ossl_rand_pool_new
pool = ossl_rand_pool_new(entropy, 1, min_len, max_len);
pool = ossl_rand_pool_new(0, 0, min_len, max_len);
RAND_POOL *pool = ossl_rand_pool_new(RAND_DRBG_STRENGTH, 1,
RAND_POOL *ossl_rand_pool_new(int entropy_requested, int secure,
pool = ossl_rand_pool_new(strength, 1, outlen, outlen);
pool = ossl_rand_pool_new(entropy, 1, min_len, max_len);
pool = ossl_rand_pool_new(strength, 1, outlen, outlen);
pool = ossl_rand_pool_new(entropy, 1, min_len, max_len);