_num = 0;
uint64_t rand_mask = 0;
const uint64_t multiplier = (uint64_t) RAND_MAX + 1;
u8 *data = buffer;
size_t i;
for (i = 0; i < byte_count; i++) {
if (rand_mask < 0xff) {
rand_num = rand_num * multiplier + random();
rand_mask = rand_mask * multiplier + RAND_MAX;
}
data[i] = rand_num & 0xff;
rand_num >>= 8;
rand_mask >>= 8;
}
}
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