pub unsafe extern "C" fn sgx_ecc256_calculate_pub_from_priv(
p_att_priv_key: *const Ec256PrivateKey,
p_att_pub_key: *mut Ec256PublicKey
) -> SgxStatus
pub unsafe extern "C" fn sgx_ecc256_calculate_pub_from_priv(
p_att_priv_key: *const Ec256PrivateKey,
p_att_pub_key: *mut Ec256PublicKey
) -> SgxStatus