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  2. Hill cipher - Wikipedia

    en.wikipedia.org/wiki/Hill_cipher

    Hill's cipher machine, from figure 4 of the patent. In classical cryptography, the Hill cipher is a polygraphic substitution cipher based on linear algebra.Invented by Lester S. Hill in 1929, it was the first polygraphic cipher in which it was practical (though barely) to operate on more than three symbols at once.

  3. Lester S. Hill - Wikipedia

    en.wikipedia.org/wiki/Lester_S._Hill

    Lester S. Hill (1891–1961) was an American mathematician and educator who was interested in applications of mathematics to communications.He received a bachelor's degree (1911) and a master's degree (1913) from Columbia College and a Ph.D. from Yale University (1926).

  4. Smithy code - Wikipedia

    en.wikipedia.org/wiki/Smithy_code

    The cipher was a type of polyalphabetic cipher known as a Variant Beaufort, using a keyword based on the Fibonacci sequence, namely AAYCEHMU. This is the reverse of the Vigenère cipher, which here enables decryption rather than encryption. Jackie Fisher, Captain R.N. 1883, later First Sea Lord 1904–1910, 1914–1915

  5. Aristocrat Cipher - Wikipedia

    en.wikipedia.org/wiki/Aristocrat_Cipher

    The Aristocrat Cipher is a type of monoalphabetic substitution cipher in which plaintext is replaced with ciphertext and encoded into assorted letters, numbers, and symbols based on a keyword. The formatting of these ciphers generally includes a title, letter frequency, keyword indicators, and the encoder's nom de plume . [ 1 ]

  6. America is now paying more in gross interest on its record ...

    www.aol.com/finance/america-now-paying-more...

    A deficit is what happens when the government spends more money in a fiscal year than it brings in through taxes — and the last few years have been expensive for the U.S.

  7. Best Online Bingo Games That Pay Real Money in 2023 - AOL

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  8. Why Cherry Hill-based TD Bank is paying $1.8B in penalties ...

    www.aol.com/why-cherry-hill-based-td-145356394.html

    Attorney General Merrick B. Garland said in a statement Thursday that TD Bank became a criminal by making its services convenient for criminals.

  9. National Cipher Challenge - Wikipedia

    en.wikipedia.org/wiki/National_Cipher_Challenge

    In the 2017, more than 7,500 students took part in the competition. [2] ... the Transposition cipher, the Vigenère cipher and the 2x2 Hill cipher. ...