C++源码实现RC4的文件加密、解密功能，本程序可在VC++ 6.0环境下直接编译成功。在窗体中选择需要加密的文件，随便输入你自己想要的加密密钥，点击“文件加密”功能，即可快速实现基于RC4算法的文件加密程序。保存的文件后缀为RC4，如果选择打开的是RC4文件，则程序自动加载解密模块，输入密钥可解密文件。-C++ source file encryption RC4 decryption function, the success of the program can be compiled directly in the VC++ 6.0 environment. Select the desired file in an encrypted form, just enter the encryption key you want, click "File Encryption" feature, you can quickly achieve RC4 algorithm based file encryption program. Save the file suffix RC4, RC4 if you choose to open the file, the program automatically loads the decryption module, enter the key can decrypt the file.