Bifid Cipher
Polybius-based fractionating cipher (5×5 grid).
About this tool
Each letter's row and column coordinates are interleaved, then re-paired into ciphertext. Keyword optionally seeds the grid (I/J merged).
Polybius-based fractionating cipher (5×5 grid).
Each letter's row and column coordinates are interleaved, then re-paired into ciphertext. Keyword optionally seeds the grid (I/J merged).