RC4和RSA的加密解密类，经过封装，调用简单，包含文档说明、源码、编译成lib的方案-Encrypt and Decrypt with RC4 and RSA, easy to use, include doc, source code, and lib project

可使用RSA加密算法对明文进行加密和解密(RSA encryption algorithm can be used to encrypt and decrypt plaintext.)