Elementary cryptanalysis
by Gaines, Helen Fouché
This edition had all images removed.
LoC No.:
39031782
Title:
Elementary cryptanalysis
Original Publication:
Boston: American Photographic Publishing Co., 1939.
Contents:
General information -- Concealment devices -- Transposition types -- Geometrical types: the Nihilist transposition -- Geometrical types: the turning grille -- Irregular types: columnar transposition -- General methods: multiple anagramming, etc. -- Substitution types -- Simple substitution: fundamentals -- The...