playfair cipher

Questions

What does playfair cipher mean?

A manual symmetric encryption technique that encrypts pairs of letters (digraphs).

Where does playfair cipher come from?

Named after Lord Playfair, who promoted it. (It was invented in 1854 by Charles Wheatstone.)

How to pronounce playfair cipher

1. Open the pronunciation page — Open the Speakur entry for “playfair cipher”.
2. Read the phonetic spelling — Read the IPA spelling () so you know which sounds to aim for.
3. Play the audio — Click Play to hear reference audio for “playfair cipher”.
4. Repeat and practice — Say “playfair cipher” aloud, matching stress and vowels until it feels natural.