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Analog of the Japanese Type B Cipher Machine (codenamed Purple) built by the U.S. Army Signal Intelligence Service Purple analog in use. In the history of cryptography, the "System 97 Typewriter for European Characters" (九七式欧文印字機 kyūnana-shiki ōbun injiki) or "Type B Cipher Machine", codenamed Purple by the United States, was an encryption machine used by the Japanese Foreign ...
Genevieve Marie Grotjan Feinstein (April 30, 1913 – August 10, 2006) was an American mathematician and cryptanalyst. She worked for the Signals Intelligence Service throughout World War II, during which time she played an important role in deciphering the Japanese cryptography machine Purple, and later worked on the Cold War-era Venona project .
The new code, codenamed PURPLE (from the color obtained by mixing red and blue), was baffling. PURPLE, like Enigma, began its communications with the same line of code but then became an unfathomable jumble.
Arlington Hall had delayed study of the Army codes until 1942 because of the "high payoff" from diplomatic codes, but were not successful with Army codes until 1943. [ 18 ] The fourteen-part message breaking off negotiations with the United States in December 1941 on the eve of Pearl Harbour was in Purple; and was translated by the Americans in ...
Hospital emergency codes are coded messages often announced over a public address system of a hospital to alert staff to various classes of on-site emergencies. The use of codes is intended to convey essential information quickly and with minimal misunderstanding to staff while preventing stress and panic among visitors to the hospital.
e. The handkerchief code (also known as the hanky code, the bandana code, and flagging) [ 1] is a system of color-coded cloth handkerchief or bandanas for non-verbally communicating one's interests in sexual activities and fetishes. The color of the handkerchief identifies a particular activity, and the pocket it is worn in (left or right ...
In some uses, hexadecimal color codes are specified with notation using a leading number sign (#). [1] [2] A color is specified according to the intensity of its red, green and blue components, each represented by eight bits. Thus, there are 24 bits used to specify a web color within the sRGB gamut, and 16,777,216 colors that may be so specified.
The first letter of the color code is matched by order of increasing magnitude. The electronic color codes, in order, are: The electronic color codes, in order, are: 0 = B lack