Hello kray here,

Cryptography is one of the most fun things I love to do in my free time. It is based off of input(left) and outputs(right). So I would just like to give you some basic instruction for anybody wishing to know. Also I might use this in future contest I hold.

Anyways here is how cryption works:
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probably one of the most simplest ways to put it.

Here's a practice for decoding a message (I put this as learning first because it is easier to understand why encode once you have already know how to decode). Here are some real basic strips to help out.
Link to Decode Strips
Strips A-D here
Strips E-H here
Strips I-L here
Strips M-P here
Strips Q-T here
Strips U-X here
Strips Y-Z here

First you will look at your keyword. In this case it it: KEY
So what you will do is look at the strip K, E, and Y, in the order the keyword is spelled.
Second you will look at an encrypted message. For this example it will be:
RIJVS RRIPO

So the easiest method in my opinion is to make the process into 3 lines

K E Y K E Y K E Y K
R I J V S R R I P O
H E L L O T H E R E

The first line is the keyword which is continued in sequence with the amount of letters. (notice how it repeats)
The second line is the encrypted message matched up under the keyword letters. This will tell you what strip to look on and what letter input to look for to get your out put.
For example: For the very first letter, We look for the letter R as our input on the K strip, which gives us the output of H. The end result should be "Hello There"

Hope this help explained some things.

Thanks. It took me a while to understand this, but it did help. :3 Hopefully this will help me win the contest or atleast get close to it. :D