Fersen Cypher

I know that there is much more to the Fresen-Anoinette codes and it is an interesting study, but for lack of a better name for this perticular cypher I have just decided to call it "Fersen".

This is a substitution code, but I find the method of substitition very interesting. Though it is a simple code, it can be used with other forms of cyphers to create a stronger code. But without further ado here is the Fersen Cypher.

A-B
C-D
E-F
G-H
I-J
K-L
M-N
O-P
Q-R
S-T
U-V
W-X
Y-Z

For those who are familier with this cypher: (For those who aren't you can ignore this)
I know I split 'I' and 'J', but it works out neater this way.

This is how it works:

Take my blog name:

A Study in Purple

A becomes B, S becomes T, T becomes S, U becomes V, etc. So incrypted "A Study in Purple" becomes:

B TSVDZ JM OVQOKF.

Simple, non? But then take the encoded name and put it into a geometrical cypher:

B
TS
VDZ
JMOQ
-OKF-

Now we have the incryption: BSZQ TDOF VMK JO. Even if the Fersen code is simple and easy to break, adding a geometric scrambling with make this code multiple times stronger. It makes the geometric shape almost impossible to find because no matter how many shapes one tries, not a single one will produce the message.