This book made me yell more than once. Dan, my dear, crypto doesn't work that way. Really. Not. And I'm very much annoyed, because I still wanted to know what happens, because suspense, you can write. But it wouldn't have been that much harder for your book to be readable by people who have some basic (really, basic) notions of crypto. Very annoying. And all of this to yell the answer to the final enigma 15 pages before the people who are supposed to be living gods actually find it. The book's premise is that NSA can decrypt everything they can intercept, except that some guy claims that he found an unbreakable algorithm. Problem is, the technical elements of the story are so bad that the whole thing breaks down. Kind of a waste, because otherwise it would probably be quite a nice thriller. Grmbl.