public static String hmacSHA512(String data, String key) {
        return hmacSHA512(data.getBytes(), key.getBytes());
    }
@Test
    public void testHmacSHA512() throws Exception {
        Assert.assertEquals(
                biezhiHmacSHA512,
                EncryptKit.hmacSHA512("biezhi", biezhiHmackey)
        );
        Assert.assertEquals(
                biezhiHmacSHA512,
                EncryptKit.hmacSHA512("biezhi".getBytes(), biezhiHmackey.getBytes())
        );
        TestCase.assertTrue(
                Arrays.equals(
                        ConvertKit.hexString2Bytes(biezhiHmacSHA512),
                        EncryptKit.hmacSHA512ToByte("biezhi".getBytes(), biezhiHmackey.getBytes())
                )
        );
    }