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sys/random: fix SHAxPRNG init_by_array

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This commit is contained in:
LP-HAW 2024-05-31 22:02:30 +02:00
parent c46d75d486
commit 9cf9638fdc
3 changed files with 4 additions and 4 deletions
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2
sys/include/random.h
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@ -78,7 +78,7 @@ void random_init(uint32_t s);
* slight change for C++, 2004/2/26 * slight change for C++, 2004/2/26
* *
* @param init_key array of keys (seeds) to initialize the PRNG * @param init_key array of keys (seeds) to initialize the PRNG
* @param key_length number of lements in init_key * @param key_length number of elements in init_key
*/ */
void random_init_by_array(uint32_t init_key[], int key_length); void random_init_by_array(uint32_t init_key[], int key_length);

4
sys/random/shaxprng.c
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@ -149,7 +149,7 @@ void _random_bytes(uint8_t *bytes, size_t size)
void random_init_by_array(uint32_t init_key[], int key_length) void random_init_by_array(uint32_t init_key[], int key_length)
{ {
_shax_init(&ctx); _shax_init(&ctx);
_shax_update(&ctx, init_key, key_length); _shax_update(&ctx, init_key, key_length * sizeof(uint32_t));
_shax_final(&ctx, digestdata); _shax_final(&ctx, digestdata);
/* copy SHA digestdata to PRNG state */ /* copy SHA digestdata to PRNG state */
@ -161,7 +161,7 @@ void random_init_by_array(uint32_t init_key[], int key_length)
void random_init(uint32_t seed) void random_init(uint32_t seed)
{ {
random_init_by_array((uint32_t *)&seed, sizeof(seed)); random_init_by_array((uint32_t *)&seed, 1);
} }
uint32_t random_uint32(void) uint32_t random_uint32(void)

2
tests/sys/prng_sha1prng/main.c
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@ -57,7 +57,7 @@ static void test_prng_sha1prng_java_u32(void)
/* seed the generator with 8 bytes similar to the java reference /* seed the generator with 8 bytes similar to the java reference
* implementation * implementation
*/ */
random_init_by_array(seed, sizeof(seed)); random_init_by_array(seed, ARRAY_SIZE(seed));
/* request random samples */ /* request random samples */
for (unsigned i = 0; i < ARRAY_SIZE(seq_seed1); i++) { for (unsigned i = 0; i < ARRAY_SIZE(seq_seed1); i++) {