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Cryptographic slide rule used as a calculation aid by the Swiss Army between 1914 and 1940. The Vigenère cipher is simple enough to be a field cipher if it is used in conjunction with cipher disks. [13] The Confederate States of America, for example, used a brass cipher disk to implement the Vigenère cipher during the American Civil War. The ...
The work of Al-Qalqashandi (1355–1418), based on the earlier work of Ibn al-Durayhim (1312–1359), contained the first published discussion of the substitution and transposition of ciphers, as well as the first description of a polyalphabetic cipher, in which each plaintext letter is assigned more than one substitute. [1]
Gilbert Sandford Vernam (April 3, 1890 – February 7, 1960) was a Worcester Polytechnic Institute 1914 graduate and AT&T Bell Labs engineer who, in 1917, invented an additive polyalphabetic stream cipher and later co-invented an automated one-time pad cipher.
On July 22, 1919, U.S. Patent 1,310,719 was issued to Gilbert Vernam for the XOR operation used for the encryption of a one-time pad. [7] Derived from his Vernam cipher, the system was a cipher that combined a message with a key read from a punched tape. In its original form, Vernam's system was vulnerable because the key tape was a loop, which ...
The name LaKeisha is typically considered American in origin, but has elements pulled from both French and African roots. Other names like LaTanisha, JaMarcus, DeAndre, and Shaniqua were created in the same way. Punctuation marks are seen more often within African-American names than other American names, such as the names Mo'nique and D'Andre ...
Caribbean—the region between southeastern North America and northern South America, consisting of the Caribbean Sea, its islands (most of which enclose the sea), and the surrounding coasts. The islands—composed of the Greater Antilles , Lesser Antilles , and Lucayan Archipelago —are also known as the West Indies (or, in some languages ...
The most popular given names by state in the United States vary. This is a list of the top 10 names in each of the 50 states and the District of Columbia for the years 1998 through 2023. This information is taken from the "Popular Baby Names" database maintained by the United States Social Security Administration. [1]
The name Commonwealth of Virginia dates back to its independence from the Kingdom of Great Britain. Virginia's first constitution (adopted on June 29, 1776) directed that "Commissions and Grants shall run, In the Name of the commonwealth of Virginia, and bear test by the Governor with the Seal of the Commonwealth annexed."