Cryptographie indéchiffrable

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Cryptographie indéchiffrable
AuthorÉmile Victor Théodore Myszkowski
LanguageFrench
GenreFactual
Publication date
1902

Cryptographie indéchiffrable (subtitle: basée sur de nouvelles combinaisons rationelles) is a French book on cryptography written by Émile Victor Théodore Myszkowski (a retired French colonel) and published in 1902.

His book described a cipher that the author had invented and claimed (incorrectly) was "undecipherable" (i.e. secure against unauthorised attempts to read it). It was based on a form of repeated-key transposition.

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