> Certainly, it's solvable for the one-time-pad-like scenario we used, but what about for more general cases that permit key reuse? Can't you force this simply

> Certainly, it's solvable for the one-time-pad-like scenario we used, but what about for more general cases that permit key reuse? Can't you force this simply by making the message a lot longer than the key? If the network can encrypt variable length messages, surely the method must be more advanced than a one time pad.