2.12 due on November 23

1. I had some difficulty understand the attack. The first part was the daily settings and how that was transmitted. It sounded like it was in a book, so why must that be transmitted? Then I didn't understand at all how the permutation cycles were used to show what letters were mapped to other letters.
2. I found it interesting that the British had been breaking the Enigma throughout World War II. I guess really all I have about the Enigma is from U-571. The movie made it seem like it it was much later in the war that the Enigma was broken, but the book said the British new how to two months before Germany invaded Poland. That was the onset of World War II.