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Vigenère Cipher

A polyalphabetic substitution cipher that uses a keyword to shift characters in repeating cycles.

Brokenclassical

Plaintext / Input Message

Cryptographic Key / Shift

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

A transposition cipher where plaintext is written diagonally down and up on successive "rails" of a fence.

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

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