Abstract
Letters, words, and other pieces of text are changed by a substitution into a different piece. This creates confusion. A completely different effect is obtained by transpositions, which move the pieces around in a text without changing them individually; this creates diffusion. Suitably combined and generalized, these two operations form the basis of almost any strong cryptosystem, as postulated by Claude Shannon. We discuss three types of transpositions in this chapter: the Greek skytale, columnar transpositions and grilles.
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© 2015 Springer-Verlag Berlin Heidelberg
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von zur Gathen, J. (2015). Chapter F Transposition ciphers. In: CryptoSchool. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-48425-8_16
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DOI: https://doi.org/10.1007/978-3-662-48425-8_16
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Publisher Name: Springer, Berlin, Heidelberg
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