public async Task <IActionResult> cifrarDescifrar([FromForm] IFormFile file, [FromForm] IFormFile key, string nombre)
        {
            Cifrado cifDes = new Cifrado();
            string  path   = @".\temporales\";

            string[] separado    = (key.FileName).Split('.');
            string   terminacion = separado[0];

            try
            {
                using (var filestream = new FileStream((path + file.FileName), FileMode.Create))
                {
                    await file.CopyToAsync(filestream);

                    filestream.Close();
                }

                using (var filestream2 = new FileStream((path + key.FileName), FileMode.Create))
                {
                    await key.CopyToAsync(filestream2);

                    filestream2.Close();
                }

                string     pathFile = path + file.FileName;
                FileStream fileS    = new FileStream(pathFile, FileMode.Open, FileAccess.Read);
                string     linea    = System.IO.File.ReadAllText(path + key.FileName, System.Text.Encoding.Default);

                if (terminacion == "public")
                {
                    FileStream  nuevo = new FileStream(@".\" + nombre + ".txt", FileMode.Create, FileAccess.ReadWrite);
                    string[]    data  = linea.Split(',');
                    int         n     = Convert.ToInt32(data[0]);
                    int         e     = Convert.ToInt32(data[1]);
                    List <byte> bytes = cifDes.cifrar(fileS, n, e);
                    nuevo.Write(bytes.ToArray());
                    nuevo.Close();
                    System.IO.File.Delete(path + file.FileName);
                    System.IO.File.Delete(path + key.FileName);
                }
                else if (terminacion == "private")
                {
                    FileStream  nuevo = new FileStream(@".\" + nombre + ".txt", FileMode.Create, FileAccess.ReadWrite);
                    string[]    data  = linea.Split(',');
                    int         n     = Convert.ToInt32(data[0]);
                    int         d     = Convert.ToInt32(data[1]);
                    List <byte> bytes = cifDes.descifrar(fileS, n, d);
                    nuevo.Write(bytes.ToArray());
                    nuevo.Close();
                    System.IO.File.Delete(path + file.FileName);
                    System.IO.File.Delete(path + key.FileName);
                }
                return(StatusCode(200));
            }
            catch
            {
                return(StatusCode(500));
            }
        }