HISTORY TODAY 11 DECEMBER 2015

Daily Enterprise - (U) HISTORY TODAY - 11 December 2015 Page 1 of 3Doc ID: 6660625UNCLASSIFIED(U) HISTORY TODAY - 11 December 2015FROM: CCHRun Date(s): 12/11/2015(U) PURPLE and MAGIC — World War ll(U) Earlier this month, History Today published articles about the pre-World War IIsuccess by the U.S. military in exploiting Japanese diplomatic communications. TheJapanese Foreign Ministry used a machine-generated cipher, which the Americans called“PURPLE.” This was solved in 1940, and exploited by b...