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Playfair Cipher

A polygraphic substitution cipher that encrypts pairs of letters using a dynamic 5x5 key matrix.

Brokenclassical

Plaintext / Input Message

Cryptographic Key / Shift

Auto Compute

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Preset nameSave key with preset — disabled by default. Stored keys remain readable to anyone with access to this browser profile.

Saved presets for this cipher

Output Result

No output yetRun a computation to see the encrypted / decrypted result.

Imported traces are validated and replayed locally. They never run a cipher operation automatically.

Continue your cryptography learning path

Data Encryption Standard. A legacy 64-bit block cipher utilizing a 56-bit key size.

A simple stream cipher performing byte-wise XOR operations between plaintext and key.

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