170 lines
4.2 KiB
Plaintext
170 lines
4.2 KiB
Plaintext
|
|
|
|
|
|
|
|
|
|
The Basic Cipher
|
|
======================================
|
|
created by, UndeadPhreak
|
|
********************************************
|
|
|
|
|
|
I have allways loved codes and ciphers, so i have put the basics into this file. these ciphers are simple and chances are you've already used then before. But they work.
|
|
|
|
first of all there are two types of code,
|
|
there is the "Transport Cipher" and and the "Substatute Cipher".
|
|
(Cipher is a fancy word for code)
|
|
|
|
A Transport cipher is when you mix up the letters from the original text (also called the "plain text")
|
|
this kind of cipher can be as simple of as complicated as you
|
|
want, just keep in mind that your goal is not stop your enemy
|
|
from deciphering the mesage as much as it is to buy time so that
|
|
by the time they do decipher it the information will be useless.
|
|
|
|
A Substatution Cipher is when you substatute other letters, numbers, or symbols for the plain text. this is the most common
|
|
form of Ciphers because they are easy to remember.
|
|
the downside to this kind of cipher is the fact that it is easy to crack, the person trying to figure it out simply has to find a pattern in the code to figure out what the letters are.
|
|
|
|
|
|
now i will give simple examples of both forms.
|
|
|
|
|
|
|
|
|
|
first we will use a "Transportation Cipher"
|
|
to encrypt this sentance:
|
|
|
|
"meet me sunday by the boat house"
|
|
|
|
now that we know what will be in our cipher we can start to
|
|
encrypt it.
|
|
we will use a simple form.
|
|
|
|
|
|
|
|
in this form we will write down our sentance so that it makes a box five letters wide.
|
|
|
|
MEETM
|
|
ESUND
|
|
AYBYT
|
|
HEBOA
|
|
THOUS
|
|
EENDM
|
|
|
|
|
|
|
|
|
|
|
|
since there is four spaces left i added the letters; ENDM
|
|
for "end mesage".
|
|
|
|
now that we have made our box, it is time to copy down the
|
|
cipher text. To do this we simply write down the letters going down instead of across like the plain text.
|
|
after we do this our mesage looks like this:
|
|
|
|
|
|
|
|
MEAHTE ESYEHE EUBBON TNYOUD MDTASM
|
|
|
|
|
|
To decipher our message all we have to do is make another box,
|
|
it will look like this:
|
|
|
|
|
|
M E E T M
|
|
E S U N D
|
|
A Y B Y T
|
|
H E B O A
|
|
T H O U S
|
|
E E N D M
|
|
|
|
|
|
Then we write down the letters moving across the box,
|
|
after we do that it will look like this:
|
|
|
|
|
|
|
|
MEETM ESUND AYBYT HEBOA THOUS EENDM
|
|
|
|
|
|
Now all we have to do is add space in the right places:
|
|
|
|
|
|
|
|
|
|
MEET ME SUNDAY BY THE BOAT HOUSE ENDM
|
|
|
|
|
|
you can use any shape you want and any form of transfering your plain text to it.
|
|
|
|
|
|
Now we will use a Substatution Cipher.
|
|
|
|
first of all we need to make a key for our cipher,
|
|
both the sender and the reciver must either have a copy of the key or have it memorised.
|
|
for our key we will use our keboard,
|
|
here is our key:
|
|
|
|
Q = A
|
|
W = B
|
|
E = C
|
|
R = D
|
|
T = E
|
|
Y = F
|
|
U = G
|
|
I = H
|
|
O = I
|
|
P = J
|
|
A = K
|
|
S = L
|
|
D = M
|
|
F = N
|
|
G = O
|
|
H = P
|
|
J = Q
|
|
K = R
|
|
L = S
|
|
Z = T
|
|
X = U
|
|
C = V
|
|
V = W
|
|
B = X
|
|
N = Y
|
|
M = Z
|
|
|
|
|
|
|
|
Okay, now that we have our key we can start enciphering our message.
|
|
Group all of the letters into five letter "words"
|
|
|
|
MEET ME SUNDAY BY THE BOAT HOUSE
|
|
|
|
becomes
|
|
|
|
MEETM ESUND AYBYT HEBOA THOUS E
|
|
|
|
Now lets use our key to hide the message.
|
|
after we use our key we get this:
|
|
|
|
|
|
DTTZD TLXFR QNWNZ ITWGQ ZIGXL T
|
|
|
|
|
|
Now all the reciver has to do is match the letters with the ones
|
|
on the key to find the message.
|
|
|
|
These are too very simple and basic examples of ways to encypher a message, but both are the base of most codes and ciphers. you can change and modify you own codes any way you chose, the posabilities are endless!
|
|
|
|
|
|
|
|
until next time....
|
|
|
|
UndeadPhreak
|
|
|
|
|
|
|
|
contact me @ undeadphreak@gmail.com
|
|
|
|
created on 12/19/11 @ 3:12 PM
|
|
|