Findings:

• Simon Singh's Code Book Cipher Challenge Cracked
• John F. Kennedy School of Government
• Governor's School for Government and International Studies
• cipher
• cipher text
• substitution cipher
• monoalphabetic substitution cipher
• Caesar shift cipher
• simple substitution cipher
• homophonic substitution cipher
• polyalphabetic substitution cipher
• transposition cipher
• cipher alphabet
• asymmetric cipher
• symmetric cipher
• mechanical cipher system
• hybrid cryptosystem
• Pigpen Cipher
• Hash Cipher
• The Beale ciphers
• Caesar's Cipher
• atbash cipher
• Soviet Espionage Cipher
• Playfair Cipher
• M209 Cipher Machine
• Stream Cipher
• synchronous stream cipher
• Additive Stream Ciphers
• self-synchronizing stream cipher
• Turning grill transposition cipher
• ERIKO-CHAN cipher
• cipher (user)
• Block cipher
• null cipher
• block cipher cryptanalysis
• Bacon Cipher
• Keyword substitution cipher
• Ideal cipher model
• running key cipher
• Hill cipher
• Permutation cipher
• random key substitution cipher
• Nihilist cipher
• ADFGVX cipher
• bifid cipher
• VIC cipher
• rail fence cipher
• Dorabella Cipher
• source code
• But who codes the coders?
• code
• geek code
• Code Warrior
• object code
• Discordian Code
• Bible Code
• spaghetti code
• dress code
• kernel code
• Code Monkey
• code name
• area code
• country code
• city code
• code segment
• Nuclear launch codes
• hack code
• machine code
• 50 U.S.C. § 1520
• Morse code
• running code
• Gray code
• Universal Product Code
• cutting code
• code disablement
• the Uniform Code Council
• hard code
• Archived E2 FAQ: Source Code (document)
• the beautiful girl herself writes poems in code (document)
• Code janitor
• Windows source code
• The hidden evil in UPC barcodes
• Airport code
• Zip Code
• Postal Code
• Zip+4 Code
• Everything Source Code
• The Code Book
• Justinian Code
• Amusing comments in source code
• civil code
• Hays Code
• resistor color code
• tolerance band code
• Federal Income Tax Code
• firewall code
• HTTP Status Code Definitions
• Uniform Code of Military Justice
• What I hate about working on code with others
• Code of Hammurabi
• Code Class
• unbreakable code
• Honor code
• code generation
• Cross Interleave Reed-Solomon Code
• Universal Genetic Code
• Secret fortress building codes
• ModernAngel's VBA/DAO Code Disclaimer
• reveal codes
• exit code
• Sexual reproduction of computer code
• Code Blue
• Code commander
• airline codes
• Konami Code
• Here's what I hope to do with the Everything code or with something like it
• Code of the Geeks
• code grinder
• code police
• codes
• dead code
• death code
• Joe code
• kangaroo code
• native code
• write-only code
• Emacs Code to Nodify The Tech's Shakespeare Texts
• cheat code
• unreadable code
• The Code
• Code, and Other Laws of Cyberspace
• Code Poet
• unreachable code
• Code Shelby
• control codes
• Casual dress code
• evolutionary code
• Contra Code
• Code of Canon Law
• Parity Code
• monkey code
• Code of Laws
• When good code goes bad
• lines of code
• Macintosh Error Codes
• Stupidest thing you've coded just to see if you could
• California Health and Safety Code Section 11357
• Computer wire color code
• Pager Codes
• Military Alphabet Code
• code rage
• TTC PA Codes
• Gentleman's Code
• mixing IC and OOC up in the code of computer-based RPG

If you Log in you could create a "Government Code and Cipher School" node. If you don't already have an account, you can register here.