There are still methods that are unbroken. Onetime pad: messages are encrypted using an key that has the same length as the message An enigmalike machine: the

There are still methods that are unbroken. Onetime pad: messages are encrypted using an key that has the same length as the message An enigmalike machine: the enigma has some problems, but that can easily be fixed. If someone uses more complicated keys than AAA they should be safe from reading the messages.