(self)
Self renew cipher_core after encryption and decryption
        :return:
Self renew cipher_core after encryption and decryption
        :return:
Self renew cipher_core after encryption and decryption : return :
def _renew(self):
        """
        Self renew cipher_core after encryption and decryption
        :return:
        """
        self.cipher_core = AESModeOfOperationOFB(key=self.key, iv=self.nonce)
def _renew ( self ) : self . cipher_core = AESModeOfOperationOFB ( key = self . key , iv = self . nonce )