Bifid Cipher

Bifid is a cipher which combines the Polybius square with transposition, and uses fractionation to achieve diffusion. Keys for the Bifid cipher consist of a 25 letter 'key square'. Note that there is no 'j' in the key-square, it is merged with the letter 'i'.

Plaintext:

Keysquare:

Period:

Ciphertext:

The following buttons can be used to manipulate the text into various forms such as uppercase, lowercase, reverse text, etc. The choice text chosen will be copied and a new page will be opened.