Type: Substitution
(Note: encoding or decoding is based on the keyword input)
(Note: keyword given will be inserted as first in the sequence of alphabet and letters should never repeat)
Example Keyword: GOD
A= G
B= O
C= D
D= A
E= B
F= C
G= E
H= F
I= H
J= I
K= J
L= K
M= L
N= M
O= N
P= P
Q= Q
R= R
S= S
T= T
U= U
V= V
W= W
X= X
Y= Y
Z= Z
Example:
SECRET - SBDRBT
