gistfile1.cs

private static void EncryptFile(string inputFile, string outputFile)
        {
            int num;
            string s = "h3y_gUyZ";
            byte[] bytes = new UnicodeEncoding().GetBytes(s);
            string path = outputFile;
            FileStream stream = new FileStream(path, FileMode.Create);
            RijndaelManaged managed = new RijndaelManaged();
            CryptoStream stream2 = new CryptoStream(stream, managed.CreateEncryptor(bytes, bytes), CryptoStreamMode.Write);
            FileStream stream3 = new FileStream(inputFile, FileMode.Open);
            while ((num = stream3.ReadByte()) != -1)
            {
                stream2.WriteByte((byte) num);
            }
            stream3.Close();
            stream2.Close();
            stream.Close();
        }