EC_KEY_set_private_key
if (EC_KEY_set_private_key(ec, exponent) != 1) {
&& !EC_KEY_set_private_key(ec, priv_key))
OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *prv);
if (!TEST_int_eq(EC_KEY_set_private_key(key, aux_key->priv_key), 1))
if (!TEST_int_eq(EC_KEY_set_private_key(key, NULL), 0)
if (!TEST_true(EC_KEY_set_private_key(eckey, priv)))
if (!TEST_true(EC_KEY_set_private_key(eckey, priv)))
|| !TEST_true(EC_KEY_set_private_key(key, priv)))
|| !TEST_true(EC_KEY_set_private_key(key, priv)))