Onion AV Club: Neal Stephenson - Interview outlining the background and inspiration for Cryptonomicon. www.theavclub.com/avclub3520/avfeature3520.html
Pontifex - A cgi implementation of the Solitare algorithm used in the book. www.carumba.org/hacks/pontifex/pontifex.cgi
Problems with Bruce Schneier's Solitaire - Describes some problems with the playing card encryption algorithm, includes an implementation in C. www.ciphergoth.org/crypto/solitaire
The Solitaire Encryption Algorithm - Explanation and source code for the crypto system used in Cryptonomicon. www.counterpane.com/solitaire.html
