Abstract
Simple (monographic) substitution requires a complete decomposition of the plaintext in single characters. A polygraphic substitution allows polygraphic encryption steps, i.e., encryption steps of the form V (n) ⇢ W (m) with n > 1.
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After the Second World War, Höttl played an unsuccessful role in the Austrian right-wing party Wahlpartei der Unabhängigen; he was conceited (“I was Hitler’s Master Spy“) and also wrote books (The Secret Front, 1954 and under the pseudonym Walter Hagen The Paper Weapon, 1955).
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© 2000 Springer-Verlag Berlin Heidelberg
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Bauer, F.L. (2000). Encryption Steps: Polygraphic Substitution and Coding. In: Decrypted Secrets. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-04024-9_4
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DOI: https://doi.org/10.1007/978-3-662-04024-9_4
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-662-04026-3
Online ISBN: 978-3-662-04024-9
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