Encrypt the message ENCRYPTION using a tabular transposition cipher with encryption keyword ONE. If necessary, pad the message with A's. Use only capital letters in your answer. Do not use spaces in your answer.

Encrypted message: CPONYIERTN

Explanation:

Message = ENCRYPTION

keyword = ONE

keyword ONE is of length 3 so the rows are of length 3

Permutation is given by the alphabetical order of the letters in the keyword ONE. Here E appears first in alphabet, then comes N and in last comes O so the order would be 321.

Now the message ENCRYPTION is written in tabular form with width of the rows defined by a keyword ONE

O     N     E

3      2      1

E      N     C

R      Y     P

T       I     O

N

Now this message is read by the column in alphabetic order of the keyword ONE.

Since alphabetic order of E is 1 so the column under E is read first which has the letters:

CPO

Then column under N is read which has the letters:

NYI

In the last the column under O is read which has the letters:

ERTN

So the encrypted message is:

CPONYIERTN