The Purple Cipher Machine was the most complex of the Japanese cipher systems of WWII. Because Japan and Germany were sharing pertinent military information it was critical for the U.S. to crack Purple’s code. The purpose of this research paper is to give the history of the Purple cipher machine, how it works, and the impact it had on World War II. The name Purple was given to the machine by American cryptanalysists. …showed first 75 words of 2261 total…

…showed last 75 words of 2261 total…their advantage, the world we live in today might have been completely different. ------------------------------------------------------------------------ **Bibliography** Boyd, Carol. Hitler's Japanese Confidant. Kansas: University Press of Kansas, 1993. Kahn, David. Kahn on Codes. Secrets of the New Cryptology. New York: Macmillan Publishing, 1983. Melton, Keith H. The Ultimate Spy Book. New York: DK Publishing, Inc., 1996. Russell, Francis. The Secret War: World War II. Canada: Time-Life Books Inc., 1981. www.gusu.edu/mathstat/enigma/purple/welcome.htm www.codesandciphers.org.uk