Purple (cipher Machine)
In the history of cryptography, 97-shiki ōbun inji-ki (九七式欧文印字機) ("System 97 Printing Machine for European Characters") or Angōki Taipu-B (暗号機 タイプB) ("Type B Cipher Machine"), codenamed Purple by the United States, was a diplomatic cryptographic machine used by the Japanese Foreign Office just before and during World War II. The machine was an electromechanical stepping-switch device.
The information gained from decryptions was eventually code-named Magic within the US government.
The codename "Purple" referred to binders used by US cryptanalysts for material produced by various systems; it replaced the Red machine used by the Japanese Foreign Office. The Japanese also used CORAL and JADE stepping-switch systems.
Read more about Purple (cipher Machine): Weaknesses and Cryptanalysis, Other Factors, Further Reading
Famous quotes containing the word purple:
“This great purple butterfly,
In the prison of my hands,
Has a learning in his eye
Not a poor fool understands.
Once he lived a schoolmaster
With a stark, denying look....”
—William Butler Yeats (1865–1939)