Pigpen Cipher
Pigpen Cipher Geometric simple substitution cipher, which exchanges letters for symbols which are fragments of a grid. The example key shows one way the letters can be assigned to the grid.
Printables
Reverse Code
Reverse Code A simple substitution cipher where each letter of the alphabet is mapped to its reverse counterpart. This means ‘A’ becomes ‘Z’, ‘B’ becomes ‘Y’, ‘C’ becomes ‘X’, and so on.
Grid Code
Grid Code Each letter in the plaintext is replaced by its coordinates (row and column) in the grid.
