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The Japanese Foreign Office used a cipher machine to encrypt its diplomatic messages. The machine was called "PURPLE" by U.S. cryptographers. A message was typed into the machine, which enciphered and sent it to an identical machine. The receiving machine could decipher the message only if set to the correct settings, or keys. American ...
The Cipher Bureau moved to New York City on May 20, 1919, where it continued intelligence activities as the Code Compilation Company, or the Black Chamber, under Yardley's command. [ 2 ] [ 5 ] [ 6 ] Jointly funded by the Army and the State Department , the Cipher Bureau was tasked with breaking the communications of other nations, primarily ...
Monumental design and formal planning of spaces are hallmarks of the style. The Federal Building and U.S. Courthouse inspired Beaux-Arts designs for other public buildings in Indianapolis, including Indianapolis City Hall (1910), the Indianapolis Public Library (1917), and buildings in the Indiana World War Memorial Plaza (dedicated in 1927).
Copiale cipher: Solved in 2011 1843 "The Gold-Bug" cryptogram by Edgar Allan Poe: Solved (solution given within the short story) 1882 Debosnys cipher: Unsolved 1885 Beale ciphers: Partially solved (1 out of the 3 ciphertexts solved between 1845 and 1885) 1897 Dorabella Cipher: Unsolved 1903 "The Adventure of the Dancing Men" code by Arthur ...
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The sender chooses a set number of words at random from the poem and gives each letter in the chosen words a number. The numbers are then used as a key for a transposition cipher to conceal the plaintext of the message. The cipher used was often double transposition. To indicate to the receiver which words had been chosen, an indicator group of ...
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It was completed in 1974 when it served as the headquarters of Indiana Bell. [2] [3] It is connected with the 22-story AT&T Building, located just to the north at 240 North Meridian Street, and both buildings housed the Indiana headquarters for AT&T. The AT&T 220 Building was sold to Cleveland-based Geis Properties in 2013 for $16.5 million.