NTL is a high-performance, portable C++ library providing data structures and algorithms for manipulating signed, arbitrary length integers, and for vectors, matrices, and polynomials over the integers and over finite fields.

一个处理数论的函数库，但是安装时有点麻烦，看看里面的介绍吧

信息安全很多头文件，非常重要哦~~~这个很好用的~老师推荐-Many header files of information security is very important that a good oh ~ ~ ~ ~ teachers recommended by the