将很大的数字存储在C中的整数中 [英] Store very big numbers in an integer in C

问题描述

我需要在C程序中以整数形式存储一个非常大的数字， unsigned long int 仍然太小，我需要一个非常大的数据类型，该类型仍然可以与模运算符一起使用(％).

I need to store a very large number as an integer in a C program, unsigned long int is still too small, I need a very large data type that will still work with the modulo operator (%).

推荐答案

有几个库可以做到这一点

There are several libraries that can do this

• GMP
• OpenSSL的BN

如果您出于加密目的需要它(例如，模数算法的需求提示了RSA)，则OpenSSL BN非常适合

If you need it for cryptographic purposes (e.g. RSA as hinted by your need of modulo arithmetic), OpenSSL BN is ideally suited

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