The vulnerability of Japanese naval codes and ciphers was crucial to the conduct of World War II, and had an important influence on foreign relations between Japan and the west in the years leading up to the war as well. Every Japanese code was eventually broken, and the intelligence gathered made possible such operations as the victorious American ambush of the Japanese Navy at Midway and the shooting down of Isoroku Yamamoto in Operation Vengeance.
The Imperial Japanese Navy (IJN) used many codes and ciphers. All of these cryptosystems were known differently by different organizations; the names listed below are those given by Western cryptanalytic operations.
Read more about Japanese Naval Codes: Red Code, Blue Code, JN-11, JN-25, JN-39, JN-40, JN-152, JN-167, 1942 Chicago Tribune Incident
Famous quotes containing the words japanese, naval and/or codes:
“The Japanese do not fear God. They only fear bombs.”
—Jerome Cady, U.S. screenwriter. Lewis Milestone. Yin Chu Ling, The Purple Heart (1944)
“It is now time to stop and to ask ourselves the question which my last commanding officer, Admiral Hyman Rickover, asked me and every other young naval officer who serves or has served in an atomic submarine. For our Nation M for all of us M that question is, “Why not the best?””
—Jimmy Carter (James Earl Carter, Jr.)
“We must trust infinitely to the beneficent necessity which shines through all laws. Human nature expresses itself in them as characteristically as in statues, or songs, or railroads, and an abstract of the codes of nations would be an abstract of the common conscience.”
—Ralph Waldo Emerson (1803–1882)