Alright, I've explained much about cryptology on my previous post, so I guess it's alright if I discuss about other cryptology methods as well. There are various other methods of protecting the data, other than PGP & ROT13 and some of them uses a very low-tech to pass on the data to the intended recipient.

What I will share is the most basic cryptology methods. If you do need more advanced methology, try to check it out in Google.

Some basic ones use number to represent the character. This goes for the table like this:

a / b / c / d / e .... x / y / z
1 / 2 / 3 / 4 / 5 .... 24 / 25 / 26

So, a simple message such as:

This is a message
Would roughly be translated to

20/8/9/19/9/19/1/13/5/19/19/1/7/5
The table above is the most basic character-number code representation, but for more complex encryption, you can swap the numbers around the table, so that a person will find it hard to derypt your message without a proper table. You might even try an inverse table:

a / b / c / d / e .... x / y / z
26 / 25 / 24 / 23 / 22 .... 3 / 2 / 1

Another method is called anagrams, which uses simple technique to swap words around the order. For example:

This is a message
I would have to remove the spaces & put in capital to indicate it is a new word:

ThisIsAMessage
And I can rearrange the code to:

T|i|A|s
h|s|M|a
i|I|e|g
s|s|s|e
You need to read the message from top down in 4 spaces. By merging the message in a single file, you'll get:

TiAshsMaiIegssse
Great stuff huh? Realize that the message is separated to 4 letters, so basically my key is 4. The person decrypting this message must have the key to decrypt the sequence. Okay, I guess that's enough for today. Let's see if I can come out with more material for other methods as well. Hope you guys have fun fusing English characters with mathematics. If you want more information, you might even want read my next post.