public static PrivateKey readPemPrivateKey(InputStream pemStream) {
		return (PrivateKey) readPemKey(pemStream);
	}
@Test
	public void readPrivateKeyTest() {
		final PrivateKey privateKey = PemUtil.readPemPrivateKey(ResourceUtil.getStream("test_private_key.pem"));
		assertNotNull(privateKey);
	}