Doyle, A. C. The
Complete Sherlock Holmes. New York, NY: Doubleday,
1953.
Poe, E. A. Tales of Edgar
Allan Poe. York, PA: Random House. 1944.
Sinkov, A. Elementary
Cryptanalysis. Washington, DC: Mathematical
Association of America, 1968.
Games. Ambler,
PA: Games Publications, Inc. |
|
Letter
Frequencies
www.vindustries.com/letterfreq/
Enigma Machine - Applet
russells.freeshell.org/enigma/
Enigma Machine - History
www.nsa.gov/museum/museu00007.cfm
Enigma Puzzle
wordzap.com/enigma
Breaking Codes
www.teachingtools.com/GoFigure/Password.htm |