Cryptonomicon

WWII, year 1943. The allies have already cracked all the Nazi codes. They know where the military convoys are going and where enemy submarines are hiding. But if British destroyers will start finding and sinking Nazi submarines every time without any problems, Germans will figure out that their codes have been broken and will change them. That's why it's necessary to fool the enemy. For that reason, the special British-American secret unit 2702 was created...

"The Bible" of cyberpunk (or cypherpunk? :) about the creation of the computer world. There is everything in it: love, war, betrayal, treasures on the bottom of the sea, and even exile from Eden...