Kryptos:: Monoalphabetic Substitution Systems [Changes]   [Calendar]   [Search]   [Index]   
between subtle shading and the absence of light lies the nuance of iqlusion

Monoalphabetic Substitution Systems

Caesar Cipher

This one doesn't work with either the KRYPTOS or ABC alphabets, verified by multiple people (and myself), with brute force methods (David Wilson). A frequency test also discourages the Caesar Cipher and simple substitution methods:






=0.036082474226804123711340206185567 = random

Message 185 ROT13 with American Flag grille, "boadwax" appears (David Wilson)

Message 1072 Cycled through all shifts, no results, different alphabet possible (Patrick F)

Atbash Cipher

Keyed alphabet variations


General Monoalphabetic

Message 9 Q's may be used as nulls. Gary Warzin came up with a simple monoalphabetic substitution after removing nulls which he believed to have a frequency distribution close to that of English. Andrew Bromage does not believe that this correct, based on digraph coincidences. (Gary Warzin)

Message 55 Digraph list, with and without a shift. (David Wilson)

Back to Section Four Attempts

Quickstart Guide
(last modified 2005-12-28)       [Login]
(No back references.)