@Test
public void testLoadPrivateKeyPem() throws IOException {

    Path path = Paths.get("./src/test/resources/unit_test_private_encrypted.key");
    String keyStr = new String(Files.readAllBytes(path));
    assertThrows(CryptoException.class, () -> {
        Crypto.loadPrivateKey(keyStr, "testPWD");
    });
}