Re: Find it difficult to believe
GCHQ can brute force crack the code by running through every book in their digital library
Not every book is digitised, and different printings of books can vary enough to make them effectively unique as cipher pads. I do agree though that's it's more tricky than it used to be, but if Alice and Bob are sufficiently cryptic in how they define which page/paragraph/word/letter then they could defy purely automated analysis.
Biting the hand that feeds IT
