Coulmnar Transposition Cipher

[Itouch_hacker]

Here is how to do a basic coulmn transposition cipher.

First off pick a key word. In this case I'm going to use the word: Hacker



Now write the word out and number each letter by the order it appears in the alphabet. Meaning which letter comes first and which letter is last. SEE EXAMPLE:



Next write out your message fitting into the coulmn
I wrote: iNinjas is an epic forum!!!!



Next split each coulm up into a word like so:

iSPU NIIM ISC! NAF! JNO! AER!

You Then want to group them by the order they were made when you used the numbers so it will now be:

NIIM ISC! JNO! iSPU NAF! AER!

Then you want to delete the spaces between the words:



Now you have your ciphertext

NIIMISC!JNO!iSPUNAF!AER!

DECODING

To decode you must have the key. If you have the key. What you do is the same for the beginning.
Use the code and number due to the alphabet.
You will get 6 numbers so you divide the total amount of letters in the cipher text which is 24
By 6 getting 4.

You now group the letters into 4 so you get This again:

NIIM ISC! JNO! iSPU NAF! AER!

Then you want to place below the key and numbers and read the message.


Give it a try!!! Post a message below with your encoded text??

[Alex47]

H isn't the 4th letter in the alphabet and c isn't the 2nd.....


Good tut tho!

[Itouch_hacker]

No it's which comes first in the alphabet in this situation not the order in the alphabet if that makes sense. Look it over

[Itouch_hacker]

Like If you used the word Lie

e comes before i and L so you put a 1 under it. "i" comes before "L" so you put a 2 under it. And L is the last so you put a 3 under it


Resulting in
LIE
321

[C0deH4cker]

Why does the key not do anything?

[LankAsif]

I don't see the point of numbering the letters (hacker). Seems you just devide by number of letters in code word (hacker) and then group. Have I missed the point?

[Itouch_hacker]

numbering and the key makes it harder to decrypt. the key provides the letters and how much you need to group it into. See the example. If you don't have the word hacker for my example then your left with just:

iSPUNIIMISC!NAF!JNO!AER!

and the person your giving the message to will have no idea how to decrypt the message. when a key is provided it will not only tell them how many columns there are but how he/she can order them.

and please re-refer to the example because i messed up on something

[LankAsif]

What I'm saying is that the process of numbering each character in key word (hacker) seems to serve no purpose. The other person could decrypt it just by knowing the key (hacker) as that supplies how many letters the key contains, and thus what number to devide total length of message by.
So how does numbering "A" as "1" help this process?
Sorry if im missing sumin obvious

[Itouch_hacker]

What I'm saying is that the process of numbering each character in key word (hacker) seems to serve no purpose. The other person could decrypt it just by knowing the key (hacker) as that supplies how many letters the key contains, and thus what number to devide total length of message by.
So how does numbering "A" as "1" help this process?
Sorry if im missing sumin obvious

Like i said i messed up on something and re-fixed it

Next split each coulm up into a word like so:

iSPU NIIM ISC! NAF! JNO! AER!

You Then want to group them by the order they were made when you used the numbers so it will now be:

NIIM ISC! JNO! iSPU NAF! AER!

Then you want to delete the spaces between the words:

Now you have your ciphertext

NIIMISC!JNO!iSPUNAF!AER!

[Itouch_hacker]

Sorry for the mass amount of confusion i made this fairly quickly i hope i cleared things up if not let me know what still confuses you and i will try to explain

[LankAsif]

Lol, it was my bad not re-referring closely enough. I never spotted the amended bit. And I looked lol. I blame my lazy old eyes. Future re-referencing will be done with monocle in place.
Thanks for the tut and could possibly come in handy ine day.
Thanks man

[Itouch_hacker]

well in the quote i gave it shows how you need to rearrange in the order of the numbers

[LankAsif]

Lol, this is why I said I missed it in my last post. Was saying it was my bad for not rechecking well enough (then the bit about blaming my lazy old eyes).
Anyway was saying thanks and this could be useful.
*ends transmission so others can pitch in*

[A3MIRAL]

I like this!
This is a good way to transmit messages, as long as both people do it right with no confusion!
I think this is better than the public key one you posted about for messaging purposes.

[A3MIRAL]

Awe
hh'pwtu?ias?