The University of Arizona
Department of Mathematics
SWRIMS High School Workshops

Interesting Webpages related to Cryptography

Go to any web search engine (Yahoo, Alta Vista, etc.) and search for "Enigma Machine", "Cryptography", "Cipher", "Public Key", "Digital Signature", "National Security Agency", "Bletchley Park", or, if you're not interested in cryptography and just want to have fun, try "Bart Simpson". Below is a small sampling of some webpages worth visiting.

Enigma Machine:

• http://www.math.arizona.edu/~dsl/enigma.htm
  Has photos, our UofA Enigma software, links to related sites.
• http://www.math.arizona.edu/~dsl/talk.htm
  Brief crypto talk, brief history of Enigma, picture of rotor patent, picture of Bombe.
• http://members.aol.com/nbrass/biblio.htm
  Huge list of Enigma resources.
• http://www.cs.uoregon/edu/~inoble/enigma/text
  Very nice Enigma simulator; be sure to "trace rotors".
• http://www.attlabs.att.co.uk/andyc/enigma/enigma_j.html
  Another Enigma simulator.
• http://russells.freeshell.org/enigma/
  And another Enigma simulator.

Breaking the Enigma code:

• http://www.geocities.com/CapeCanaveral/Hangar/4040/bombe.html
  Description of Turing Bombe and Java applet that simulates it.
• http://www.cranfield.ac.uk/ccc/bpark
  Bletchley Park (in Britain), where the Enigma code was broken.

Other mechanical rotor-wheel systems:

• http://www.maritime.org/ecm2.shtml
  Description of ECM Mark II, an Enigma-like system used by the allied powers in WWII.
• http://www3.sympatico.ca/hrc/haida/radiorm.htm
  Radio room of ship; click on "encode" and "decode" to learn about Enigma-like system developed by US National Security Agency and in use during the 1980s, retired in early 1990s.

Substitution Ciphers:

• http://www.math.arizona.edu/~dsl/wnew.htm
  Download Cryptaid software for DOS.
• http://raphael.math.uic.edu/~jeremy/crypt/cgi-bin/magic-gateway.cgi
  Online substitution cipher game.

Public-Key Cryptography and Digital Signatures:

• http://home.netscape.com/assist/security/ssl/hoitworks.html
  Describes how Netscape uses RSA.

Other:

• http://www.c4support.bss.org/stuck/cybersecrecy/cyber000.html
  Well-written introduction to cryptography with summaries of recent developments.

http://www.math.arizona.edu/~rims/workshops/cryptography/cryptolinks.html
Webpage maintained by: Alexander Perlis, aprl@math.arizona.edu