code: def decrypt(self, key):
          
  
          if 'ciphertext' not in self.objects:
              raise InvalidJWEOperation("No available ciphertext")
          self.decryptlog = list()
  
          if 'recipients' in self.objects:
              for rec in self.objects['recipients']:
                  try:
                      self._decrypt(key, rec)
                  except Exception as e:  # pylint: disable=broad-except
                      self.decryptlog.append('Failed: [%s]' % repr(e))
          else:
              try:
                  self._decrypt(key, self.objects)
              except Exception as e:  # pylint: disable=broad-except
                  self.decryptlog.append('Failed: [%s]' % repr(e))
  
          if not self.plaintext:
              raise InvalidJWEData('No recipient matched the provided '
                                   'key' + repr(self.decryptlog))
docs: Decrypt a JWE token.
  
          :param key: The (:class:`jwcrypto.jwk.JWK`) decryption key.
          :param key: A (:class:`jwcrypto.jwk.JWK`) decryption key or a password
           string (optional).
  
          :raises InvalidJWEOperation: if the key is not a JWK object.
          :raises InvalidJWEData: if the ciphertext can't be decrypted or
           the object is otherwise malformed.