1.`fine-bcprov-old`是为了与`fine-bouncycastle`区别开，<br>
2.`fine-itext`与`fine-itext-old`都依赖`fine-bcprov-old`与`fine-bouncycastle`，两个库的内容归属于不同的版本所以暂时无法合并，<br>
3.源码地址https://cloud.finedevelop.com/projects/PF/repos/thirdtools/browse