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Caesar Substitution


Example:

PLAINTEXT abcdefghijklmnopqrstuvwxyz

CIPHERTEXT DEFGHIJKLMNOPQRSTUVWXYZABC

 

It is very easy to break this type of substitution code because there are only 26 alphabets. There are several methods available to crack this code. One of them is by frequency analysis. Another way is to just list out all the alphabets, as shown in the example below.

 

this is a simple cipher
vjku ku c ukorng ekrjgt

v j k u k u c u k o r n g e k r j g t
-------------------------------------
v j k u k u c u k o r n g e k r j g t
u i j t j t b t j n q m f d j q i f s
t h i s i s a s i m p l e c i p h e r
s g h r h r . r h l o k d b h o g d q
. . . . . . . . . . . . . . . . . . .