可以实现对文件的加密和解密处理，并且能够根据需要自动创建公钥，导入导出公钥以及获取私钥，可以用于保护重要的文件。(Encryption and decryption can be achieved, and can automatically create the public key as needed, import and export public key, and obtain the private key, which can be used to protect importan