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 30 characters) into the box labelled
'Plaintext',
then
click the button labelled 'Encipher Plaintext' to encrypt
your message.
