Cryptonomicon
Cryptonomicon is a sprawling novel by Neal Stephenson that is more a combination of historical fiction and contemporary techno-thriller than the science fiction of Stephenson's earlier works. It follows the parallel saga of cryptographers from World War II (see U-413, U-553, U-691, Enigma, Alan Turing) and their descendants attempting to use modern cryptography to build a data haven in a fictitious East Asian island state and the political machinations that follow both efforts.Warning: Wikipedia contains spoilers.
Cryptonomicon is notably heavy going for non-technical readers in parts. Several pages are spent explaining in detail some of the concepts behind cryptography, for example. Stephenson even includes the details of a real, near-unbreakable cypher algorithm, developed by Bruce Schneier, as part of the plot. Despite this, the book drew praise from both Stephenson's science fiction fan base and literary critics and buyers.
The title is drawn indirectly from the Necronomicon, a fictional work detailed within the works of the writer H. P. Lovecraft, even though when Stephenson came up with his title, he was not aware of the word's origin. He was directly inspired by the fictional book's appearance in the Evil Dead series of comedic horror films.
