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Re:Mathematics for Computer Science - Lecture Notes by raju on Thursday July 15, 2010 @02:24PM (#1518633)
Is the book you were referring to "The Code Book: The Science of Secrecy from Ancient Egypt to Quantum Cryptography" by Simon Singh?

Amazon link - http://amzn.to/dlNAeO

It's on my reading shelf right now, but I have not gotten around to reading it. I think your comment just might make that happen. Thanks for the recommendation

Re:Mathematics for Computer Science - Lecture Notes by oscardelben on Thursday July 15, 2010 @02:42PM (#1518695)
I've read that book although I admit I did not take the final challenges. Still I found that to be a very interesting book, very well written where you can actually learn something useful.