𝐂𝐨𝐝𝐞𝐬 𝐚𝐧𝐝 𝐂𝐢𝐩𝐡𝐞𝐫𝐬

𝐂𝐨𝐥𝐮𝐦𝐧𝐧𝐚𝐫 𝐓𝐫𝐚𝐧𝐬𝐩𝐨𝐬𝐢𝐭𝐢𝐨𝐧

Ang kailangan sa columnar ay isang keyword. So for example ang napili kong keyword ay BLACK.

Plaintext: Trust takes years to build, seconds to break and forever to repair
Keyword: Black

So isusulat natun siya in a number of rows with the help of our keyword. The row length that is used is the same as the length of the keyword. Kaya magiging ganto siya:

B L A C K
t r u s t
t a k e s
y e a r s
t o b u i
l d s e c
o n d s t
o b r e a
k a n d f
o r e v e
r t o r e
p a i r x

Since kulang yung plaintext para mafill yung buong box. As you can see hanggang letter R lang siya. Kulang ng isang letter to fill the box. So para mapuno siya, put letter X instead. Then after that reorder each letters in alphabetical order for each row. Kaya magiging ganto siya:

A B C K L
u t s t r
k t e s a
a y r s e
b t u i o
s l e c d
d o s t n
r o e a b
n k d f a
e o v e r
o r r e t
i p r x a

The ciphertext is read off along the columns.
Ciphertext: 
ukabsdrneoi ttytlookorp seruesedvrr tssictafeex raeodnbarta

~~~CTTRO