However, there are a couple of *obvious* errors. My supposition is that he "pulled his punches" a little, choosing to gloss over certain things which would have made the "terrorist" essentially impossible to detect. (The most glaring error, which he surely knew better about, was to assert that NSA could break any cipher if given enough time and computer power.)
I surmise from how he altered factual details about the world of cryptography--though masterfully--that he also subtly tweaked some details in other areas. I, for example, don't plan to use the cyclotrimethylene trinitramine version of C4, allegedly free of the usual odor-producing impurities, for any of my sanitization efforts! (He also describes some of the flaws in the bombs used in the World Trade Center and Oklahoma City bombings...any aspiring terrorist should certainly read this novel for some ideas...taking into account the deliberate errors he inserted, as with the crypto errors!)
A real explosives expert would see in his detailed descriptions of where and how to get the M6 Special Engineer Electrical Blasting Caps and the M-112 Charge Demolition Blocks the same kind of subtle tweakings of the truth that he put into his convincing descriptions of cryptanalysis.
Any intelligent terrorist knows that explosives are old hat. Perhaps this is an opportunity for CPs to join in and re-write the book with a more factual basis and outcome, are re-publish on-line. I volunteer to OCR. -Steve