How to use the andriller.decrypts function in andriller

try:
            self.controls_state(tk.DISABLED)
            for i in sel:
                file_ = self.crypts[i]
                fname = os.path.basename(file_)
                file_ext = file_.split('.')[-1].lower()
                decrypter = self.supported.get(file_ext)
                if decrypter:
                    try:
                        wadec = decrypter(file_, self.key_file)
                        if wadec.decrypt():
                            vals = self.file_box.item(i)['values']
                            vals[1] = True
                            self.file_box.item(i, values=vals, tags='success')
                            logger.info(f'WhatsAppCrypt: {fname} successfully decrypted.')
                    except decrypts.WhatsAppCryptError as err:
                        logger.error(f'WhatsAppCrypt: {err}')
                        self.file_box.item(i, tags='failure')
                        messagebox.showerror('WhatsApp decryption error', str(err))
                    except Exception as err:
                        logger.error(f'WhatsAppCrypt: {fname}: {err}')
                        self.file_box.item(i, tags='failure')
        finally:
            self.file_box.selection_set()
            self.controls_state(tk.NORMAL)

drill = driller.ChainExecution(
                        output_dir,
                        src_dir=src_dir,
                        status_msg=self.StatusMsg,
                        logger=logger)
                    drill.CreateWorkDir()
                    drill.ExtractFromDir()
                    drill.DataDecoding()
                    drill.GenerateHtmlReport()
                    drill.GenerateXlsxReport()
                    drill.CleanUp()


# WhatsApp Crypt --------------------------------------------------------------
class WhatsAppCrypt(BaseWindow):
    KEY_SIZE = decrypts.WhatsAppCrypt.KEY_SIZE
    SUFFIX = decrypts.WhatsAppCrypt.SUFFIX

    def __init__(self, root=None, title='WhatsApp Crypt Decryptor'):
        super().__init__(root=root, title=title)
        self.guide = statics.WHATSAPP_CRYPT
        self.work_dir = None
        self.crypts = {}
        self.key_file = None
        self.supported = self.get_supported()
        self._info = tk.StringVar()
        self._info_but = tk.StringVar()
        self._info_but.set('Show Info')

        ttk.Label(self.mainframe, text=title, font=self.FontTitle).grid(row=1, column=0, columnspan=2)
        tk.Button(self.mainframe, textvariable=self._info_but, relief='flat', command=self.info_toggle)\
            .grid(row=1, column=2, columnspan=1, sticky=tk.E)

def get_supported(self):
        return {kls.CRYPT: kls for kls in decrypts.WhatsAppCrypt.__subclasses__()}