public String digestHex16(String data, Charset charset) {
		return DigestUtil.md5HexTo16(digestHex(data, charset));
	}
@Test
	public void md5To16Test() {
		String hex16 = new MD5().digestHex16("中国");
		assertEquals(16, hex16.length());
		assertEquals("cb143acd6c929826", hex16);
	}