public static String SHA256(String data) {
        return SHA256(data.getBytes());
    }
@Test
    public void testSHA256() throws Exception {
        String biezhiSHA256 = "8fcbefd5c7a6c81165f587e46bffd821214a6fc1bc3842309f3aef6938e627a7";
        Assert.assertEquals(
                biezhiSHA256,
                EncryptKit.SHA256("biezhi")
        );
        Assert.assertEquals(
                biezhiSHA256,
                EncryptKit.SHA256("biezhi".getBytes())
        );
        TestCase.assertTrue(
                Arrays.equals(
                        ConvertKit.hexString2Bytes(biezhiSHA256),
                        EncryptKit.SHA256ToByte("biezhi".getBytes())
                )
        );
    }