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This is an examination of codes and ciphers as they figured in American History prior to the twentieth century, prior to the era of wireless or radio communication and the advent of the electronic age. It forms a backdrop for understanding modern cryptology and the role of cryptology in the growth of this nation. Cryptology, the art and science of code-making and code breaking, depends on the prevailing state of technology and the perception of threat.… (mais)
Informação do Conhecimento Comum em inglês.Edite para a localizar na sua língua.
But why a cypher between us . . . there may be matters merely personal to ourselves, and which require the cover of a cypher more than those of any other character. This last purpose, and others which we cannot for[e]see may render it convenient & advantageous to have at hand a mask for whatever may need it.
--President Thomas Jefferson to Robert Livingston, 1802
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Informação do Conhecimento Comum em inglês.Edite para a localizar na sua língua.
Almost two months after the declaration of war against Spain in 1898, the coded dispatch on the following page, cabled to the secretary of state from the American minister in Madrid, arrived at the White House in Washington, DC.
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Informação do Conhecimento Comum em inglês.Edite para a localizar na sua língua.
And despite the book's loss a decade earlier, President Woodrow Wilson and his trusted advisor, Colonel Edward House, would use the 1899 book for their private correspondence in the early years of World War I.
This is an examination of codes and ciphers as they figured in American History prior to the twentieth century, prior to the era of wireless or radio communication and the advent of the electronic age. It forms a backdrop for understanding modern cryptology and the role of cryptology in the growth of this nation. Cryptology, the art and science of code-making and code breaking, depends on the prevailing state of technology and the perception of threat.
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