Input
Used to generate the 5×5 key matrix
INSTRUMENTSX
Repeated letters are separated with X. Odd-length texts are padded.
5×5 Key Matrix
M
O
N
A
R
C
H
Y
B
D
E
F
G
I
K
L
P
Q
S
T
U
V
W
X
Z
Input Letters
Output Letters
Same Row
Shift right (wrap around)
Same Column
Shift down (wrap around)
Rectangle
Swap columns
Digraph Encryption Steps (Click any step for details)
Step 1Rectangle
IN→GA
(3,4) + (1,3)
Step 2Same Row
ST→TL
(4,4) + (4,5)
Step 3Rectangle
RU→MZ
(1,5) + (5,1)
Step 4Same Column
ME→CL
(1,1) + (3,1)
Step 5Rectangle
NT→RQ
(1,3) + (4,5)
Step 6Same Column
SX→XA
(4,4) + (5,4)
Output
IN ST RU ME NT SX
GATLMZCLRQXA