POLYBIUS SQUARE
Type: Numbers
> Polybius square, also known as the
Polybius checkerboard, is a device
invented by the Ancient
Greekhistorian and scholar Polybius,
for fractionating plaintext characters
so that they can be represented by a
smaller set of symbols.
(Note: create a table of any size,
readings should start in column then
row)
Example:5x5
Example: 5x5
1 2 3 4 5
1|A|B|C|D|E|
2|F|G|H| I |K|
3|L|M|N|O|P|
4|Q|R|S|T|U|
5|V|W|X|Y|Z|
Ciphertext: 3,2 3,4 3,3 4,3 4,4 1,5 4,2
or
Ciphertext: 32 34 33 43 44 15 42
Plaintext: MO