Bifid Cipher

Coordinates:

Key:

Square size:

Shared letters:

Period:

Text analysis functions:

Split count:

Split with:

If Other (enter split char):

Key cracking by Hill Climbing with Simulated Annealing:

Loops for Hill Climbing:

Crib:

Crack with word list: Select to try cracking the key by pasting a wordlist into the key box

Execution time:
Input text length:

Version: v5.1.3 (see changes). Last updated: 04/02/2024

The latest update was a redesign of the layout for both desktop and mobile. However, for returning users the update to Bootstrap (the system used for creating the layout) may appear to have messed up the layout. To fix it, do Ctrl-F5 on a desktop, and on your mobile delete stored browser files, and sorry but it's different for each mobile browser type. I had to look it up on the internet!'

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Bifid Cipher Toggle working text

Bifid Cipher