Editing JADE (cipher machine) (section)

{{Short description|Japanese World War II cipher machine}}
[[Image:Imperial Japanse navy Jade code machine 1.jpg|thumbnail|right|A captured JADE machine on display in the [[National Cryptologic Museum]].]]
[[File:JADE, Japanese Type-97 cipher machine captured in Saipan in June 1944 - National Cryptologic Museum - DSC07854.JPG|thumb|Keyboard of Jade machine]]

'''JADE''' was the [[codename]] given by US codebreakers to a Japanese [[World War II]] cipher machine. The [[Imperial Japanese Navy]] used the machine for communications from late 1942 until 1944. JADE was similar to another cipher machine, CORAL, with the main difference that JADE was used to encipher messages in [[katakana]] using an alphabet of 50 symbols.<ref name=NSAearlyjapanese>https://www.nsa.gov/about/cryptologic-heritage/center-cryptologic-history/pearl-harbor-review/early-japanese/ Early Japanese Systems NSA Center for Cryptologic History</ref>

According to the NSA, "apparently, the JADE machine did not stand up to heavy usage in the field, and, after an initial high volume of traffic, it was used much less." While CORAL traffic was also low, an important user was a Japanese representative, Vice Admiral Abe, to an Axis war-planning council whose reports coded in CORAL were intercepted and proved vital to Allied planning in the European theater.<ref name=NSAearlyjapanese />