RC4算法是一种在电子信息领域加密的技术手段，用于无线通信网络，是一种电子密码，只有经过授权（缴纳相应费用）的用户才能享受该服务。-RC4 algorithm is a field of electronic information encryption techniques for wireless communication networks, is an electronic password that only authorized (to pay the appropriate fee

rc4 implementation in c++ was created two and a half years ago for class assignment. I got an A, so will you

实现RC4加密加密程序，程序中分别提供加密解密函数。-Implement RC4 encryption encryption program