本代码实现基于RSA算法的文本加密解密功能，在C＋＋环境下运行-the code-based version of the RSA encryption and decryption functions in C + + environment Operation

rsa 实现代码 简单易理解，有界面，可正确运行，但不支持大数-rsa implementation code simple and easy to understand, there are interfaces, can be correctly, but does not support large numbers