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transposition cipher




A cipher that encodes a message by reordering the plaintext. The receiver decodes the message using the inverse transposition. A simple kind of transposition cipher writes the message into a rectangle by rows, for example:
Asimplekin
doftranspo
sitionciph
erwritesth
emessagein
toarectang
lebyrowsan
dreadsitou
tbycolumns
and reads it by columns:
Adsee tldts oirmo erbif tweab eymti rsrya cproi serdo lanta cosle ncegt wiuks iseas tmipp tinao nnohh ngnus.
This type of cipher can be made more difficult to crack by permuting the rows and columns.


Related entry

   • substitution cipher


Related category

   • CODES AND CIPHERS