uint8_t SYS_RANDOM_CryptoByteGet( void )
{
uint8_t rNo;
CRYPT_RNG_Get(&sysRandCtx, (unsigned char*)&rNo);
return rNo;
// TODO: set error status/return error if failed
}
/* check mcapi rng */
static int check_rng(void)
{
int ret;
int i;
byte in[RANDOM_BYTE_SZ];
byte out[RANDOM_BYTE_SZ];
for (i = 0; i < RANDOM_BYTE_SZ; i++)
in[i] = (byte)i;
for (i = 0; i < RANDOM_BYTE_SZ; i++)
out[i] = (byte)i;
ret = InitRng(&defRng);
if (ret != 0) {
printf("default rng init failed\n");
return -1;
}
ret = CRYPT_RNG_Initialize(&mcRng);
if (ret != 0) {
printf("mcapi rng init failed\n");
return -1;
}
ret = CRYPT_RNG_Get(&mcRng, &out[0]);
if (ret != 0) {
printf("mcapi rng get failed\n");
return -1;
}
ret = CRYPT_RNG_BlockGenerate(&mcRng, out, RANDOM_BYTE_SZ);
if (ret != 0) {
printf("mcapi rng block gen failed\n");
return -1;
}
if (memcmp(in, out, RANDOM_BYTE_SZ) == 0) {
printf("mcapi rng block gen output failed\n");
return -1;
}
printf("rng mcapi test passed\n");
return 0;
}
