Bacon's Cipher
Encode text as A/B groupings (Francis Bacon, 1605).
Output
AABBB AABAA ABABB ABABB ABBBA BABBA ABBBA BAAAB ABABB AAABB
Francis Bacon's biliteral cipher (1605). Each letter encodes as 5 binary symbols (A and B). The trick: hide the cipher in two-style text, like roman vs italic in a printed book. The reader sees a normal page; the cipher reads the typeface.
About
Each letter encodes as 5 binary symbols (A or B). The original cipher hid the binary in the typeface (italic vs roman) of an innocuous-looking text. The reader sees a normal page; the message reads the typefaces.
How to use
- Pick encode or decode.
- Type your text or A/B sequence.
FAQ
Is this still used?+
Mostly in puzzles. The basic concept (binary encoding hidden in plain sight) lives on in modern steganography - hiding bits in image LSBs, audio noise, and zero-width unicode.