It happens that Bob is trying to tell Alice the three-digit passcode to his garage so she can borrow his bike pump. Mallory, an evil eavesdropping neighbor, wants to know the passcode as well. She knows that Bob will send only the three-digit passcode (that is, his message will look like ``$577$'', ``$628$'', or something else similar). Assuming Alice and Bob are using textbook RSA, and assuming Mallory can read all communications between Alice and Bob, how can Mallory determine Bob's passcode? g