Portions of Cryptonomicon are notably complex and may be considered somewhat difficult by the non-technical reader. Several pages are spent explaining in detail some of the concepts behind cryptography and data storage security, including a description of Van Eck phreaking.
Stephenson also includes a precise description of (and even Perl script for) the Solitaire (or Pontifex) cipher, a cryptographic algorithm developed by Bruce Schneier for use with a deck of playing cards, as part of the plot.
He also describes computers using a fictional operating system, Finux. The name is a thinly veiled reference to Linux, a kernel originally written by the Finnish native Linus Torvalds. Stephenson changed the name so as not to be creatively constrained by the technical details of Linux-based operating systems.
- Technology featured in the Cryptonomicon
- Carbon arc lamp
- The Dun improved Galvanic Element
- Mercury acoustic delay line computer memory