public static String ClsDESCode(String hex){
	  DESUtils des=DESUtils.init();
	  String out="";
		try{
			byte[] dec = des.getDesCode(des.hex2byte(hex)); //
			out=new String(dec);
			int i = out.indexOf(0x00);
			if(i != -1){
				out=out.substring(0,i);
			}
		}
		catch(Exception e){
			e.printStackTrace();
			out=null;
		}
		return out;
	}