def ciphertext(self, be_secure=True):
        """return the ciphertext of the PaillierEncryptedNumber.
        """
        if be_secure and not self.__is_obfuscator:
            self.apply_obfuscator()

        return self.__ciphertext
return the ciphertext of the PaillierEncryptedNumber.
        
fedlearner/model/crypto/paillier.py