Editing Transposition cipher (section)

== Myszkowski transposition ==

A variant form of columnar transposition, proposed by Émile Victor Théodore Myszkowski in 1902, requires a keyword with recurrent letters.  In usual practice, subsequent occurrences of a keyword letter are treated as if the next letter in alphabetical order, ''e.g.,'' the keyword TOMATO yields a numeric keystring of "532164."

In Myszkowski transposition, recurrent keyword letters are numbered identically, TOMATO yielding a keystring of "432143."

 4 3 2 1 4 3
 W E A R E D
 I S C O V E
 R E D F L E
 E A T O N C
 E

Plaintext columns with unique numbers are transcribed downward;
those with recurring numbers are transcribed left to right:

 ROFOA CDTED SEEEA CWEIV RLENE