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Japanese authors have identified two events that influenced the Japanese army's decision to invite a foreigner to improve their cryptology. The first was an incident during the Siberian Intervention. The Japanese army came into possession of some Soviet diplomatic correspondence, but their cryptanalysts were unable decipher the messages.
Analog of the Japanese Type B Cipher Machine (codenamed Purple) built by the U.S. Army Signal Intelligence Service Purple analog equipment in use. 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 Office from February ...
Al-Khalil ibn Ahmad al-Farahidi: wrote a (now lost) book on cryptography titled the "Book of Cryptographic Messages". Al-Kindi, 9th century Arabic polymath and originator of frequency analysis. Athanasius Kircher, attempts to decipher crypted messages; Augustus the Younger, Duke of Brunswick-Lüneburg, wrote a standard book on cryptography
Japanese Navy ORANGE cryptographic device captured by US Navy. In the history of cryptography, 91-shiki ōbun injiki (九一式欧文印字機, "System 91 Typewriter for European Characters") or Angōki Taipu-A (暗号機 タイプA, "Type A Cipher Machine"), codenamed Red by the United States, was a diplomatic cryptographic machine used by the Japanese Foreign Office before and during World ...
The overall accepted origin for the female name Brenda is the Old Nordic male name Brandr meaning both torch and sword: evidently the male name Brandr took root in areas of the British Isles under Nordic dominance and through being heard as '"Brenda" was eventually adopted as a female name. [1]
JN-25 is the name given by codebreakers to the main, and most secure, command and control communications scheme used by the IJN during World War II. [10] Named as the 25th Japanese Navy system identified, it was initially given the designation AN-1 as a "research project" rather than a "current decryption" job.
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.
Genevieve Feinstein Award in Cryptography (George Mason University) [2] Her breakthrough in deciphering the Purple machine has been called, in the Encyclopedia of American Women at War, "one of the greatest achievements in the history of U.S. codebreaking". [4] NSA posthumously inducted her into the NSA Hall of Honor in 2010. [6]