Beaufort cipher

noun Beau·fort cipher \ˈbō-fərt-\

Definition of Beaufort cipher

  1. :  a system of polyalphabetic substitution equivalent to Vigenère cipher with a reversed normal cipher sequence, the keying formula of which is P + C=K

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Origin and Etymology of beaufort cipher

after Sir Francis Beaufort †1857 English naval officer and hydrographer

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capable of being understood in two ways

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