The Development of Monitors Essay

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The Development of Monitors

If you want to keep information secret, you have two possible strategies: hide the existence of the information, or make the information unintelligible. Cryptography is the art and science of keeping information secure from unintended audiences, of encrypting it. Conversely, cryptanalysis is the art and science of breaking encoded data. The branch of mathematics encompassing both cryptography and cryptanalysis is cryptology. This method of secrecy has existed since 1900 B.C. in the form of Egyptian hieroglyphs. Up to the present two organizations have come to the front of the field; United States’ National Security Agency (NSA) and United Kingdom’s Government Communications Headquarters
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In an effort to keep the United States from playing an effective role in the war in Europe, Germany offered Mexico the opportunity to regain Texas and other territories lost to the United States during the nineteenth century, in return for a Mexican declaration of war against the U.S. The telegram backfired, as its release by British authorities brought the U.S. closer to war with Germany. Tactically, the First World War introduced wireless communications to the battlefield, increasing flexibility but making codes and ciphers even more essential in guaranteeing security.
After the armistice of 1918, the United States maintained modest but significant cryptologic establishments in the Navy and War Departments, along with an interdepartmental effort conducted in New York and headed by Herbert O. Yardley.
Born in 1889 in Indiana, Herbert O. Yardley began his career as a code clerk in the State Department. He accepted a Signal Corps Reserve commission and served as a cryptologic officer with the American Expeditionary Forces in France during the First World War. In the 1920s he was chief of MI-8, the first U.S. peacetime cryptanalytic organization, jointly funded by the U.S. Army and the Department of State. In that capacity, he and a team of cryptanalysts exploited nearly two dozen foreign diplomatic cipher systems. MI-8 was disbanded in 1929 when the State Department withdrew its share of

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