RAND_DRBG_STRENGTH
RAND_POOL *pool = ossl_rand_pool_new(RAND_DRBG_STRENGTH, 1,
(RAND_DRBG_STRENGTH + 7) / 8,
bytes = RAND_DRBG_STRENGTH;
#define RAND_LOAD_BUF_SIZE (RAND_BUF_SIZE + RAND_DRBG_STRENGTH)
#define RAND_POOL_MAX_LENGTH (RAND_POOL_FACTOR * 3 * (RAND_DRBG_STRENGTH / 16))