这是一个实际的项目衍生出来的核心算法之一。防伪码是我们现在经常在商品上看到的防伪手段之一，现在需要编写一个防伪码生成器，按照输入参数生成防伪码，并且把生成的时间及指定的防伪码输出。(This is one of the core algorithm of a project is derived. The security code is one of the means of security we now often see on the goods, now need to write a