Trifid Cipher
Fractionating cipher using three 3 by 3 squares.
The Trifid cipher, invented by Felix Delastelle, extends the Bifid cipher into three dimensions. It splits letters into three coordinates, mixes those coordinates, then converts them back through three 3 by 3 squares.
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Enter a keyword, phrase, or alphabet and the rest will be calculated for you.
Enter a single non A-Z character.
Block size (3 to 12). Leave blank to use the whole message as one block.
No period set.
Encrypting the whole message as one block. Most trifid puzzles use a period of 3 to 12, so set one for a more typical cipher.
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