Tag Archives: Polybius

Polybius

By Murk | Published: September 5, 2004

Polybius was a greek who invented a system of converting alphabetic characters into numeric characters. It was devised to enable messages to be easily signalled using torches. Here I’ve presented a polybius square using our current alphabet. Note that i and j share the same position. However thjs wjll not cause much of a problem when decoding as jt wjll [...]

This post is part of a series of 47 posts which begins with The Caesar Shift, the latest post in the series is Letter Groups.