The Pigpen Cipher was used by Freemasons in the 18th Century to keep their records private. The cipher does not substitute one letter for another; rather it substitutes each letter for a symbol. The alphabet is written in the grids shown, and then each letter is enciphered by replacing it with a symbol that corresponds to the portion of the pigpen grid that contains the letter. For example:
Type your message (maximum 40 characters) into the box labelled 'Plaintext', then click the button labelled 'Encipher Plaintext' to encrypt your message.
Encipher PlaintextClear Boxes
Pigpen Puzzle