@Before
  public void setUpEncryptorAndDecryptor() {

    // the following keyring contains a primary key with KeyFlag "Certify" and a subkey for signing
    // and a subkey for encryption
    encryptor.setKeyFileName(PUB_KEY_RING_SUBKEYS_FILE_NAME);
    encryptor.setSignatureKeyFileName("org/apache/camel/component/crypto/secringSubKeys.gpg");
    encryptor.setSignaturePassword("Abcd1234");
    encryptor.setKeyUserid("keyflag");
    encryptor.setSignatureKeyUserid("keyflag");

    // the following keyring contains a primary key with KeyFlag "Certify" and a subkey for signing
    // and a subkey for encryption
    decryptor.setKeyFileName("org/apache/camel/component/crypto/secringSubKeys.gpg");
    decryptor.setSignatureKeyFileName(PUB_KEY_RING_SUBKEYS_FILE_NAME);
    decryptor.setPassword("Abcd1234");
    decryptor.setSignatureKeyUserid("keyflag");
  }
  @Test
  public void testExceptionForSignatureVerificationOptionRequired() throws Exception {

    encryptor.setSignatureKeyUserid(null); // no signature
    decryptor.setSignatureVerificationOption(PGPDataFormat.SIGNATURE_VERIFICATION_OPTION_REQUIRED);

    MockEndpoint mock = getMockEndpoint("mock:exception");
    mock.expectedMessageCount(1);
    template.sendBody("direct:subkey", "Test Message");
    assertMockEndpointsSatisfied();

    checkThrownException(
        mock,
        PGPException.class,
        null,
        "PGP message does not contain any signatures although a signature is expected");
  }