Columnar Transposition Cipher

Rearranges plaintext by writing in rows and reading columns in a key-specified order.

Input

Each digit represents column reading order

1
1
2
2
3
3
4
4
5
5
6
6
7
7
Columnar Grid
Row
Key: 4Read #4
Key: 3Read #3
Key: 1Read #1
Key: 2Read #2
Key: 5Read #5
Key: 6Read #6
Key: 7Read #7
1
A
T
T
A
C
K
P
2
O
S
T
P
O
N
E
3
D
U
N
T
I
L
T
4
W
O
A
M
X
X
X

Column-wise Extraction (Click any column for details)

#1
1
TTNA
#2
2
APTM
#3
3
TSUO
#4
4
AODW
#5
5
COIX
#6
6
KNLX
#7
7
PETX
Output
ATTACKPOSTPONEDUNTILTWOAMXXX
TTNAAPTMTSUOAODWCOIXKNLXPETX