def test_fromNewerOpenSSH(self):
        """
        Newer versions of OpenSSH generate encrypted keys which have a longer
        IV than the older versions.  These newer keys are also loaded.
        """
        key = keys.Key.fromString(keydata.privateRSA_openssh_encrypted_aes,
                                  passphrase=b'testxp')
        self.assertEqual(key.type(), 'RSA')
        key2 = keys.Key.fromString(
            keydata.privateRSA_openssh_encrypted_aes + b'\n',
            passphrase=b'testxp')
        self.assertEqual(key, key2)

        Newer versions of OpenSSH generate encrypted keys which have a longer
        IV than the older versions.  These newer keys are also loaded.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/conch/test/test_keys.py