ossl_rand_pool_buffer
|| meth->add(ossl_rand_pool_buffer(pool),
const unsigned char *ossl_rand_pool_buffer(RAND_POOL *pool);
memcpy(out, ossl_rand_pool_buffer(pool), ossl_rand_pool_length(pool));
memcpy(out, ossl_rand_pool_buffer(pool), ossl_rand_pool_length(pool));