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sys/random/fortuna/fortuna.c:add error check of aes_encrypt()

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This commit is contained in:
Han Xinrong 2020-12-08 11:14:15 +08:00 committed by Teufelchen1
parent 7c8c522a73
commit bf3c038fa9
1 changed files with 5 additions and 1 deletions
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6
sys/random/fortuna/fortuna.c
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@ -53,6 +53,7 @@ static void fortuna_reseed(fortuna_state_t *state, const uint8_t *seed,
/*
* Corresponds to section 9.4.3.
* Returns 0 on success; A negative value otherwise
*/
static int fortuna_generate_blocks(fortuna_state_t *state, uint8_t *out,
size_t blocks)
@ -75,7 +76,10 @@ static int fortuna_generate_blocks(fortuna_state_t *state, uint8_t *out,
}
for (size_t i = 0; i < blocks; i++) {
aes_encrypt(&cipher, state->gen.counter.bytes, out + (i * 16));
res = aes_encrypt(&cipher, state->gen.counter.bytes, out + (i * 16));
if (res != 1) {
return -3;
}
fortuna_increment_counter(state);
}