Rare card
Playfair cipher
- Value
- 50 W
- Attack
- 242
- Defence
- 194
- Players
- 0
The Playfair cipher or Playfair square or Wheatstone–Playfair cipher is a manual symmetric encryption technique and was the first literal digram substitution cipher. The scheme was invented in 1854 by Charles Wheatstone, but bears the name of Lord Playfair for promoting its use.
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