Purple - meaning and definition. What is Purple
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What (who) is Purple - definition

JAPANESE DIPLOMATIC CODE NAMED PURPLE BY THE US
Purple code; Purple (cryptography); Purple cipher; PURPLE; Japanese "Purple" cypher; Japanese Purple cypher; Purple cypher; Purple (cipher); Purple machine; 97-shiki ōbun; 97-shiki-obun; 97-shiki-o-bun; 97-shiki-ō-bun; 97-shiki ōbun injiki; 97-shiki ō-bun injiki; Purple (cipher machine); Purple (Cipher Machine); Type 97 cypher machine; Purple cipher machine
  • Red]] analog is also visible
  • Internal wiring of the improved U.S. Army PURPLE analog.  All three stepping motor stages for the "twenties letters" are shown. The three large rectangular panels with many wires implement the substitution matrices for each stage. Each twenties stepping switch is located beneath its wiring panel. The stepping switches for the sixes letters are near the middle.
  • Front panel of the March 1944 improved U.S. Army PURPLE analog. The three rows of indicator lights show the position of the rotor in each stage. a removable plugboard in the center selects the alphabet. A six-position switch selects the stepping order and buttons on the box at top center are used to set the initial position of each rotor. Exhibit at the [[National Cryptologic Museum]]
  • Close-up of the six-position switch that selects the stepping order in the improved U.S. analog
  • Japanese Type A (RED) cipher machine
  • Analog of the Japanese Type B Cipher Machine (codenamed Purple) built by the U.S. Army [[Signal Intelligence Service]]
  • Side view of recovered Type 97 fragment. The three [[stepping switch]]es implemented one stage of the "twenties" cipher, with 25 [[permutation]]s of 20 letters encoded by the mass of wires underneath.
  • Close up of fragment's stepping switches showing seven contact layers
  • Schematic diagram of SIS Purple analog machine
  • 7 December 1941]]. Note the hand-written calculations at the upper right which deduce the initial positions of the rotors and the stepping order from the message indicator.
  • Purple analog in use
  • reverse engineered]] by the United States Army's [[Signal Intelligence Service]] in 1940.
  • Six level telephone [[stepping switch]] similar to the type used by SIS to build its first Purple. analog. On display at [[The Telephone Museum]].

Purple         
·adj Blood-red; bloody.
II. Purple ·noun Any shell of the genus Purpura.
III. Purple ·noun ·see Purpura.
IV. Purple ·noun A cardinalate. ·see Cardinal.
V. Purple ·noun A disease of wheat. ·same·as Earcockle.
VI. Purple ·vt To make purple; to dye of purple or deep red color; as, hands purpled with blood.
VII. Purple ·adj Imperial; regal;
- so called from the color having been an emblem of imperial authority.
VIII. Purple ·noun A color formed by, or resembling that formed by, a combination of the primary colors red and blue.
IX. Purple ·noun Hence: Imperial sovereignty; royal rank, dignity, or favor; loosely and colloquially, any exalted station; great wealth.
X. Purple ·adj Exhibiting or possessing the color called purple, much esteemed for its richness and beauty; of a deep red, or red and blue color; as, a purple robe.
XI. Purple ·noun Any species of large butterflies, usually marked with purple or blue, of the genus Basilarchia (formerly Limenitis) as, the banded purple (B. arthemis). ·see ·Illust. under Ursula.
XII. Purple ·noun Cloth dyed a purple color, or a garment of such color; especially, a purple robe, worn as an emblem of rank or authority; specifically, the purple rode or mantle worn by Roman emperors as the emblem of imperial dignity; as, to put on the imperial purple.
purple         
(purples)
Frequency: The word is one of the 1500 most common words in English.
1.
Something that is purple is of a reddish-blue colour.
She wore purple and green silk.
...sinister dark greens and purples.
COLOUR
2.
Purple prose or a purple patch is a piece of writing that contains very elaborate language or images.
...passages of purple prose describing intense experiences.
ADJ: usu ADJ n
purple         
I
adj.
livid
purple with (purple with rage)
II
n. dark; light purple

Wikipedia

Type B Cipher Machine

In the history of cryptography, the "System 97 Typewriter for European Characters" (九七式欧文印字機) or "Type B Cipher Machine", codenamed Purple by the United States, was an encryption machine used by the Japanese Foreign Office from February 1939 to the end of World War II. The machine was an electromechanical device that used stepping-switches to encrypt the most sensitive diplomatic traffic. All messages were written in the 26-letter English alphabet, which was commonly used for telegraphy. Any Japanese text had to be transliterated or coded. The 26-letters were separated using a plug board into two groups, of six and twenty letters respectively. The letters in the sixes group were scrambled using a 6 × 25 substitution table, while letters in the twenties group were more thoroughly scrambled using three successive 20 × 25 substitution tables.

The cipher codenamed "Purple" replaced the Type A Red machine previously used by the Japanese Foreign Office. The sixes and twenties division was familiar to U.S. Army Signals Intelligence Service (SIS) cryptographers from their work on the Type A cipher and it allowed them to make early progress on the sixes portion of messages. The twenties cipher proved much more difficult, but a breakthrough in September 1940 allowed the Army cryptographers to construct a machine that duplicated the behavior (was an analog) of the Japanese machines, even though no one in the U.S. had any description of one.

The Japanese also used stepping-switches in systems, codenamed Coral and Jade, that did not divide their alphabets. American forces referred to information gained from decryptions as Magic.

Examples of use of Purple
1. "I remembered she had purple slipper shoes on, so I wrote: ‘Girl with purple slipper shoes.
2. He said his lucky colour was purple and always wore purple socks on the show.
3. "He was a great man," said Brown, who was wearing purple Fashion Fair eye shadow that matched her purple blouse.
4. "Green on green, red on red and purple on purple – you have got to be careful," the girl says.
5. Something like purple." "Sister Lavender," she answers.