Encryption is pretty much everywhere right now. The interesting thing to note
is that the only thing that keeps industries going right now is that there hasn't
been a method or a 'shortcut' to determining these large random numbers that
form the backbone of the encryption schemes out there.
There is a well know scheme called 'rot13'. Which means rotate 13. It relates to the letters of the alphabet. Let me illustrate with an example. 0 1 2 3 4 5 6 7 8 9 10 11 12 a b c d e f g h i j k l m 13 14 15 16 17 18 19 20 21 22 23 24 25 n o p q r s t u v w x y zif you shift all of the letters 13 places to the right you get something like this 0 1 2 3 4 5 6 7 8 9 10 11 12 n o p q r s t u v w x y z 13 14 15 16 17 18 19 20 21 22 23 24 25 a b c d e f g h i j k l mas you can see all letters are shifted 13 places to the right. I also wanted to handle uppercase numbers and a few special characters so I came up with rot16.pl - a program that allows you to encrypt and decrypt with this scheme. |
