def dec(self, x):
        """ Decrypt a ciphertext using a secret key """
        try:
            hm = x * self.a - self.b
            return _table[hm]
        except Exception as e:
            o = self.pub.group.order()
            self.self_check()
            print("Failed to decrypt: %s" % self.m )
            raise e
dataset/ETHPy150Open gdanezis/petlib/examples/tormedian.py/Ct.dec/swapped operands of `-`