Playfair cipher

noun

: a cipher involving a digraphic substitution from a single alphabet square which begins with the letters of a keyword and continues with the remaining letters of the alphabet less J

Word History

Etymology

after Lyon, Baron Playfair †1898 British scientist & public official

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Cite this Entry

“Playfair cipher.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Playfair%20cipher. Accessed 5 Feb. 2023.

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