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random: use void * in random_bytes()

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This commit is contained in:
Benjamin Valentin 2022-07-26 19:46:14 +02:00
parent 23d8e9c085
commit 1e69740d18
2 changed files with 4 additions and 3 deletions
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2
sys/include/random.h
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@ -82,7 +82,7 @@ uint32_t random_uint32(void);
/** /**
* @brief writes random bytes in the [0,0xff]-interval to memory * @brief writes random bytes in the [0,0xff]-interval to memory
*/ */
void random_bytes(uint8_t *buf, size_t size); void random_bytes(void *buf, size_t size);
/** /**
* @brief generates a random number r with a <= r < b. * @brief generates a random number r with a <= r < b.

5
sys/random/random.c
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@ -60,9 +60,10 @@ void auto_init_random(void)
random_init(seed); random_init(seed);
} }
void random_bytes(uint8_t *target, size_t n) void random_bytes(void *target, size_t n)
{ {
uint32_t random; uint32_t random;
uint8_t *dst = target;
uint8_t *random_pos = (uint8_t*)&random; uint8_t *random_pos = (uint8_t*)&random;
unsigned _n = 0; unsigned _n = 0;
@ -71,7 +72,7 @@ void random_bytes(uint8_t *target, size_t n)
random = random_uint32(); random = random_uint32();
random_pos = (uint8_t *) &random; random_pos = (uint8_t *) &random;
} }
*target++ = *random_pos++; *dst++ = *random_pos++;
} }
} }